Method for deblocking field-frame video

摘要

Methods are disclosed for performing improved deblocking filtering across edges between macroblocks, with particular application to cases where one macroblock is field coded and its neighbors are frame coded. A method for filtering across horizontal edges comprises determining which macroblocks are considered to be vertically adjacent to each other. The method also determines which macroblocks are considered to be sampled at a same time. Finally, filtering is performed between vertically adjacent macroblocks that are considered to be sampled at a same time. Another method for filtering across vertical edges comprises determining which macroblocks are considered to be horizontally adjacent to each other. The method effectively re-arranges a vertical ordering of horizontal lines of at least a subset of the horizontally adjacent macroblocks. Finally, filtering is performed between the horizontally adjacent macroblocks after the re-arranging.

主权项

1. In a system having a first block of video data, the system further having a second block of video data vertically-adjacent to the first block of video data, a method comprising:
determining whether the first block of video data is frame-coded or field-coded; determining whether the second block of video data is frame-coded or field-coded; in response to the first block of video data and the second block of video data both being frame-coded, processing the first block of video data and the second block of video data using a frame-deblocking filter; and in response to at least one of the first block of video data or the second block of video data being field-coded, processing the first block of video data and the second block of video data using a field-deblocking filter.