Confusion of multiple filters in adaptive loop filtering in video coding
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A filter, video data technology, applied in the direction of digital video signal modification, image communication, electrical components, etc.
Active Publication Date: 2018-12-21
QUALCOMM INC
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[0020] Video coding typically involves predicting a block of video data from an already coded block of video data in the same picture (i.e., intra prediction) or from an already coded block of video data in a different picture (i.e., inter prediction). predict). In some cases, video encoders also calculate residual data by comparing the predictive block with the original block. Thus, the residual data represents the difference between the predictive block and the original block. A video encoder transforms and quantizes the residual data, and the transformed and quantized residual data is signaled in an encoded bitstream. A video decoder adds the residual data to the predictive block to produce a reconstructed video block that more closely matches the original video block than the predictive block alone. To further improve the quality of decoded video, a video decoder may perform one or more filtering operations on the reconstructed video block. Examples of these filtering o...
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Abstract
An apparatus for encoding or decoding video data reconstructs one or more blocks of a current picture of the video data. The one or more blocks of the current picture comprise reconstructed samples ofthe current picture. In addition, after reconstructing the one or more blocks of the current picture, the apparatus applies a particular function of a plurality of filters to a current block of the current picture. The current block comprising the reconstructed samples of the current picture.
Description
[0001] This application claims the benefit of U.S. Provisional Patent Application 62 / 337,243, filed May 16, 2016, and U.S. Provisional Patent Application 62 / 440,877, filed December 30, 2016, the entire contents of each of said Provisional Patent Applications Incorporated herein by reference. technical field [0002] The present invention relates to computing devices that perform video coding. Background technique [0003] Digital video capabilities can be incorporated into a wide range of devices, including digital television, digital broadcast systems, wireless broadcast systems, personal digital assistants (PDAs), notebook or desktop computers, tablet computers, e-book readers, digital cameras, digital recording devices, digital media players, video game devices, video game consoles, cellular or satellite radiotelephones, so-called "smart phones," video teleconferencing devices, video streaming devices, and the like. Digital video devices implement video compression techn...
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