java - very large image manipulation and tiling

Question

I need a software or program in Java or a method for tiling very large images (bigger than 140MB). I have used ImageMagick and convert tools Photoshop and Corel Draw and Matlab (in Windows), but I have a problem with memory overload. ImageMagick is very slow and result is not desirable. I don't know how can I only load a small part of image to memory without loading the whole image from harddisk.

Answer 1

If you use native code, libraries such as libjeg give you scanline access to to images - you'd at most need to load 16 scanlines at a time.