characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding

Full Title

Methods or arrangements for coding, decoding, compressing or decompressing digital video signals > using adaptive coding > characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding

Classification Context

Section:

ELECTRICITY

Class:

ELECTRIC COMMUNICATION TECHNIQUE

Subclass:

PICTORIAL COMMUNICATION, e.g. TELEVISION

Scope Notes

Glossary: (Video) Object MPEG-4 object, i.e. a region of the image with arbitrary shape Slice slices A set of blocks within an image, e.g. a line of blocks. Block blocks A rectangular matrix of pixels. Macroblock macroblocks MPEG coding unit formed by four blocks arranged as a 2 x 2 matrix. Group of pictures groups of pictures MPEG coding unit formed by a set of consecutive pictures. Scalable video layer scalable video layers Coding unit of a scalable encoded video elementary stream

Child Classifications

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• H04N 19/17 the unit being an image region, e.g. an object
• H04N 19/177 the unit being a group of pictures [GOP]
• H04N 19/179 the unit being a scene or a shot
• H04N 19/18 the unit being a set of transform coefficients
• H04N 19/182 the unit being a pixel
• H04N 19/184 the unit being bits, e.g. of the compressed video stream
• H04N 19/186 the unit being a colour or a chrominance component
• H04N 19/187 the unit being a scalable video layer