Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure
Reexamination Certificate
2005-07-05
2005-07-05
Chen, Wenpeng (Department: 2624)
Image analysis
Image compression or coding
Pyramid, hierarchy, or tree structure
C382S248000, C375S240190
Reexamination Certificate
active
06915015
ABSTRACT:
An apparatus for and a method of coding the bit-planes of an array of numbers. The values in the array of numbers are converted to binary. The binary values are truncated to a predetermined level of accuracy. The number of bit-planes is determined based on the largest absolute value. A tree structured description of the array is generated based on a modified quad-tree coding technique. An SNR (signal to noise ratio) scalable encoding of the significance information for each bit-plane is generated by describing new branches and leaves of the tree corresponding to each bit-plane in a bottom-up-depth-first manner. An encoding of refinement information for each bit-plane is generated. A SNR scalable description of the array is generated by concatenating the encoding of the significance information and the refinement information generated for each bit-plane.
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patent: 5923785 (1999-07-01), Dube
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patent: WO 00/10131 (2000-02-01), None
Ordentlich Erik
Taubman David Scott
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