mirror of
https://github.com/wpilibsuite/allwpilib
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822 lines
31 KiB
C++
822 lines
31 KiB
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) FIRST 2014. All Rights Reserved. */
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/* Open Source Software - may be modified and shared by FRC teams. The code */
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/* must be accompanied by the FIRST BSD license file in $(WIND_BASE)/WPILib. */
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/*----------------------------------------------------------------------------*/
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#include <stdlib.h>
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#include <stdarg.h>
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#include "Vision/BaeUtilities.h"
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#include "Vision/FrcError.h"
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#include "Vision/VisionAPI.h"
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int VisionAPI_debugFlag = 1;
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#define DPRINTF \
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if (VisionAPI_debugFlag) dprintf
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/** @file
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* Image Management functions
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*/
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/**
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* @brief Create an image object
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_COMPLEX,
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* IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL, IMAQ_IMAGE_RGB_U64
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* The border size is defaulted to 3 so that convolutional algorithms work at the
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* edges.
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* When you are finished with the created image, dispose of it by calling
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* frcDispose().
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* To get extended error information, call GetLastError().
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*
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* @param type Type of image to create
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* @return Image* On success, this function returns the created image. On
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* failure, it returns nullptr.
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*/
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Image* frcCreateImage(ImageType type) {
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return imaqCreateImage(type, DEFAULT_BORDER_SIZE);
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}
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/**
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* @brief Dispose of one object. Supports any object created on the heap.
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*
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* @param object object to dispose of
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcDispose(void* object) { return imaqDispose(object); }
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/**
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* @brief Dispose of a list of objects. Supports any object created on the heap.
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*
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* @param functionName The name of the function
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* @param ... A list of pointers to structures that need to be disposed of.
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* The last pointer in the list should always be set to nullptr.
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*
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcDispose(const char* functionName, ...) /* Variable argument list */
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{
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va_list disposalPtrList; /* Input argument list */
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void* disposalPtr; /* For iteration */
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int success, returnValue = 1;
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va_start(disposalPtrList, functionName); /* start of variable list */
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disposalPtr = va_arg(disposalPtrList, void*);
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while (disposalPtr != nullptr) {
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success = imaqDispose(disposalPtr);
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if (!success) {
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returnValue = 0;
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}
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disposalPtr = va_arg(disposalPtrList, void*);
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}
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va_end(disposalPtrList);
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return returnValue;
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}
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/**
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* @brief Copy an image object.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_RGB,
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* IMAQ_IMAGE_HSL.
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*
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* @param dest Copy of image. On failure, dest is nullptr. Must have already been
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* created using frcCreateImage().
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* When you are finished with the created image, dispose of it by calling
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* frcDispose().
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* @param source Image to copy
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*
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcCopyImage(Image* dest, const Image* source) {
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return imaqDuplicate(dest, source);
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}
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/**
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* @brief Crop image without changing the scale.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_RGB,
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* IMAQ_IMAGE_HSL.
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*
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* @param dest Modified image
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* @param source Image to crop
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* @param rect region to process, or IMAQ_NO_RECT
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*
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcCrop(Image* dest, const Image* source, Rect rect) {
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return imaqScale(dest, source, 1, 1, IMAQ_SCALE_LARGER, rect);
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}
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/**
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* @brief Scales the entire image larger or smaller.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_RGB,
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* IMAQ_IMAGE_HSL.
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*
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* @param dest Modified image
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* @param source Image to scale
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* @param xScale the horizontal reduction ratio
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* @param yScale the vertical reduction ratio
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* @param scaleMode IMAQ_SCALE_LARGER or IMAQ_SCALE_SMALLER
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*
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcScale(Image* dest, const Image* source, int xScale, int yScale,
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ScalingMode scaleMode) {
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Rect rect = IMAQ_NO_RECT;
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return imaqScale(dest, source, xScale, yScale, scaleMode, rect);
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}
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/**
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* @brief Creates image object from the information in a file. The file can be
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* in one of the following formats:
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* PNG, JPEG, JPEG2000, TIFF, AIPD, or BMP.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_COMPLEX,
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* IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL, IMAQ_IMAGE_RGB_U64.
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*
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* @param image Image read in
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* @param fileName File to read. Cannot be nullptr
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*
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcReadImage(Image* image, const char* fileName) {
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return imaqReadFile(image, fileName, nullptr, nullptr);
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}
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/**
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* @brief Write image to a file.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL, IMAQ_IMAGE_COMPLEX,
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* IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL, IMAQ_IMAGE_RGB_U64.
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*
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* The file type is determined by the extension, as follows:
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*
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* Extension File Type
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* aipd or .apd AIPD
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* .bmp BMP
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* .jpg or .jpeg JPEG
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* .jp2 JPEG2000
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* .png PNG
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* .tif or .tiff TIFF
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*
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*
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* The following are the supported image types for each file type:
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*
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* File Types Image Types
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* AIPD all image types
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* BMP, JPEG 8-bit, RGB
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* PNG, TIFF, JPEG2000 8-bit, 16-bit, RGB, RGBU64
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*
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* @param image Image to write
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* @param fileName File to read. Cannot be nullptr. The extension determines the
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* file format that is written.
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*
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcWriteImage(const Image* image, const char* fileName) {
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RGBValue* colorTable = nullptr;
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return imaqWriteFile(image, fileName, colorTable);
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}
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/* Measure Intensity functions */
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/**
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* @brief Measures the pixel intensities in a rectangle of an image.
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* Outputs intensity based statistics about an image such as Max, Min, Mean and
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* Std Dev of pixel value.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL.
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*
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* Parameter Discussion :
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* Relevant parameters of the HistogramReport include:
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* min, max, mean and stdDev
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* min/max —Setting both min and max to 0 causes the function to set
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* min to 0
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* and the max to 255 for 8-bit images and to the actual
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* minimum value and
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* maximum value of the image for all other image types.
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* max—Setting both min and max to 0 causes the function to set max
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* to 255
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* for 8-bit images and to the actual maximum value of the
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* image for
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* all other image types.
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*
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* @param image Image whose histogram the function calculates.
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* @param numClasses The number of classes into which the function separates the
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* pixels.
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* Determines the number of elements in the histogram array returned
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* @param min The minimum pixel value to consider for the histogram.
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* The function does not count pixels with values less than min.
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* @param max The maximum pixel value to consider for the histogram.
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* The function does not count pixels with values greater than max.
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* @param rect Region of interest in the image. If not included, the entire image
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* is used.
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* @return On success, this function returns a report describing the pixel value
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* classification.
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* When you are finished with the report, dispose of it by calling frcDispose().
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* On failure, this function returns nullptr. To get extended error information,
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* call GetLastError().
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*
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*/
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HistogramReport* frcHistogram(const Image* image, int numClasses, float min,
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float max) {
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Rect rect = IMAQ_NO_RECT;
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return frcHistogram(image, numClasses, min, max, rect);
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}
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HistogramReport* frcHistogram(const Image* image, int numClasses, float min,
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float max, Rect rect) {
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int success;
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int fillValue = 1;
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/* create the region of interest */
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ROI* pRoi = imaqCreateROI();
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success = imaqAddRectContour(pRoi, rect);
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if (!success) {
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GetLastVisionError();
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return nullptr;
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}
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/* make a mask from the ROI */
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Image* pMask = frcCreateImage(IMAQ_IMAGE_U8);
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success = imaqROIToMask(pMask, pRoi, fillValue, nullptr, nullptr);
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if (!success) {
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GetLastVisionError();
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frcDispose(__FUNCTION__, pRoi, nullptr);
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return nullptr;
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}
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/* get a histogram report */
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HistogramReport* pHr = nullptr;
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pHr = imaqHistogram(image, numClasses, min, max, pMask);
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/* clean up */
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frcDispose(__FUNCTION__, pRoi, pMask, nullptr);
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return pHr;
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}
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/**
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* @brief Calculates the histogram, or pixel distribution, of a color image.
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* Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL.
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*
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* @param image Image whose histogram the function calculates.
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* @param numClasses The number of classes into which the function separates the
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* pixels.
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* Determines the number of elements in the histogram array returned
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* @param mode The color space in which to perform the histogram. Possible values
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* include IMAQ_RGB and IMAQ_HSL.
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* @param mask An optional mask image. This image must be an IMAQ_IMAGE_U8 image.
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* The function calculates the histogram using only those pixels in the image
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* whose
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* corresponding pixels in the mask are non-zero. Set this parameter to nullptr to
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* calculate
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* the histogram of the entire image, or use the simplified call.
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*
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* @return On success, this function returns a report describing the
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* classification
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* of each plane in a HistogramReport.
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* When you are finished with the report, dispose of it by calling frcDispose().
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* On failure, this function returns nullptr.
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* To get extended error information, call imaqGetLastError().
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*/
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ColorHistogramReport* frcColorHistogram(const Image* image, int numClasses,
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ColorMode mode) {
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return frcColorHistogram(image, numClasses, mode, nullptr);
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}
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ColorHistogramReport* frcColorHistogram(const Image* image, int numClasses,
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ColorMode mode, Image* mask) {
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return imaqColorHistogram2((Image*)image, numClasses, mode, nullptr, mask);
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}
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/**
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* @brief Measures the pixel intensities in a rectangle of an image.
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* Outputs intensity based statistics about an image such as Max, Min, Mean and
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* Std Dev of pixel value.
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* Supports IMAQ_IMAGE_U8 (grayscale) IMAQ_IMAGE_RGB (color) IMAQ_IMAGE_HSL
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* (color-HSL).
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*
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* @param image The image whose pixel value the function queries
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* @param pixel The coordinates of the pixel that the function queries
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* @param value On return, the value of the specified image pixel. This parameter
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* cannot be nullptr.
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* This data structure contains either grayscale, RGB, HSL, Complex or
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* RGBU64Value depending on the type of image.
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcGetPixelValue(const Image* image, Point pixel, PixelValue* value) {
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return imaqGetPixel(image, pixel, value);
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}
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/* Particle Analysis functions */
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/**
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* @brief Filters particles out of an image based on their measurements.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL.
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*
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* @param dest The destination image. If dest is used, it must be the same size
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* as the Source image. It will contain only the filtered particles.
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* @param source The image containing the particles to filter.
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* @param criteria An array of criteria to apply to the particles in the source
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* image. This array cannot be nullptr.
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* See the NIVisionCVI.chm help file for definitions of criteria.
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* @param criteriaCount The number of elements in the criteria array.
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* @param options Binary filter options, including rejectMatches, rejectBorder,
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* and connectivity8.
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* @param rect Area of image to filter. If omitted, the default is entire image.
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* @param numParticles On return, the number of particles left in the image
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcParticleFilter(Image* dest, Image* source,
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const ParticleFilterCriteria2* criteria,
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int criteriaCount, const ParticleFilterOptions* options,
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int* numParticles) {
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Rect rect = IMAQ_NO_RECT;
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return frcParticleFilter(dest, source, criteria, criteriaCount, options, rect,
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numParticles);
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}
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int frcParticleFilter(Image* dest, Image* source,
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const ParticleFilterCriteria2* criteria,
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int criteriaCount, const ParticleFilterOptions* options,
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Rect rect, int* numParticles) {
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ROI* roi = imaqCreateROI();
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imaqAddRectContour(roi, rect);
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return imaqParticleFilter3(dest, source, criteria, criteriaCount, options,
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roi, numParticles);
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}
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/**
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* @brief Performs morphological transformations on binary images.
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* Supports IMAQ_IMAGE_U8.
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*
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* @param dest The destination image. The border size of the destination image is
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* not important.
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* @param source The image on which the function performs the morphological
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* operations. The calculation
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* modifies the border of the source image. The border must be at least half as
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* large as the larger
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* dimension of the structuring element. The connected source image for a
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* morphological transformation
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* must have been created with a border capable of supporting the size of the
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* structuring element.
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* A 3 by 3 structuring element requires a minimal border of 1, a 5 by 5
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* structuring element requires a minimal border of 2, and so on.
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* @param method The morphological transform to apply.
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* @param structuringElement The structuring element used in the operation. Omit
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* this parameter if you do not want a custom structuring element.
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcMorphology(Image* dest, Image* source, MorphologyMethod method) {
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return imaqMorphology(dest, source, method, nullptr);
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}
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int frcMorphology(Image* dest, Image* source, MorphologyMethod method,
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const StructuringElement* structuringElement) {
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return imaqMorphology(dest, source, method, structuringElement);
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}
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/**
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* @brief Eliminates particles that touch the border of the image.
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* Supports IMAQ_IMAGE_U8.
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*
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* @param dest The destination image.
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* @param source The source image. If the image has a border, the function sets
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* all border pixel values to 0.
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* @param connectivity8 specifies the type of connectivity used by the algorithm
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* for particle detection.
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* The connectivity mode directly determines whether an adjacent pixel belongs to
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* the same particle or a
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* different particle. Set to TRUE to use connectivity-8 to determine whether
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* particles are touching
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* Set to FALSE to use connectivity-4 to determine whether particles are
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* touching.
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* The default setting for the simplified call is TRUE
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcRejectBorder(Image* dest, Image* source) {
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return imaqRejectBorder(dest, source, TRUE);
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}
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int frcRejectBorder(Image* dest, Image* source, int connectivity8) {
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return imaqRejectBorder(dest, source, connectivity8);
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}
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/**
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* @brief Counts the number of particles in a binary image.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL.
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* @param image binary (thresholded) image
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* @param numParticles On return, the number of particles.
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcCountParticles(Image* image, int* numParticles) {
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return imaqCountParticles(image, 1, numParticles);
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}
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/**
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* @brief Conduct measurements for a single particle in an images.
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* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16, IMAQ_IMAGE_SGL.
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*
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* @param image image with the particle to analyze. This function modifies the
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* source image.
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* If you need the original image, create a copy of the image using frcCopy()
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* before using this function.
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* @param particleNumber The number of the particle to get information on
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* @param par on return, a particle analysis report containing information about
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* the particle. This structure must be created by the caller.
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* @return On success: 1. On failure: 0. To get extended error information, call
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* GetLastError().
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*/
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int frcParticleAnalysis(Image* image, int particleNumber,
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ParticleAnalysisReport* par) {
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int success = 0;
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/* image information */
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int height, width;
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if (!imaqGetImageSize(image, &width, &height)) {
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return success;
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}
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par->imageWidth = width;
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par->imageHeight = height;
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par->particleIndex = particleNumber;
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/* center of mass point of the largest particle */
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double returnDouble;
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success = imaqMeasureParticle(image, particleNumber, 0,
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IMAQ_MT_CENTER_OF_MASS_X, &returnDouble);
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if (!success) {
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return success;
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}
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par->center_mass_x = (int)returnDouble; // pixel
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success = imaqMeasureParticle(image, particleNumber, 0,
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IMAQ_MT_CENTER_OF_MASS_Y, &returnDouble);
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if (!success) {
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return success;
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}
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par->center_mass_y = (int)returnDouble; // pixel
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/* particle size statistics */
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success = imaqMeasureParticle(image, particleNumber, 0, IMAQ_MT_AREA,
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&returnDouble);
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if (!success) {
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return success;
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}
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par->particleArea = returnDouble;
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|
|
success = imaqMeasureParticle(image, particleNumber, 0,
|
|
IMAQ_MT_BOUNDING_RECT_TOP, &returnDouble);
|
|
if (!success) {
|
|
return success;
|
|
}
|
|
par->boundingRect.top = (int)returnDouble;
|
|
|
|
success = imaqMeasureParticle(image, particleNumber, 0,
|
|
IMAQ_MT_BOUNDING_RECT_LEFT, &returnDouble);
|
|
if (!success) {
|
|
return success;
|
|
}
|
|
par->boundingRect.left = (int)returnDouble;
|
|
|
|
success = imaqMeasureParticle(image, particleNumber, 0,
|
|
IMAQ_MT_BOUNDING_RECT_HEIGHT, &returnDouble);
|
|
if (!success) {
|
|
return success;
|
|
}
|
|
par->boundingRect.height = (int)returnDouble;
|
|
|
|
success = imaqMeasureParticle(image, particleNumber, 0,
|
|
IMAQ_MT_BOUNDING_RECT_WIDTH, &returnDouble);
|
|
if (!success) {
|
|
return success;
|
|
}
|
|
par->boundingRect.width = (int)returnDouble;
|
|
|
|
/* particle quality statistics */
|
|
success = imaqMeasureParticle(image, particleNumber, 0,
|
|
IMAQ_MT_AREA_BY_IMAGE_AREA, &returnDouble);
|
|
if (!success) {
|
|
return success;
|
|
}
|
|
par->particleToImagePercent = returnDouble;
|
|
|
|
success = imaqMeasureParticle(image, particleNumber, 0,
|
|
IMAQ_MT_AREA_BY_PARTICLE_AND_HOLES_AREA,
|
|
&returnDouble);
|
|
if (!success) {
|
|
return success;
|
|
}
|
|
par->particleQuality = returnDouble;
|
|
|
|
/* normalized position (-1 to 1) */
|
|
par->center_mass_x_normalized = RangeToNormalized(par->center_mass_x, width);
|
|
par->center_mass_y_normalized = RangeToNormalized(par->center_mass_y, height);
|
|
|
|
return success;
|
|
}
|
|
|
|
/* Image Enhancement functions */
|
|
|
|
/**
|
|
* @brief Improves contrast on a grayscale image.
|
|
* Supports IMAQ_IMAGE_U8, IMAQ_IMAGE_I16.
|
|
* @param dest The destination image.
|
|
* @param source The image to equalize
|
|
* @param min the smallest value used for processing. After processing, all pixel
|
|
* values that are less than or equal to the Minimum in the original image are set
|
|
* to 0 for an 8-bit image. In 16-bit and floating-point images, these pixel
|
|
* values are set to the smallest pixel value found in the original image.
|
|
* @param max the largest value used for processing. After processing, all pixel
|
|
* values that are greater than or equal to the Maximum in the original image are
|
|
* set to 255 for an 8-bit image. In 16-bit and floating-point images, these pixel
|
|
* values are set to the largest pixel value found in the original image.
|
|
* @param mask an 8-bit image that specifies the region of the small image that
|
|
* will be copied. Only those pixels in the Image Src (Small) image that
|
|
* correspond to an equivalent non-zero pixel in the mask image are copied. All
|
|
* other pixels keep their original values. The entire image is processed if Image
|
|
* Mask is nullptr or this parameter is omitted.
|
|
* @return On success: 1. On failure: 0. To get extended error information, call
|
|
* GetLastError().
|
|
*
|
|
* option defaults:
|
|
* searchRect = IMAQ_NO_RECT
|
|
* minMatchScore = DEFAULT_MINMAX_SCORE (800)
|
|
*/
|
|
int frcEqualize(Image* dest, const Image* source, float min, float max) {
|
|
return frcEqualize(dest, source, min, max, nullptr);
|
|
}
|
|
|
|
int frcEqualize(Image* dest, const Image* source, float min, float max,
|
|
const Image* mask) {
|
|
return imaqEqualize(dest, source, min, max, mask);
|
|
}
|
|
|
|
/**
|
|
* @brief Improves contrast on a color image.
|
|
* Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL
|
|
*
|
|
* option defaults: colorEqualization = TRUE to equalize all three planes of the
|
|
* image
|
|
* @return On success: 1. On failure: 0. To get extended error information, call
|
|
* GetLastError().
|
|
* @param dest The destination image.
|
|
* @param source The image to equalize
|
|
* @param colorEqualization Set this parameter to TRUE to equalize all three
|
|
* planes of the image (the default). Set this parameter to FALSE to equalize only
|
|
* the luminance plane.
|
|
*/
|
|
int frcColorEqualize(Image* dest, const Image* source) {
|
|
return imaqColorEqualize(dest, source, TRUE);
|
|
}
|
|
|
|
int frcColorEqualize(Image* dest, const Image* source, int colorEqualization) {
|
|
return imaqColorEqualize(dest, source, TRUE);
|
|
}
|
|
|
|
/* Image Conversion functions */
|
|
|
|
/**
|
|
* @brief Automatically thresholds a grayscale image into a binary image for
|
|
* Particle Analysis based on a smart threshold.
|
|
* Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_I16
|
|
* @param dest The destination image.
|
|
* @param source The image to threshold
|
|
* @param windowWidth The width of the rectangular window around the pixel on
|
|
* which the function
|
|
* performs the local threshold. This number must be at least 3 and cannot be
|
|
* larger than the width of source
|
|
* @param windowHeight The height of the rectangular window around the pixel on
|
|
* which the function
|
|
* performs the local threshold. This number must be at least 3 and cannot be
|
|
* larger than the height of source
|
|
* @param method Specifies the local thresholding method the function uses. Value
|
|
* can be IMAQ_NIBLACK
|
|
* (which computes thresholds for each pixel based on its local statistics using
|
|
* the Niblack local thresholding
|
|
* algorithm.), or IMAQ_BACKGROUND_CORRECTION (which does background correction
|
|
* first to eliminate non-uniform
|
|
* lighting effects, then performs thresholding using the Otsu thresholding
|
|
* algorithm)
|
|
* @param deviationWeight Specifies the k constant used in the Niblack local
|
|
* thresholding algorithm, which
|
|
* determines the weight applied to the variance calculation. Valid k constants
|
|
* range from 0 to 1. Setting
|
|
* this value to 0 will increase the performance of the function because the
|
|
* function will not calculate the
|
|
* variance for any of the pixels. The function ignores this value if method is
|
|
* not set to IMAQ_NIBLACK
|
|
* @param type Specifies the type of objects for which you want to look. Values
|
|
* can be IMAQ_BRIGHT_OBJECTS
|
|
* or IMAQ_DARK_OBJECTS.
|
|
* @param replaceValue Specifies the replacement value the function uses for the
|
|
* pixels of the kept objects
|
|
* in the destination image.
|
|
* @return On success: 1. On failure: 0. To get extended error information, call
|
|
* GetLastError().
|
|
*/
|
|
int frcSmartThreshold(Image* dest, const Image* source,
|
|
unsigned int windowWidth, unsigned int windowHeight,
|
|
LocalThresholdMethod method, double deviationWeight,
|
|
ObjectType type) {
|
|
float replaceValue = 1.0;
|
|
return imaqLocalThreshold(dest, source, windowWidth, windowHeight, method,
|
|
deviationWeight, type, replaceValue);
|
|
}
|
|
|
|
int frcSmartThreshold(Image* dest, const Image* source,
|
|
unsigned int windowWidth, unsigned int windowHeight,
|
|
LocalThresholdMethod method, double deviationWeight,
|
|
ObjectType type, float replaceValue) {
|
|
return imaqLocalThreshold(dest, source, windowWidth, windowHeight, method,
|
|
deviationWeight, type, replaceValue);
|
|
}
|
|
|
|
/**
|
|
* @brief Converts a grayscale image to a binary image for Particle Analysis
|
|
* based on a fixed threshold.
|
|
* The function sets pixels values outside of the given range to 0. The function
|
|
* sets pixel values
|
|
* within the range to a given value or leaves the values unchanged.
|
|
* Use the simplified call to leave pixel values unchanged.
|
|
* Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_I16.
|
|
*
|
|
* @param dest The destination image.
|
|
* @param source The image to threshold
|
|
* @param rangeMin The lower boundary of the range of pixel values to keep
|
|
* @param rangeMax The upper boundary of the range of pixel values to keep.
|
|
*
|
|
* @return int - error code: 0 = error. To get extended error information, call
|
|
* GetLastError().
|
|
*/
|
|
int frcSimpleThreshold(Image* dest, const Image* source, float rangeMin,
|
|
float rangeMax) {
|
|
int newValue = 255;
|
|
return frcSimpleThreshold(dest, source, rangeMin, rangeMax, newValue);
|
|
}
|
|
|
|
/**
|
|
* @brief Converts a grayscale image to a binary image for Particle Analysis
|
|
* based on a fixed threshold.
|
|
* The function sets pixels values outside of the given range to 0. The function
|
|
* sets
|
|
* pixel values within the range to the given value.
|
|
* Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_I16.
|
|
*
|
|
* @param dest The destination image.
|
|
* @param source The image to threshold
|
|
* @param rangeMin The lower boundary of the range of pixel values to keep
|
|
* @param rangeMax The upper boundary of the range of pixel values to keep.
|
|
* @param newValue The replacement value for pixels within the range. Use the
|
|
* simplified call to leave the pixel values unchanged
|
|
*
|
|
* @return int - error code: 0 = error. To get extended error information, call
|
|
* GetLastError().
|
|
*/
|
|
int frcSimpleThreshold(Image* dest, const Image* source, float rangeMin,
|
|
float rangeMax, float newValue) {
|
|
int useNewValue = TRUE;
|
|
return imaqThreshold(dest, source, rangeMin, rangeMax, useNewValue, newValue);
|
|
}
|
|
|
|
/**
|
|
* @brief Applies a threshold to the Red, Green, and Blue values of a RGB image
|
|
* or the Hue,
|
|
* Saturation, Luminance values for a HSL image.
|
|
* Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL.
|
|
* This simpler version filters based on a hue range in the HSL mode.
|
|
*
|
|
* @param dest The destination image. This must be a IMAQ_IMAGE_U8 image.
|
|
* @param source The image to threshold
|
|
* @param mode The color space to perform the threshold in. valid values are:
|
|
* IMAQ_RGB, IMAQ_HSL.
|
|
* @param plane1Range The selection range for the first plane of the image. Set
|
|
* this parameter to nullptr to use a selection range from 0 to 255.
|
|
* @param plane2Range The selection range for the second plane of the image. Set
|
|
* this parameter to nullptr to use a selection range from 0 to 255.
|
|
* @param plane3Range The selection range for the third plane of the image. Set
|
|
* this parameter to nullptr to use a selection range from 0 to 255.
|
|
*
|
|
* @return On success: 1. On failure: 0. To get extended error information, call
|
|
* GetLastError().
|
|
* */
|
|
int frcColorThreshold(Image* dest, const Image* source, ColorMode mode,
|
|
const Range* plane1Range, const Range* plane2Range,
|
|
const Range* plane3Range) {
|
|
int replaceValue = 1;
|
|
return imaqColorThreshold(dest, source, replaceValue, mode, plane1Range,
|
|
plane2Range, plane3Range);
|
|
}
|
|
|
|
/**
|
|
* @brief Applies a threshold to the Red, Green, and Blue values of a RGB image
|
|
* or the Hue,
|
|
* Saturation, Luminance values for a HSL image.
|
|
* Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL.
|
|
* The simpler version filters based on a hue range in the HSL mode.
|
|
*
|
|
* @param dest The destination image. This must be a IMAQ_IMAGE_U8 image.
|
|
* @param source The image to threshold
|
|
* @param replaceValue Value to assign to selected pixels. Defaults to 1 if
|
|
* simplified call is used.
|
|
* @param mode The color space to perform the threshold in. valid values are:
|
|
* IMAQ_RGB, IMAQ_HSL.
|
|
* @param plane1Range The selection range for the first plane of the image. Set
|
|
* this parameter to nullptr to use a selection range from 0 to 255.
|
|
* @param plane2Range The selection range for the second plane of the image. Set
|
|
* this parameter to nullptr to use a selection range from 0 to 255.
|
|
* @param plane3Range The selection range for the third plane of the image. Set
|
|
* this parameter to nullptr to use a selection range from 0 to 255.
|
|
*
|
|
* @return On success: 1. On failure: 0. To get extended error information, call
|
|
* GetLastError().
|
|
*/
|
|
int frcColorThreshold(Image* dest, const Image* source, int replaceValue,
|
|
ColorMode mode, const Range* plane1Range,
|
|
const Range* plane2Range, const Range* plane3Range) {
|
|
return imaqColorThreshold(dest, source, replaceValue, mode, plane1Range,
|
|
plane2Range, plane3Range);
|
|
}
|
|
|
|
/**
|
|
* @brief A simpler version of ColorThreshold that thresholds hue range in the
|
|
* HSL mode. Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL.
|
|
* @param dest The destination image.
|
|
* @param source The image to threshold
|
|
* @param hueRange The selection range for the hue (color).
|
|
* @param minSaturation The minimum saturation value (1-255). If not used,
|
|
* DEFAULT_SATURATION_THRESHOLD is the default.
|
|
*
|
|
* @return On success: 1. On failure: 0. To get extended error information, call
|
|
* GetLastError().
|
|
*/
|
|
int frcHueThreshold(Image* dest, const Image* source, const Range* hueRange) {
|
|
return frcHueThreshold(dest, source, hueRange, DEFAULT_SATURATION_THRESHOLD);
|
|
}
|
|
|
|
int frcHueThreshold(Image* dest, const Image* source, const Range* hueRange,
|
|
int minSaturation) {
|
|
// assume HSL mode
|
|
ColorMode mode = IMAQ_HSL;
|
|
// Set saturation 100 - 255
|
|
Range satRange;
|
|
satRange.minValue = minSaturation;
|
|
satRange.maxValue = 255;
|
|
// Set luminance 100 - 255
|
|
Range lumRange;
|
|
lumRange.minValue = 100;
|
|
lumRange.maxValue = 255;
|
|
// Replace pixels with 1 if pass threshold filter
|
|
int replaceValue = 1;
|
|
return imaqColorThreshold(dest, source, replaceValue, mode, hueRange,
|
|
&satRange, &lumRange);
|
|
}
|
|
|
|
/**
|
|
* @brief Extracts the Red, Green, Blue, or Hue, Saturation or Luminance
|
|
* information from a color image.
|
|
* Supports IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL, IMAQ_IMAGE_RGB_U64.
|
|
*
|
|
* @param image The source image that the function extracts the planes from.
|
|
* @param mode The color space that the function extracts the planes from. Valid
|
|
* values are IMAQ_RGB, IMAQ_HSL, IMAQ_HSV, IMAQ_HSI.
|
|
* @param plane1 On return, the first extracted plane. Set this parameter to nullptr
|
|
* if you do not need this information. RGB-Red, HSL/HSV/HSI-Hue.
|
|
* @param plane2 On return, the second extracted plane. Set this parameter to
|
|
* nullptr if you do not need this information. RGB-Green, HSL/HSV/HSI-Saturation.
|
|
* @param plane3 On return, the third extracted plane. Set this parameter to nullptr
|
|
* if you do not need this information. RGB-Blue, HSL-Luminance, HSV-Value,
|
|
* HSI-Intensity.
|
|
*
|
|
* @return error code: 0 = error. To get extended error information, call
|
|
* GetLastError().
|
|
*/
|
|
int frcExtractColorPlanes(const Image* image, ColorMode mode, Image* plane1,
|
|
Image* plane2, Image* plane3) {
|
|
return imaqExtractColorPlanes(image, mode, plane1, plane2, plane3);
|
|
}
|
|
|
|
/**
|
|
* @brief Extracts the Hue information from a color image. Supports
|
|
* IMAQ_IMAGE_RGB, IMAQ_IMAGE_HSL, IMAQ_IMAGE_RGB_U64
|
|
*
|
|
* @param image The source image that the function extracts the plane from.
|
|
* @param huePlane On return, the extracted hue plane.
|
|
* @param minSaturation the minimum saturation level required 0-255 (try 50)
|
|
*
|
|
* @return On success: 1. On failure: 0. To get extended error information, call
|
|
* GetLastError().
|
|
*/
|
|
int frcExtractHuePlane(const Image* image, Image* huePlane) {
|
|
return frcExtractHuePlane(image, huePlane, DEFAULT_SATURATION_THRESHOLD);
|
|
}
|
|
|
|
int frcExtractHuePlane(const Image* image, Image* huePlane, int minSaturation) {
|
|
return frcExtractColorPlanes(image, IMAQ_HSL, huePlane, nullptr, nullptr);
|
|
}
|