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Video quality detection method and image processing circuit

A quality inspection and image processing technology, applied in TV, electrical components, image communication, etc., can solve problems such as image processing errors, video information errors, etc.

Pending Publication Date: 2020-12-22
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of subsequent image processing errors caused by incorrect video information recorded in the video signal input to the display device, the present disclosure proposes a video quality detection method and an image processing circuit applied to the display device, which can obtain the video frames of each frame The luminance information of the pixels, the luminance characteristics of each frame are obtained by statistical methods, and the resolution of each frame of the video is judged accordingly

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  • Video quality detection method and image processing circuit
  • Video quality detection method and image processing circuit

Examples

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no. 1 example

[0066] Taking the MxN pixels (M is the row, N is the column) of a frame in the video as an example, the brightness value (Luminance) of a pixel in a specific color space, or using red (Red), green (Green) and The three color values ​​of blue (Blue) calculate the brightness value.

[0067] The image processing circuit provides a register for temporarily storing image signals to be processed, such as a line buffer or a frame buffer. The size of the register affects the image processing capability of the image processing circuit. When processing, refer to image 3 A flowchart showing an embodiment of a video quality detection method.

[0068] In this embodiment of the process, the video signal is first obtained from the video source (step S301), and the video signal is subjected to image processing in units of frames. Each pixel value is first temporarily stored in the temporary register, and the image processing circuit obtains the value in the temporary register. image signal...

no. 2 example

[0079] According to yet another embodiment of the video quality detection method, the method includes using a plurality of brightness filters as a threshold for filtering out at least one frame of images that can be used for the brightness characteristics of the attributes of each frame of images, such as a high-pass filter (highpass filter) , set each brightness filter to have different brightness filtering parameters and different brightness filtering levels respectively, use these multiple brightness filters to perform brightness filtering on the brightness values ​​of pixels in each frame image in the video, and filter out at least one frame In the image, the brightness feature that can be used as the attribute of each frame image, the method is as follows Figure 7 Example of the process described.

[0080] according to Figure 7 In the described process embodiment, similarly, the image processing circuit receives the video signal (step S701), and also obtains the bright...

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Abstract

The invention discloses a video quality detection method and an image processing circuit, and the method comprises the steps: enabling the image processing circuit to receive a video signal with at least one frame of image, obtaining the brightness information of each pixel from the information of the pixels in each frame of image, and then screening out the brightness features, which can serve asthe attributes of each frame of image, in each frame of image through a threshold, and therefore, the quality of each frame of image and the quality of the video signal can be judged, and the image processing circuit can respectively select an image processing program corresponding to the quality of each frame of image for each frame of image or the whole video.

Description

technical field [0001] The present invention relates to a method for detecting video quality, in particular to a method for detecting video quality and a related image processing circuit applied in a display device to obtain statistical values ​​of input video signals. Background technique [0002] In the existing image processing technology applied to the display device, when a video is input to the display device, the processing circuit in the display device can obtain the resolution and other information of the video, so as to select a corresponding processing program according to the video information. Wherein, when the input video is of high resolution, the follow-up measures will perform an image processing program with the processing parameters for high-resolution video signals, such as image sharpening (sharpness); otherwise, if the input video is of low resolution, the follow-up The image processing program should apply processing parameters for low-resolution video...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
CPCH04N17/004
Inventor 陈正岳曾如汶
Owner REALTEK SEMICON CORP