Unterer Schwellwert

The blob tool binarizes the grayscale input image into a black and white image. The Dual Threshold Mode allows two threshold settings, the Upper Threshold and Lower Threshold. All pixels in the image with a grayscale value greater than the Lower Threshold and less than the Upper Threshold are set to white, with a grayscale value of 255. All pixels in the image with a grayscale value less than the Lower Threshold and greater than the Upper Threshold are set to black, with a grayscale value of zero.

Adjust the threshold values so that the workpiece and its background are opposite colors. If the background is light, adjust the threshold so that the background is white and the workpiece is black. If the background is dark, adjust the threshold so that the background is black and the workpiece is white.