Device and method for realizing video denoising of embedded HEVC coding unit rapidly

A coding unit and video noise reduction technology, which is applied in the field of multimedia video coding, can solve the problems of video noise reduction methods such as complex algorithm and large amount of computation, and achieve the effect of improving subjective and objective quality, low computation amount, and low delay

Active Publication Date: 2017-08-15
VERISILICON MICROELECTRONICS SHANGHAI +2
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Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a device and method for quickly implementing video noise reduction embedded in HEVC coding units, which is used to solve the problems of video noise reduction methods embedded in HEVC coding units in the prior art. Problems with complex algorithms and large amount of computation

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  • Device and method for realizing video denoising of embedded HEVC coding unit rapidly
  • Device and method for realizing video denoising of embedded HEVC coding unit rapidly
  • Device and method for realizing video denoising of embedded HEVC coding unit rapidly

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[0026] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0027] see Figure 1 ~ Figure 3 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, so that only the components related to the present invention are shown in the diagrams rather than the number, shape and Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the ...

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Abstract

The invention provides a device and method for realizing video denoising of an embedded HEVC coding unit rapidly. The method comprises the steps of determining a noise variance threshold value of a current frame image according to complexity distribution condition of each coding unit in a previous frame image; estimating noise variance of the current frame image according to the noise variance threshold value of the current frame image; calculating a filter coefficient of each conversion unit of the current frame image according to the noise variance of the current frame image; calculating a filter weight of a current conversion unit according to the noise variance of the current frame image; and calculating the filter coefficient of the current conversion unit. A video denoising effect is mainly determined by the filter coefficient of a module. Through application of the device and the method provided by the invention, in a resource limited system, low-complexity, low-operation quantity and low-delay video denoising can be realized, and the subjective and objective quality of video coding is improved. The method and the device provided by the invention are simple and have wide application prospect in the technical field of multimedia video coding.

Description

technical field [0001] The present invention relates to the technical field of multimedia video coding, in particular to a device and method for quickly implementing video noise reduction embedded in HEVC coding units. Background technique [0002] HEVC is the latest video compression standard at present. This standard divides each frame of image into several coding units and encodes them sequentially. It identifies and utilizes the spatial redundancy in each frame, and performs spatial coding on pixel blocks through spatial prediction technology. The temporal connection between the pixel blocks of the frame is realized by motion estimation ME (motion estimate) and motion compensation MC (motion compensation) to realize time-domain coding, identifying and utilizing the remaining spatial redundancy in each frame, through quantization, transformation and entropy Encoding encodes the changes between the original pixel block and the predicted pixel block, and the entire process ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/61H04N19/80
CPCH04N19/61H04N19/80
Inventor 孙艳英
Owner VERISILICON MICROELECTRONICS SHANGHAI
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