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US 10,455,230 B2Granted
Methods for improving low-cost video/image compression
AssigneeAvago Technologies International Sales Pte. Limited
InventorFrederick George Walls
Life of this patent
Estimating the term…
Abstract
A method and system for coding or decoding is disclosed. The system or method may receive a chroma subsampled picture and map the chroma subsampled picture into a non chroma subsampled format picture. The system or method may receive a non chroma subsampled picture and remap the samples into a chroma subsampled picture.
Claims21
A video encoder comprising:
- circuitry configured to:
- receive a 4:2:0 format picture;
- form a first component within a first group of a 4:4:4 container with a first set of luma samples of alternating positions from a first line of the 4:2:0 mode picture;
- form a second component within the first group of the 4:4:4 container with a second set of luma samples from the first line of the 4:2:0 mode picture of opposite alternating positions with respect to the first set of luma samples in the first component;
- form at least one chroma component within the first group, the at least one chroma component having a first set of chroma samples from the 4:2:0 mode picture;
- and
- transmit the 4:4:4 container.
4 more elements
A video encoder comprising:
- circuitry configured to:
- receive a chroma subsampled picture;
- form a first component within a first group of a non-subsampled container with a first set of luma samples of alternating positions from a first line of the chroma subsampled picture;
- form a second component within a first group of a non-subsampled container with a second set of luma samples from the first line of the chroma subsampled picture of opposite alternating positions with respect to the first set of luma samples in the first component;
- form at least one chroma component within the first group, the at least one chroma component comprising a first set of chroma samples from the chroma subsampled picture;
- and
- encode the non-subsampled container.
4 more elements
A video decoder comprising:
- circuitry configured to:
- receive a 4:4:4 container with a first group including a first component having a first set of luma samples of alternating positions, a second component having a second set of luma samples in opposite alternating positions with respect to the first set of luma samples in the first component, and at least one chroma component having a first set of chroma samples corresponding to the first set of luma samples;
- extract the first set of luma samples from the first component;
- extract the second set of luma samples from the second component;
- extract the first set of chroma samples from the at least one chroma component;
- and
- generate a 4:2:0 picture including the first set of luma samples being located on a first line at alternating positions, the second set of luma samples being located on the first line at opposite alternating positions with respect to the first set of luma samples, and the chroma samples being corresponding to the first set of luma samples.
4 more elements
A video encoder comprising:
- circuitry configured to:
- receive a 4:2:2 picture;
- form a first component within a first group of a 4:4:4:4 container with a first set of luma samples of alternating positions from a first line of the 4:2:2 picture;
- form a second component within a first group of a 4:4:4:4 container with a second set of luma samples from the first line of the 4:2:2 picture of opposite alternating positions with respect to the first set of luma samples in the first component;
- form at least one chroma component within the first group, the at least one chroma component comprising a first set of chroma samples from the 4:2:2 picture;
- and
- encode the 4:4:4:4 container.
4 more elements
Dependencies are inferred from the claim text.