Novel image compression algorithm by using LOG-EXP transform

Sheng-Chieh Huang*, Liang Gee Chen, Hao Chieh Chang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

14 Scopus citations


Based on the logarithmic and exponential transform, an efficient Log-Exp still image compression system is proposed. The Log-Exp compression is designed for the high quality still image, especially for the PSNR above 36. At the similar image quality (Log-Exp PSNR = 41.52 and JPEG PSNR = 41.23), the Log-Exp compression can get the higher compression ratio than JPEG by 1.84 times for the benchmark image lena. Besides, the Log-Exp compression is computing in pixel-by-pixel without the block artifacts. In comparison with the JPEG compression result (bpp = 0.99, PSNR = 26.9), the Log-Exp compression uses less bpp (bpp = 0.87) to get higher image quality (PSNR = 36.38) for the benchmark image baboon.

Original languageEnglish
JournalProceedings - IEEE International Symposium on Circuits and Systems
StatePublished - 1 Jan 1999
EventProceedings of the 1999 IEEE International Symposium on Circuits and Systems, ISCAS '99 - Orlando, FL, USA
Duration: 30 May 19992 Jun 1999


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