diff --git a/photon-core/src/main/java/org/photonvision/vision/pipe/impl/DrawCalibrationPipe.java b/photon-core/src/main/java/org/photonvision/vision/pipe/impl/DrawCalibrationPipe.java
index af3f5ffeb..cf0b04f0d 100644
--- a/photon-core/src/main/java/org/photonvision/vision/pipe/impl/DrawCalibrationPipe.java
+++ b/photon-core/src/main/java/org/photonvision/vision/pipe/impl/DrawCalibrationPipe.java
@@ -56,6 +56,11 @@ public class DrawCalibrationPipe
         int i = 0;
         for (var target : in.getRight()) {
             for (var c : target.getTargetCorners()) {
+                if (c.x < 0 || c.y < 0) {
+                    // Skip if the corner is less than zero
+                    continue;
+                }
+
                 c =
                         new Point(
                                 c.x / params.divisor.value.doubleValue(), c.y / params.divisor.value.doubleValue());
diff --git a/photon-core/src/main/java/org/photonvision/vision/pipe/impl/FindBoardCornersPipe.java b/photon-core/src/main/java/org/photonvision/vision/pipe/impl/FindBoardCornersPipe.java
index 43e538f7c..a85c57a3e 100644
--- a/photon-core/src/main/java/org/photonvision/vision/pipe/impl/FindBoardCornersPipe.java
+++ b/photon-core/src/main/java/org/photonvision/vision/pipe/impl/FindBoardCornersPipe.java
@@ -116,6 +116,11 @@ public class FindBoardCornersPipe
                             Objdetect.getPredefinedDictionary(params.tagFamily.getValue()));
             board.setLegacyPattern(params.useOldPattern);
             detector = new CharucoDetector(board);
+            detector.getDetectorParameters().set_adaptiveThreshConstant(10);
+            detector.getDetectorParameters().set_adaptiveThreshWinSizeMin(11);
+            detector.getDetectorParameters().set_adaptiveThreshWinSizeStep(40);
+            detector.getDetectorParameters().set_adaptiveThreshWinSizeMax(91);
+
         } else {
             logger.error("Can't create pattern for unknown board type " + params.type);
         }