Laplacing, sobel, Kirsh, Skelotizing, pruning, histograme equalization, histogram smoothing etc.
Image Editing
Cut/Copy/Paste, selected copy by free hand AOL. Resize, Crop/Duplicate/restore, conversion to other format like BMP,JPG,TIF, Annotation like, free hand drawing, straight line, square, Circle, arrow, Text, highlighter etc, pointer, eraser.