BIRT - Batch Image Resizing Thing

BIRT, the Batch Image Resizing Thing, is a simple application that allows a large number of images to be resized in one go. Obviously this is possible by scripting ImageMagick but it's usually somewhat easier with a GUI. It was created in order to learn how to develop using the Qt library, and to facilitate the maintenance of an online photo album where each hi-res photo needs a low-res copy and a thumbnail.