Friday, August 15, 2014

DWA compression in OpenEXR 2.2

OpenEXR 2.2 was just released, and it features a new lossy codec created by Karl Rasche of DreamWorks Animation. Simply called DWA, it applies techniques common in lossy image compression like the discrete cosine transform and Huffman coding, but it uses them to great effect. If you can accept a little loss in your HDR images, DWA can shrink them to a fraction of their lossless size.