Methods for decoder-side motion vector derivation

A motion vector, end motion technology, applied in the field of DMVD)
CN102970543AInactive Publication Date: 2013-03-13MEDIATEK INC
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
MEDIATEK INC
Publication Date
2013-03-13
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

An exemplary method for decoder-side motion vector derivation (DMVD) includes: checking a block size of a current block to be encoded and accordingly generating a checking result; and utilizing a DMVD module to refer to the checking result to control conveyance of first DMVD control information which is utilized for indicating whether a DMVD coding operation is employed to encode the current block. When the checking result indicates a predetermined criterion is satisfied, the first DMVD control information is sent in a bitstream; otherwise, the first DMVD control information is not sent.
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Description

[0001] This application is a divisional application of an application with a filing date of December 14, 2010, an application number of 201010586667.6, and an invention title of "Deriving Method for Decoder Motion Vector". technical field

[0002] The present invention relates to a data encoding / decoding method, and in particular to a decoder-side motion vector derivation (Decoder-side Motion Vector Derivation, hereinafter referred to as DMVD) method. Background technique

[0003] In video coding, the temporal and spatial correlations found in image sequences can be exploited to reduce bitrate / enhance coding efficiency. Generally speaking, motion compensated inter-frame prediction (motioncompensated inter-frame prediction) greatly affects the final compression efficiency. Motion information such as motion vector (Motion Vector, hereinafter referred to as MV) data and reference image index is obtained at the encoder and encoded in the bitstream, so the decoder can simply perf...

Claims

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