Method for eliminating dead pixels in RAW-RGB image

A technology of dead pixels in images, applied in the field of image processing, can solve the problems of insufficient real-time performance, poor processing effect of dead pixels, and high resource consumption.

Active Publication Date: 2017-10-13
思特威(上海)电子科技股份有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

Some existing bad pixel detection algorithms either have a relatively high false detection rate of bad pixels in the image, or the processing effect of bad pixels is not good,

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  • Method for eliminating dead pixels in RAW-RGB image
  • Method for eliminating dead pixels in RAW-RGB image
  • Method for eliminating dead pixels in RAW-RGB image

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Embodiment Construction

[0104] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0105] In a RAW-RGB image, a single pixel (pixel) only senses one color, that is, for each pixel in the RAW-RGB image, it can only be R (red), G (green) and B (blue). any one of color), such as figure 1 as shown, figure 1 It is some pixels in a RAW-RGB image. Depend on figure 1 It can be seen that in the image of RAW-RGB format, R pixels and B pixels are arranged in alternate rows, for example, for figure 1 In terms of the first two rows of 16 pixels in the first row, there are only B pixels and G pixels in th...

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Abstract

The invention provides a method for eliminating dead pixels in an RAW-RGB image, which comprises the steps of converting R-pixels and B-pixels in an RAW-RGB image into G-pixels so as to convert the RAW-RGB image into a G-domain image, performing dead pixel judgment in the G-domain image, and then carrying out dead pixel elimination and restoration in the G-domain image. In the above process, the method can be implemented by only utilizing data of the current line where a dead pixel is located and a previous line, so that the volume of data required in the current technical scheme is greatly reduced, the time of data processing is reduced, and the possibility of real-time processing is increased. Meanwhile, the required hardware area is reduced, and the consumption of resources is lowered.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method for eliminating dead pixels in RAW-RGB images. Background technique [0002] The image sensor contains a color filter array (color filter array), that is, a Bayer filter, so that the light collected at each point on the sensor can only collect light of one wavelength after being filtered by the Bayer filter, and the light collected at each point on the sensor passes through The light of the corresponding color passing through the filtering process is red, blue or green. The photosensitive array in the image sensor converts the collected light signal into an electrical signal; the image sensor then converts the electrical signal into a digital signal, and the converted digital signal is the pixel value corresponding to each point of light collected on the current sensor. The image sensor composes a corresponding original image through the pixels corresponding to the array...

Claims

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Application Information

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IPC IPC(8): G06T5/00
CPCG06T5/005G06T2207/10024
Inventor 王毫杰
Owner 思特威(上海)电子科技股份有限公司
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