Patent ID: 11968395
Assignee: GE VIDEO COMPRESSION, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An encoder for encoding into a data stream information related to a plurality of transform coefficients associated with a video, the encoder comprising:
a picture encoder configured for applying, using a processor, predictive coding on a block of a picture of the video to obtain a prediction residual signal related to the block;
a context adaptive entropy encoder configured for, for a current transform coefficient in a transform coefficient block related to the prediction residual signal, entropy encoding, using a processor, a first symbol including a coefficient significance flag based on a context, wherein the context is determined based on an operation involving a first previously encoded transform coefficient; and
a symbolizer configured for mapping, using a processor, a transform coefficient level of the current transform coefficient to a second symbol based on a symbolization parameter, wherein the transform coefficient level is greater than a maximum level associated with the first symbol and the symbolization parameter is determined based on the operation involving a second encoded transform coefficient and an information component type including a color component type related to the transform coefficient block,
wherein the encoder is configured for determining the first previously encoded transform coefficient based on a relative spatial arrangement of the first previously encoded transform coefficient relative to the current transform coefficient, wherein the spatial arrangement is based on a scan position of the current transform coefficient in the transform coefficient block.