A Study on Lossless Adaptive Image Compression using Wavelet Transform

Abstract

Recently, image compression techniques using discrete wavelet transform are hot topics. Moreover, many adaptive coding methods that changes conpression method depending on local property of the image are represented. In medical field, for example, lossless image compression methods are highly required. The case that a whole high resolution image doesn't need at a time, and getting high resolution spot image after looking low resolution image is occured frequently. We are developing image compression method that is lossless, and is able to represent progressively for getting higher resolution spot image later. In this report, as one stage of the development, suitable color space for adaptive coding, and influence of blocking image are reported.