Region-adaptive JPEG encoding scheme for medical images
Hyo-Joon Kim, Jun S. Song, Seung J. Kim, Jong Hyo Kim, ChoongWoong Lee · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1998
This paper presents a region adaptive encoding scheme with JPEG decoder compatibility. This scheme adequately changes the Lagrange multiplier in R-D cost function for each block according to the segmentation information so that the important region for diagnosis can be coded with less distortion. The results show that the proposed scheme not only outperforms original JPEG but also outperforms R-D optimal thresholding JPEG in important regions with respect to image fidelity.