A Two Layer Hybrid Image Coder

Abstract

This paper presents a new idea of a two layer hybrid image coder based on visual pattern image coding of original image and residual image by means of the wavelet transform. At first contours are extracted from the original image. As a contour extractor a VP1C coder is used. In the second, the residual image is computed and coded by the wavelet transform. At the decoder side the sum of contours and residual (texture) image parts is made to obtain the reconstructed image. Some results of coding simulation on picture Lena (256x256x8) are presented. The proposed coding technique is well suitable for image coding and progressive image transmission.