Block Artifact Suppression in Video Coding
a technology of video coding and artifacts, applied in the field of block artifact suppression in video coding, can solve problems such as introducing annoying visual artifacts
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[0018]Specific embodiments of the invention will now be described in detail with reference to the accompanying figures. Like elements in the various figures are denoted by like reference numerals for consistency.
[0019]As used herein, the term “picture” may refer to a frame or a field of a frame. A frame is a complete image captured during a known time interval. For convenience of description, embodiments are described herein in reference to HEVC. One of ordinary skill in the art will understand that embodiments of the invention are not limited to HEVC.
[0020]As used herein, the term ‘activity’ refers to the extent of variation in the values of pixels contained in a block of video data. Thus, in general, a block with higher ‘activity’ has greater variation in pixel values, and will have more higher-frequency components (in terms of variation in the pixel values) than low-frequency components. In contrast, a block with lower ‘activity’ has lesser variation in pixel values, and will hav...
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