Title :
Bit rate reduction algorithm for a digital VCR
Author :
Kim, S.I. ; Park, Y.C. ; Youn, D.H. ; Kim, W.K. ; Yoo, B.K.
Author_Institution :
Yonsei Univ., Seoul, South Korea
fDate :
8/1/1991 12:00:00 AM
Abstract :
The authors describe a bit rate reduction algorithm for use in digital VCRs, based on block scrambling and the two-dimensional adaptive discrete cosine transform. This method satisfies many of the demands unique to digital VCRs. Before the encoding process, the input image is divided into 8×8 pixel blocks and then scrambled on a block-by-block basis to achieve efficient bit distribution in a frame and to simplify buffer control strategy. In addition to block scrambling, a simple yet efficient variable length coding method is proposed. Simulation results are presented
Keywords :
encoding; picture processing; transforms; video tape recorders; bit rate reduction algorithm; block scrambling; encoding; home-use digital VCR; intraframe transform coding scheme; two-dimensional adaptive discrete cosine transform; variable length coding; Biomedical engineering; Bit rate; Commercialization; Data compression; Discrete cosine transforms; Error correction; Image coding; Image reconstruction; Pixel; Video recording;
Journal_Title :
Consumer Electronics, IEEE Transactions on
