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.
Claims6
A method of a digital processor for image coding using hierarchical sample adaptive band offset, comprising:
- determining a band offset type of four possible band offset types for at least a portion of the image, wherein each band offset type is divided into 8 sub-bands;
- determining an offset related to the portion of the at least a portion of the image, wherein each sub-band of the band offset type has an offset;
- and
- encoding the determined band offset type and offset for the at least the portion of the image.
A method of a digital processor for image coding using hierarchical sample adaptive band offset, comprising:
- 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.
A decoder for image data decoding using hierarchical sample adaptive band offset, comprising:
- means for decoding a signal of a portion of an image;
- means for determining a band offset type and offset of a portion of the image;
- means for utilizing the band offset type and offset to determine a sub-band;
- and
- means for reconstructing a pixel value according to the determined offset value.
The decoder of claim 6 further comprising means for refraining from applying an offset value when a reconstructed pixel is outside a predetermined range.
Dependencies are inferred from the claim text.