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Video data processing device and method thereof

A video data and processing device technology, applied in the field of image display, can solve the problems of not being able to effectively save contours, failing to meet the requirements of saving contours and reducing noise, and being unable to effectively reduce noise, etc., to achieve effective preservation of contours, noise reduction, High image quality effects

Inactive Publication Date: 2007-08-29
NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Because the traditional filter size is fixed at 3×3, 9×9, 11×11, etc., it fails to meet the requirements of preserving contours and reducing noise
[0007] In more detail, if the size of the filter is small, the pixels of the filtered object will be able to effectively preserve the outline because they are less affected by the surrounding pixels, but will not be able to effectively reduce the noise
Conversely, if the size of the filter is large, the pixels of the filtering object will be able to effectively reduce noise due to the large influence of surrounding pixels, but will not be able to effectively preserve the outline

Method used

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  • Video data processing device and method thereof
  • Video data processing device and method thereof

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example 1

[0027] As can be seen with reference to Fig. 3, the video data processing device of the example of the present invention is made up of following several parts, namely: be provided with the first filter (200) that the video data that receives is carried out once filtering; The video data output by the device (200) will be stored in the storage control unit (202) of the memory in units of frames; the frame plane noise dispersion value (σ 2 ), and with its noise dispersion value (σ 2 ) as a basis to calculate the threshold of the corresponding frame surface (T ij ), and then calculate the pixel activity around the pixel of the filtering object (S ij ) computing unit (206); a threshold value (T ij ) and activity (S ij ) is compared, and the comparator (208) that will output its result; Be provided with according to the comparison result of comparator (208) output, come increase and decrease filter size (N i+1j ), and a second filter (210) performing filtering based on the incr...

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Abstract

A video data processor and method thereof, which is characteristic of that memory and controller using frame as unit to store video data, calculating frame noise dispersing value stored in memory and relative frame threshold, calculating activity of pixel of frame, increasing / reducing filter size according to comparing threshold with activity, filtering relative pixel, said invention can effectively preserve outline and reduce noise to provide high quality picture.

Description

technical field [0001] The invention relates to the technical field of image displays, in particular to a video data processing device and method thereof. Background technique [0002] Referring to FIG. 1, a conventional video data processing apparatus for eliminating noise entering a video signal will be described. [0003] A video signal input unit (100) of a video data processing device selects one of many video signals and supplies it to a video signal processing unit (102). The video signal processing unit (102) converts the received video signal into video data, and supplies it to the video data conversion unit (104). The video data conversion unit (104) converts the format of the received video data and supplies it to the first filter (106). The first filter (106) will remove the influence of the false signal on the received video data, and at the same time perform pre-amplification and then provide it to the storage control part (108). The storage control unit (10...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/21
Inventor 禹钟镇
Owner NANJING LG TONGCHUANG COLOR DISPLAYS SYST CO LTD