Title :
Application of Pseudorandom Noise to DPCM
Author :
Troxel, Donald E.
Author_Institution :
Research Laboratory of Electronics and the Dept. of Electrical Engineering/Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA
fDate :
12/1/1981 12:00:00 AM
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.
Keywords :
DPCM coding/decoding; Image coding; Brightness; Compression algorithms; Computer errors; Decoding; Feedback loop; Image quality; Modulation coding; Noise reduction; Pulse modulation; Redundancy;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1981.1094930
