Methods and systems for adaptive cropping
US11438604B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2021 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Mar 5, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/865
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A decoder includes circuitry configured to receive a bitstream, identify, as a function of the bitstream, a current frame, and a cropped sub-frame of the current frame, wherein the cropped sub-frame is signaled in the bitstream, the cropped sub-frame is signaled using at least a horizontal offset, the at least a horizontal offset includes an sps_conf_win_left_offset and an sps_conf_win_right_offset, determine, as a function of the bitstream, a scaling constant associated with the cropped sub-frame, wherein the scaling constant is signaled within the bit stream, and the scaling constant is signaled as a function of a pps_pic_width_in_luma_samples parameter, a pps_scaling_win_right_offset parameter, and a pps_scaling_win_left_offset parameter, and reconstruct pixel data of the cropped sub-frame using the scaling constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.