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Coding method as well as decoding method and device

An encoding method and encoding technology, applied in the field of communication, can solve the problems of easily wasting computing resources and reducing hardware utilization, and achieve the effect of reducing complexity and improving computing efficiency.

Active Publication Date: 2014-07-30
MIGU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In order to solve the above-mentioned technical problems, the embodiment of the present application provides an encoding method, a decoding method and a device to solve the problem that the ROT transformation process in the prior art encoding and decoding is easy to waste computing resources and reduce hardware utilization.

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  • Coding method as well as decoding method and device
  • Coding method as well as decoding method and device
  • Coding method as well as decoding method and device

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Embodiment Construction

[0067] The following embodiments of the present invention provide an encoding method, a decoding method and a device. In view of the fact that the ROT transformation in the existing encoding and decoding process is relatively complicated and not conducive to hardware implementation, the embodiment of the present application aims to provide a ROT transformation matrix that is easy to implement in hardware. While improving the efficiency of encoding and decoding, it reduces the computational complexity.

[0068] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0069] Both the encodin...

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Abstract

An encoding method, a decoding method and device. The encoding method includes: respectively performing ROT forward transformation on the input signals after DCT transformation according to a plurality of groups of preset ROT forward transformation matrixes so as to obtain transformation coefficients after the ROT forward transformation, wherein each coefficient in the ROT forward transformation matrixes can be decomposed into a plurality of shift coefficients, with each shift coefficient being formed of one shift bit and one sign bit; after quantifying the transformation coefficients obtained after the ROT forward transformation, comparing the distortion situations of the output signals calculated according to each group of quantified transformation coefficients; selecting the ROT forward transformation matrix corresponding to the output signal with minimal distortion as the optimal ROT forward transformation matrix of the current encoding block, and encoding according to the optimal ROT forward transformation matrix. In the present application, the multiplication operation in the ROT transformation process is converted to shift operation and addition operations, improving the calculation.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular, to an encoding method, decoding method and device. Background technique [0002] DCT (Discrete Cosine Transform, Discrete Cosine Transform) is a transformation method widely used in the process of encoding and decoding video images. Because the DCT transformation matrix has symmetric characteristics, the disk algorithm is usually used when realizing the transformation in hardware. Since the DCT transformation is implemented by two one-dimensional transformations, namely along the vertical direction and along the horizontal direction, when the input two-dimensional data to be encoded has significant directional characteristics, for example, the main direction of the data is not in the vertical or horizontal direction , it is difficult to better describe the signal characteristics through DCT. [0003] In view of this, in order to better describe the signal cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/625
CPCH04N19/176H04N19/154H04N19/12H04N19/00078H04N19/00278H04N19/002
Inventor 闻兴区子廉孙林
Owner MIGU CO LTD
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