A New Hybrid DWT-SVD Image-Coding System for Color Images Humberto Ochoaa,b, K.R. Raoa

Abstract: In this paper, we propose the HDWTSVD system to encode color images. Before encoding, the color components (RGB) are transformed into YCbCr. Cb and Cr components are downsampled by a factor of two, both horizontally and vertically, before sending them through the encoder. A criterion based on the average standard deviation of 8x8 subblocks of the Y component is used to choose DWT or SVD for all the components. Standard test images are compressed based on the proposed algorithm