Image Processing

exif: Extract Thumbnails from Digital Photos

Extract the thumbnail image from an HP digital photo.

[FreeBSD] / ports / graphics / exif

Most digital cameras produce EXIF files, which are JPEG files with extra tags that contain information about the image. The EXIF library allows you to parse an EXIF file and read the data from those tags.

http://sourceforge.net/projects/libexif/

libgd - Boutelle Graphics - gcc command line

Command line for compiling a C program that uses the GD graphics library.

The GD library creates PNG, JPEG and GIF images, among other formats. GD is commonly used to generate charts, graphics, thumbnails, and most anything else, on the fly. While not restricted to use on the web, the most common applications of GD involve web site development.

Manual