Picture encoding apparatus and method

Details Picture encoding apparatus and method Picture encoding apparatus and method

2005-03-08

2005-03-08

Wallerson, Mark (Department: 2626)

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

C382S238000, C382S239000, C382S240000, C382S251000, C382S253000

Reexamination Certificate

active

06864997

ABSTRACT:
A picture encoding apparatus and the method in which the quantization step width of the lower hierarchy data having a resolution higher than that of the upper hierarchy data is determined for each predetermined block of respective hierarchy data based on the quantization step width determined by the upper hierarchy data having a low resolution, so that the additional code indicating the characteristics of quantizer can be omitted thereby the compression efficiency can be improved and the deterioration of picture quality can be reduced when picture data is hierarchical-encoded.

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Globe Com '92; IEEE Global Telecommunications Conference, Orlando, Florida, Dec. 6-9, 1992, vol. 1 of 3, “A Fast Feature Matching Algorithm of Multi-Resolution Motion Estimation”, Xiaobing Lee and A. Leon-Garcia, pp. 320-324.

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