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US 2020/0404299 A1Published application
Method and Apparatus for Image and Video Coding Using Hierarchical Sample Adaptive Band Offset
AssigneeTexas Instruments Incorporated
InventorsWoo-Shik Kim, Do-Kyoung Kwon
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Abstract
A method and apparatus for image coding using hierarchical sample adaptive band offset. The method includes decoding a signal of a portion of an image, determining a band offset type and offset of a portion of the image, utilizing the band offset type and offset to determine a sub-band, and reconstructing a pixel value according to the determined offset value.
Claims21
A system comprising:
- a receiver component configured for receiving encoded video data representing a sequence of pictures, each picture represented by an array of component pixel values for one or more components, each component pixel value comprising a binary value;
- a video decoder component coupled to the receiver component, the video decoder component configured for:
- reconstructing an array of component pixel values of at least one component in a coding unit of a first picture of the sequence of pictures represented by the video data;
- determining a selected band for band offset sample adaptive filtering for the coding unit, the selected band identified by five most significant bits of each component pixel value associated with the selected band;
- determining offset values for four sub-bands in the selected band;
- and
- performing sample adaptive offset filtering on the component pixel values in the four sub-bands of the coding unit;
- and
- a display coupled to the video decoder component configured for displaying the sample adaptive offset filtered pixel values.
6 more elements
A method of decoding video comprising:
- receiving an encoded video data stream representing a sequence of pictures, each picture represented by at least one coding unit, each coding unit comprising an array of component pixel values for one or more components, each component pixel value comprising a binary value;
- reconstructing an array of component pixel values of at least one component of a coding unit of a first picture of the sequence of pictures represented by the video data;
- determining a selected band for band offset sample adaptive filtering for the coding unit, the selected band identified by five most significant bits of each component pixel value associated with the selected band;
- determining offset values for four sub-bands in the selected band;
- and
- performing sample adaptive offset filtering on the component pixel values in the four sub-bands of the coding unit.
3 more elements
Dependencies are inferred from the claim text.