Application of pseudorandom noise to DPCM
Abstract
The conventional DPCM compression algorithm has been substantially improved by the substitution of a tapered, noisy quantizer for the usual tapered quantizer. This markedly reduces the visibility of defects caused by granular noise and leak. The quantizer characteristic can then be modified to achieve less slope overload, thus significantly improving image quality.
- Publication:
-
IEEE Transactions on Communications
- Pub Date:
- December 1981
- Bibcode:
- 1981ITCom..29.1763T
- Keywords:
-
- Channel Noise;
- Data Compression;
- Differential Pulse Code Modulation;
- Image Enhancement;
- Image Processing;
- Pseudonoise;
- Algorithms;
- Feedback Control;
- Pseudorandom Sequences;
- Redundancy Encoding;
- Root-Mean-Square Errors;
- Signal Encoding;
- Transmission Efficiency;
- Communications and Radar