Is there a software (Windows) that can handle cropping of an (one) image file into multiple files ? I mean for example we scan an A4 paper and I want to specify some lines and the program splits my doc to multiple images.
You can use ImageMagick:
convert -crop WxH+X+Y, with:
convert paged.gif -crop 32x32+16+16 crop_page.gif.
Yo can use GIMP.
Open the image, position image guides, either manually by clicking on the rulers at the windows borders and dragging then to image, or by percent/pixel position in
Image->guides, then export the sub-images as defined by the guides in
Image slices are named according to their position in the image.
If you need to automate the placement of the guides for cutting, it can be done in either the Python or Script-fu consoles that come with the program, by calling
gimp-image-add-hguide. (ask in a comment if you need further explanations on how to do this)