Fast Cross-Platform C/C++ Image Processing Libraries

Question

What are some cross platform and high performance image libraries for image processing (resizing and finding the color/hue histograms). No gui needed. This is for C/C++.

Answer 1

I help maintain libvips, a free, cross-platform C/C++ scientific image-processing library. It is fast and works well on very large images.

I did a very simple benchmark: load a 5,000 x 5,000 pixel RGB tif, crop 100 pixels off every edge, shrink 10%, sharpen, and save again. On this trivial test at least, vips is more than twice as fast as anything else I've tried.