Real time implementation of block truncation coding for picture data compression

This paper describes the implementation of absolute moment block truncation coding (AMBTC) in real time for the moving picture data compression. Using the AMBTC algorithm, we have realized and operated a system for an NTSC TV signal and obtained quite an excellent performance. All circuits are implemented in the wrapping method, and the highest processing clock rate is 10.7 MHz (3 fsc). The sampling rate is 5.35 MHz. The system implemented by hardwares excluding software manipulation, which contains five subblocks performs well to get the compressed data rate of 2.0 bits/pel. The quality of the processed picture is more or less degraded but not objectionable.