Back to results
US 8,542,938 B2Granted
System and method for intra-frame compression using predictive coding
AssigneeEntropic Communications, Inc.
InventorAnurag Goel
Life of this patent
Estimating the term…
Abstract
A system and method for intra-frame compression using predictive coding utilizes some pixels of a macroblock of a video frame as reference pixels to perform predictive coding on the rest of the macroblock when some or all predefined reference pixels for performing predictive coding on the macroblock are not available in the video frame.
Claims20
A method for intra-frame compression, the method comprising:
- determining whether a predefined reference group of pixels for performing predictive coding on a target group of pixels of a video frame is available in the video frame, the predefined reference group of pixels not being a part of the target group of pixels;
- and
- if at least some of the pixels of the predefined reference group of pixels for performing predictive coding on the target group of pixels of the video frame are not available in the video frame, selecting a set of pixels from the target group of pixels and performing predictive coding on the rest of the target group of pixels using a reconstructed version of the set of pixels as reference pixels to compress the video frame.
A system for intra-frame compression, the system comprising:
- a determining unit configured to determine whether a predefined reference group of pixels for performing predictive coding on a target group of pixels of a video frame is available in the video frame, the predefined reference group of pixels not being a part of the target group of pixels;
- and
- a coding unit configured to select a set of pixels from the target group of pixels and to perform predictive coding on the rest of the target group of pixels using a reconstructed version of the set of pixels as reference pixels to compress the video frame if at least some of the pixels of the predefined reference group of pixels for performing predictive coding on the target group of pixels of the video frame are not available in the video frame.
A method for intra-frame compression, the method comprising:
- determining whether a predefined reference group of pixels for performing predictive coding on a rectangular macroblock of pixels of a video frame is available in the video frame, the predefined reference group of pixels not being a part of the rectangular macroblock, the predefined reference group of pixels including a horizontal subgroup of pixels bordering one edge of the rectangular macroblock and a vertical subgroup of pixels bordering another edge of the rectangular macroblock;
- and
- if at least one of the horizontal and vertical subgroups of pixels of the predefined reference group of pixels for performing predictive coding on the rectangular macroblock of the video frame are not available in the video frame, selecting a set of pixels from the rectangular macroblock and performing predictive coding on the rest of the rectangular macroblock using a reconstructed version of the set of pixels as reference pixels to compress the video frame.
Dependencies are inferred from the claim text.