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US 2006/0215766 A1Published application
Region-of-interest coding in video telephony using RHO domain bit allocation
AssigneeQUALCOMM Incorporated
InventorsHaohong Wang, Khaled Helmi El-Maleh
Life of this patent
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Abstract
The disclosure is directed to techniques for region-of-interest (ROI) coding for video telephony (VT). The disclosed techniques also include techniques for allocation of bits to ROI and non-ROI areas using weighted bit allocation models at the macroblock (MB) level within the p domain.
Claims42
A method comprising:
- obtaining a definition of a region of interest within a video frame;
- obtaining a frame budget defining a number of encoding bits available for the frame;
- and
- allocating rho domain values to macroblocks within the frame based on the frame budget and a weighting between macroblocks within the region of interest and macroblocks within areas of the video frame that are not within the region of interest.
1 more element
The method of claim 2, further comprising mapping the rho domain values to corresponding quantization parameter (QP) values to allocate a number of encoding bits to each of the macroblocks.
A device comprising:
- a region-of-interest mapper that generates a definition of a region of interest within a video frame;
- a frame-level rate controller that generates a frame budget defining a number of encoding bits available for the frame;
- and
- a bit allocation module that allocates rho domain values to macroblocks within the frame based on the frame budget and a weighting between macroblocks within the region of interest and macroblocks within areas of the video frame that are not within the region of interest.
1 more element
A computer-readable medium comprising instructions to cause a processor to:
- obtain a definition of a region of interest within a video frame;
- obtain a frame budget defining a number of encoding bits available for the frame;
- and
- allocate rho domain values to macroblocks within the frame based on the frame budget and a weighting between macroblocks within the region of interest and macroblocks within areas of the video frame that are not within the region of interest.
1 more element
Dependencies are inferred from the claim text.