Slice-layer in video codec

Details Slice-layer in video codec Slice-layer in video codec

2007-01-09

2007-01-09

Bella, Matthew C. (Department: 2624)

Image analysis

Image compression or coding

Including details of decompression

C382S250000, C382S260000, C375S240250

Reexamination Certificate

active

10933960

ABSTRACT:
A video encoder/decoder utilizes a bistream syntax that provides an independently decodable, partial picture unit, which may be in the form of a unit containing one or more contiguous rows of macroblocks (called a slice). This slice layer provides a flexible combination of error-resilience and compression efficiency. The slice layer encodes an efficient addressing mechanism (e.g., a syntax element specifying a beginning macroblock row of the slice layer), as well as an efficient mechanism to optionally retransmit picture header information. The slice layer provides decoding and reconstruction independence by disabling all forms of prediction, overlap and loop-filtering across slice-boundaries. This permits a slice coded in intra-mode to be reconstructed error-free, irrespective of errors in other regions of the picture.

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