P. G. Howard and J. S. Vitter. “Fast and Efficient Lossless Image Compression,” Proceedings of the 1993 IEEE Data Compression Conference (DCC ‘93), Snowbird, UT, April 1993. The abstract describes this as a lossless compression algorithm that provides results as good as JPEG in lossless mode with five times the speed.

http://www.cs.duke.edu/~jsv/Papers/catalog/node69.html