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Method and device for filtering video codes

A video coding and coding technology, applied in the field of communication, can solve the problem of low image quality and achieve the effect of improving image quality

Active Publication Date: 2014-09-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a filtering solution for video coding, so as to at least solve the problem of low image quality in the above-mentioned related art based on region-of-interest coding

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  • Method and device for filtering video codes
  • Method and device for filtering video codes

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Embodiment 1

[0031] An embodiment of the present invention provides a video coding filtering method. figure 1 is a flow chart of a filtering method for video coding according to an embodiment of the present invention, such as figure 1 As shown, the method includes:

[0032] Step S102, performing region-of-interest detection on the video image before encoding each frame of video image, to obtain the region-of-interest in units of macroblocks;

[0033] Step S104, calculating the distance from each macroblock in the video image to the central macroblock of the region of interest;

[0034] Step S106, performing spatial filtering on each macroblock according to the distance from each macroblock to the central macroblock.

[0035] In this embodiment, each macroblock is spatially filtered according to the distance from each macroblock to the center of the region of interest, which can reduce the high-frequency information of the image in the non-interest region, so that more coding bits can be ...

Embodiment 2

[0043] This embodiment provides a specific implementation manner of a filtering method for video coding according to an embodiment of the present invention, and the method includes:

[0044] Step 1: Perform region of interest detection on the input image to obtain the region of interest in units of macroblocks.

[0045] The second step: perform spatial filtering on the entire frame image. figure 2 is a schematic diagram of a filtering method according to an embodiment of the present invention, such as figure 2 As shown, spatial pixel domain filtering (that is, spatial domain filtering) occurs before encoding, and belongs to pre-processing of video encoding. The role of spatial filtering is to reduce the high-frequency information of the image in the non-interest area, so that more coding bits can be used in the interest area, and at the same time, ensure the smooth transition of the image quality between the interest area and the non-interest area. For the luminance compon...

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Abstract

A filtering method and device for video coding are disclosed in the present invention. The method includes: detecting an interested area of a video image before coding each frame video image, and obtaining the interested area in units of macro blocks; calculating distances between each of the macro blocks in the video image and a central macro block in the interested area; respectively performing a space filter on each macro block according to the distances between each of the macro blocks and the central macro block. The present invention can achieve the effect of improving the image quality of the interested area.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a video encoding filtering method and device. Background technique [0002] The great progress of network technology and video coding technology makes it convenient for people to use various terminals to conduct video conversations. However, due to the limitation of the channel bandwidth, the image quality of the current video call is generally unsatisfactory. It is manifested in blurred images, squares in images, and color distortion. In order to provide users with a better video call experience, the video image quality at low bit rates must be improved. [0003] In the case of relatively insufficient communication bandwidth at present, a video coding method based on region of interest has been proposed. The video coding method based on the region of interest distinguishes the part of the video image that the user is more concerned about (for example, the face in a video ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/117H04N19/176H04N19/895
CPCH04N19/00278H04N19/80H04N19/176H04N19/00903H04N19/85H04N19/0089
Inventor 曾幸鲁晓牧吴钊王宁
Owner ZTE CORP