Patent ID: 9432700
Filing Date: 2016-08-30
CPC Classification: H04N

Claim Text:
1. An apparatus comprising: a video encoder configured to encode an input video signal to generate an output bitstream that is representative of the input video signal, wherein the video encoder further includes: at least one feedback loop having a sample adaptive offset (SAO) filter and an adaptive loop filter (ALF), wherein the ALF is configured to perform only scaling processing and the ALF is implemented to receive a SAO-filtered output signal from the SAO filter, and wherein: the ALF is configured selectively to operate on a block by block basis or a slice by slice basis within the video encoder; the apparatus configured to signal to at least one additional apparatus, which is implemented to receive the output bitstream, which subset of a plurality of blocks or which subset of a plurality of slices associated with the input video signal that have been selectively filtered by the ALF, wherein the at least one additional apparatus is implemented to receive the output bitstream and to decode the output bitstream to recover the input video signal; and the ALF configured to perform only scaling processing to perform illumination compensation using at least one gain value to remove at least one amount of quantization noise during encoding of the input video signal to generate the output bitstream having at least one least one quality.