Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure
Patent
1994-06-29
1996-07-16
Boudreau, Leo
Image analysis
Image compression or coding
Pyramid, hierarchy, or tree structure
382248, 358432, G06K 900
Patent
active
055374930
ABSTRACT:
A data compression technique is described for use in systems employing frequency separation, such as wavelet separation, in which the sub bands (0 to 9) have different numbers of frequency component values therein. The sub bands are scanned to form a stream of data for feeding to an entropy encoder (30) in an order in which a number of samples from each sub band are taken in turn, that number being proportional to how many frequency values are in the particular sub band.
REFERENCES:
patent: 4939583 (1990-07-01), Tsuboi et al.
patent: 5021891 (1991-06-01), Lee
patent: 5063608 (1991-11-01), Siegal
patent: 5148498 (1992-09-01), Resnikoff et al.
patent: 5315670 (1994-05-01), Shapiro
patent: 5321776 (1994-06-01), Shapiro
"Entropy Coding for Wavelet Transform of Image--And Its Application for Motion Picture Coding--"; SPIE vol. 1605, visual Communications and Image Processing '91, pp. 456-466; Ohta et al.
Gharavi, "Subband Coding Algorithms for Video Applications: Videophone to HDTV-Conferencing", IEEE Trans. on Circuits and Sys. for Video Tech., vol. 1, No. 2, Jun. 1991, pp. 174`183.
Boudreau Leo
Frommer William S.
Johns Andrew W.
Sinderbrand Alvin
Sony Corporation
LandOfFree
Apparatus for compressing image data employing entropy encoding does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for compressing image data employing entropy encoding , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for compressing image data employing entropy encoding will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1791189