Method and corresponding device for block coding data

Details Method and corresponding device for block coding data Method and corresponding device for block coding data

2011-07-05

2011-07-05

Tran, Phuoc (Department: 2624)

Image analysis

Image compression or coding

Adaptive coding

C382S250000, C375S240030, C375S240200, C375S240240

Reexamination Certificate

active

07974483

ABSTRACT:
The method for block coding data, such as video data, via a compression operation includes applying to input-data blocks a discrete-cosine-transform (DCT) operation and a quantization operation to produce compressed-data blocks. The compressed-data blocks are subjected to a coding operation to obtain compressed output flows; and an inverse-quantization operation and an inverse-discrete-cosine-transform (IDCT) operation are applied on the compressed-data blocks to obtain reconstructed blocks. The method includes controlling generation of mismatch errors from the input-data blocks by detecting data blocks from the input-data blocks and compressed-data blocks that are liable to cause mismatch errors, and modifying the blocks that are liable to cause mismatch errors prior to the coding operation.

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August et al., “Low power design of DCT and IDCT for low bit rate video codes”, IEEE vol. 6, No. 3, Jun. 2004 pp. 1-9.
“Text of ISO/IEC 14496-2 Visual Third Edition”, ITU Study Group 16, Video Coding Experts Group, Aug. 2003, pp. 1-180 (part 1).
“Text of ISO/IEC 14496-2 Visual Third Edition”, ITU Study Group 16, Video Coding Experts Group, Aug. 2003, pp. 1-270 (part 2).
“Text of ISO/IEC 14496-2 Visual Third Edition”, ITU Study Group 16, Video Coding Experts Group, Aug. 2003, pp. 1-270 (part 3).
“Text of ISO/IEC 14496-2 Visual Third Edition”, ITU Study Group 16, Video Coding Experts Group, Aug. 2003, pp. 1-24 (part 4).

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