A. Heiman

TL;DR: An image coding method for low bit rates based on alternate use of the discrete cosine transform and the discrete sine transform on image blocks achieves the removal of redundancies in the correlation between neighboring blocks as well as the preservation of continuity across the block boundaries.

TL;DR: Methods are presented for enhancing one-dimensional variable-length differential pulse-code modulation (VLDPCM) images corrupted by transmission errors, and two methods are described, which achieve significant improvements which are demonstrated by the simulation results.

TL;DR: A discrete cosine transform image coding scheme based on adaptive block size that adaptively optimizes the block sizes according to some local activity indexes of the image scenes by applying the technique from graph theory.

TL;DR: A discrete cosine transform image-coding scheme based on adaptive block size that reduces interblock correlation between coefficients and increases the energy compaction in the transform domain is proposed and demonstrated.