After inserting an image in the workspace. I select the image and then select Adjust Image. I picked Stucki, line interval of 0.1 and increase brightness 10%. The image on the right shows the changes I want. After clicking OK and then selecting Preview, I’m shown a Threshold image. It was working just fine the other day. I haven’t changed any settings or anything. What’s going on?
Original image inserted:
Image adjust screen:
Preview: