A new image coding approach is proposed by controlling the quantization step via minimizing the perceptual distortions (in terms of image's contrast measurement). The proposed method is a rate-oriented contrast-based approach, which is in contrast to the conventional quality-oriented contrast-based image coding. The algorithm achieves a higher perceptual quality performance against several methods developed previously.
© 2010 Chinese Optics Letters
Weiyu Yu and Jing Tian, "Rate-oriented perceptual image coding using contrast-based quantization," Chin. Opt. Lett. 8, 381-383 (2010)