Video image encoding and decoding method, encoding device, decoding device and system thereof

A technology for video images and encoding methods, applied in the field of image processing, can solve the problems of occupying a large number of bits, affecting encoding efficiency, affecting image compression, etc., to avoid the increase of data bandwidth, accurate decoding results, and improve encoding efficiency.

A technology for video images and encoding methods, applied in the field of image processing, can solve the problems of occupying a large number of bits, affecting encoding efficiency, affecting image compression, etc., to avoid the increase of data bandwidth, accurate decoding results, and improve encoding efficiency.

CN102685504BActive Publication Date: 2015-08-19HUAWEI TECH CO LTD
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  • Video image encoding and decoding method, encoding device, decoding device and system thereof
  • Video image encoding and decoding method, encoding device, decoding device and system thereof
  • Video image encoding and decoding method, encoding device, decoding device and system thereof

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Embodiment Construction

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

[0028] First, combine figure 1 A video image encoding method 100 according to an embodiment of the present invention is described.

[0029] like figure 1 As shown, the method 100 includes: in S110, based on the motion vector fusion technology, determine the best fusion candidate block of the current block; in S120, based on the prediction direction of the best fusion candidate block, determine the motion vector derivation that the decoding end needs to ...

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Abstract

Embodiments of the present invention provide an encoding method, a decoding method, an encoding apparatus, a decoding apparatus, for a video image. The encoding method includes: determining an optimal integrated candidate block for a current block based on a motion vector integration technology; determining, based a prediction direction of the optimal integrated candidate block, a motion vector derivation mode that needs to be used by a decoder; correcting a motion vector of the current block based on the motion vector derivation mode; and determining a residual between a predicted value and an original value of the current block based on the corrected motion vector, thereby encoding the current block. According to the technical solutions, a more accurate predicted value is obtained by correcting the motion vector, and a smaller residual is generated, thereby improving encoding efficiency, avoiding an increase in data bandwidth, improving decoding quality, and reducing calculation complexity.

Description

technical field [0001] The present invention relates to the field of image processing, and more particularly, to a video image encoding and decoding method, an encoding device, a decoding device and a system thereof in the field of image processing. Background technique [0002] Motion prediction and motion compensation are important technologies for video compression, and a considerable part of the compressed code stream is used to transmit motion information. The motion information of the block may include the prediction direction, motion vector and reference frame information of the block. The reference frame information may characterize which frame or frames the block is derived from. In the case of low bit rates, especially for high-definition video, the number of bits used to represent motion information often exceeds half of the total bit stream. Therefore, efficient encoding of motion information is crucial. [0003] At present, the inter-frame prediction technolo...

Claims

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Application Information

Patent Timeline
19 Aug 2015
Publication
CN102685504B
IPC
H04N19/50
CPC
H04N19/56; H04N19/567; H04N19/00684; H04N19/523; H04N19/517; H04N19/52; H04N19/573; H04N19/51
Inventors
ζž—ε››ζ–°; 杨明远