Digital images

Details Digital images Digital images

2007-03-12

2010-11-09

Ge, Yuzhen (Department: 2624)

Image analysis

Image compression or coding

Adaptive coding

C382S240000

Reexamination Certificate

active

07831103

ABSTRACT:
A rate control means for rate allocation in JPEG2000 processing apparatus is disclosed. The rate control means includes means to receive various parameters from the tier-1 coder and means to calculate R-D slope, means for composing a bucket element, means for comparing the RD slope of each bucket element with the threshold slope of each bucket, and selecting the bucket into which the current element is to be added; means for accepting the selected bucket number and generating an address for storing the current bucket element; means for keeping a count of, number of elements in each bucket and the sum of the differential byte count of each element in that bucket; for all buckets; means for including the bucket elements and means for keeping the record of number of coding passes and number of bytes to be included for each code block, during and after the rate control.

REFERENCES:
patent: 6760482 (2004-07-01), Taubman
patent: 6987890 (2006-01-01), Joshi et al.
patent: 6993199 (2006-01-01), Chebil
patent: 7308146 (2007-12-01), Becker et al.
patent: 7668380 (2010-02-01), Marcellin et al.
patent: 7672523 (2010-03-01), Yeung et al.

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