Library for Reading and Writing Images
http://www.openimageio.org/

OpenImageIO is a library for reading and writing images, and a bunch of related
classes, utilities, and applications. There is a particular emphasis on formats
and functionality used in professional, large-scale animation and visual
effects work for film. OpenImageIO is used extensively in animation and VFX
studios all over the world, and is also incorporated into several commercial
products.