Video decoding method and device
A video decoding and video coding technology, applied in the field of video decoding, can solve problems such as inability to decode, incapable of regional transmission information decoding, etc., to achieve the effect of reducing workload and saving maintenance costs
Active Publication Date: 2012-05-30
ACTIONS ZHUHAI TECH CO
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[0006] After the entropy decoding result is described in a new encoding form, the existing method of decoding transform coefficients for the run-level entropy decoding result is no longer applicable, because, on the one hand, it cannot decode the regional transmission information, and on the other hand On the one hand, it cannot decode non-run-level transform coefficients through the original statistics and filling methods
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[0029] In the embodiment of the present application, in the video decoding process, the video decoding method proposed for the entropy decoding result using the new coding structure includes: after entropy decoding the video coded stream, reading the video coded code according to the set data length The data generated after entropy decoding is decoded for the transformation coefficient of a unit image block according to the read data after reading the data of a set length each time, wherein the decoding of the transformation coefficient for the unit image block includes: determining The value of each bit in the data of the set length read is used as the decoding result of the flag bit, and the decoding result of the flag bit is saved; if the set length read this time is determined according to the decoding result of the flag bit If the data contains a constant transformation coefficient, then the decoded value of the constant transformation coefficient (hereinafter referred to ...
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The application discloses a video decoding method and a video decoding device. The method comprises the following steps of: reading data generated from a video code stream subjected to entropy decoding according to set data length; decoding according to a conversion coefficient aiming at a corresponding unit image block every time the data of set length is read; determining value of each bit in the read data of the set length as a zone bit decoding result and storing the result; if the read data of the set length certainly comprises a constant conversion coefficient according to the zone bit decoding result, acquiring the decoded value of the constant conversion coefficient according to the zone bit decoding result; and if the read data of the set length certainly comprises an escape dataconversion coefficient according to the zone bit decoding result, continuously reading the data according to the set length on specified occasions and acquiring the decoded value of the escape data conversion coefficient.
Description
technical field [0001] The present application relates to the field of video decoding, in particular to a video decoding method and device. Background technique [0002] In the field of video decoding, the decoding process usually includes the following steps: entropy decoding, transform coefficient decoding, inverse scanning, inverse transform, intra-frame prediction or inter-frame motion compensation, filtering and smoothing. After going through these steps in sequence, one frame of video image can be decoded from the encoded code stream, and multiple frames of video image are continuously decoded according to this step to form the final watched video image. [0003] In the above video decoding process, after the entropy decoding result is obtained, it is necessary to perform transformation coefficient decoding and inverse scanning on the obtained entropy decoding result, so as to obtain inversely transformed input data. For this link, the encoding form of run-level codes...
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IPC IPC(8): H04N7/26H04N7/30H04N19/44
Inventor 易湖李洁珺
Owner ACTIONS ZHUHAI TECH CO