发明名称 |
Apparatus for and method for SNR scalable quad-tree bit-plane coding |
摘要 |
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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申请公布号 |
US6915015(B1) |
申请公布日期 |
2005.07.05 |
申请号 |
US20000531918 |
申请日期 |
2000.03.21 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
TAUBMAN DAVID SCOTT;ORDENTLICH ERIK |
分类号 |
G06K9/36;H04N7/12;H04N7/26;(IPC1-7):G06K9/36 |
主分类号 |
G06K9/36 |
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