The zero level of the image is recorded as Dark Field Image. When the value of the pixel in the input image is less than that in Dark Field Image, its value in the result image is set to 0. It is useful when the high camera gain is used. When Dark Field Image is trained, Flat Field Image should be retrained.
Train Dark Field Image with the following procedures:
After when Dark Field Image has been successfully set, the recorded Dark Field Image displays in the image display and its histogram displays in a graph and a table.