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Method for eliminating scintilltion of moving picture

A technology of picture and display process, applied in color TV parts, TV system parts, control exposure and other directions, can solve the problems of weak dark stripes and difficult for users to judge, and achieves a small amount of calculation and high judgment accuracy. Effect

Inactive Publication Date: 2004-06-30
VIMICRO CORP
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Problems solved by technology

But if the parameters of the camera device are set under 50Hz light source or outdoor natural light at this time, the actual exposure time is not an integral multiple of 1 / 120 second, and vertical scrolling will also appear on the displayed image dark stripes
[0004] In addition, in some cases, the dark stripes are very weak, and it is difficult for users to judge with the naked eye. Under the operating standards that require high image quality, this situation is very annoying

Method used

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  • Method for eliminating scintilltion of moving picture
  • Method for eliminating scintilltion of moving picture
  • Method for eliminating scintilltion of moving picture

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Embodiment Construction

[0026] In the following description, well-known functions or structures will not be described in detail to avoid unnecessary confusion with the content of the present invention.

[0027] The present invention analyzes the continuous digital images captured by the camera as an example.

[0028] The video stream captured from the camera is composed of frame-by-frame still images, and each frame of still images in this method is an uncompressed 24bits RGB image. The storage structure of image pixels is as follows figure 1 As shown (set image size as M*N, unit: pixel):

[0029] The storage of pixels follows the principle of left-to-right and bottom-up. For a 24bits RGB image, the pixel in the lower left corner is stored at the front of the file data area, and the pixel in the upper right corner is stored at the end of the file. Each pixel occupies 3 bytes, and its B, G, and R channel values ​​are stored sequentially, from 0 to 255. These three channels represent the three opti...

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Abstract

The invented method is in particular for eliminating rolled dark fringes occurred in procedure of displaying digital image when parameter setting of pickup camera is not suited to external light source. First, states of pickup camera are switched to different parameter settings in sequence, and whether there are dark fringes appeared on image is determined. Then, based on instance of appearing rolled dark fringes under different parameter settings of pickup camera, type of light source at that time is determined. Finally, parameters of pick-up head are modified to suite to ambient light in order to eliminate dark fringes. In the invention, PC completes most of operation, providing high estimating accuracy and low calculated amount.

Description

technical field [0001] The invention relates to a method for eliminating flicker in a moving picture, in particular to a method for eliminating rolling dark stripes that appear when the parameter setting of the camera device is not compatible with the external light source during the digital image display process. Background technique [0002] When the digital camera device is working, in order to adapt to artificial light sources of different frequencies and outdoor natural light, some parameters of the camera device must be set accordingly, and one of the more important parameters is the automatic exposure time of the camera device. When the digital camera is working, it always adjusts the exposure time continuously according to the light and shade changes of the surrounding environment. For unused ambient light sources, the initial value of the exposure time and the step size of each adjustment will be different. However, in the process of actual use, there is often a mis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B7/00H04N5/225H04N5/232
Inventor 俞青赵原
Owner VIMICRO CORP
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