- Extension: art
- Company: AOL
- Samples: http://samples.mplayerhq.hu/image-samples/ART/
- Wikipedia page: http://en.wikipedia.org/wiki/ART_image_file_format (has some interesting links)
ART is an image format used on the America OnLine (AOL) service. The file format originated with a company named Johnson-Grace and was later acquired by AOL. Allegedly, the format is able to employ a number of different compression techniques depending on the characteristics of the image data.
Integers seem to be in little-endian format.
0x00 ( +2) ASCII characters "JG", likely for Johnson-Grace ... 0x0D ( +2) width 0x0F ( +2) height
Patent 5,682,152 Data compression using adaptive bit allocation and hybrid lossless entropy coding
Patent 5,822,456 Optimal spline interpolation for image compression
Patent 5,892,847 Method and apparatus for compressing images