Abstract
This paper compares two second-generation image coding methods. The first method is segmented image coding (SIC) which segments images into regions of stationary image intensity and approximates the gray values in each region by a bi-variate polynomial. The second method is warped image coding (WIC) which represents images in terms of image- dependent base functions, but which may also be viewed as an adaptive subsampling method. The paper explains the most important features of both techniques and compares them experimentally at a bit rate of 0.3 bit per pixel on the 'peppers' image. The results show that WIC produces the best subjective image quality. On the other hand, WIC is computationally much more demanding than the particular SIC method considered in this paper. Both SIC and WIC produce better images than JPEG at the considered rate.
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