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Equipment and method for processing false color of image

A pseudo-color and image technology, applied in the field of equipment for processing image pseudo-color, can solve the problems of image edge pseudo-color and image color distortion, and achieve the effect of removing edge pseudo-color

Active Publication Date: 2013-04-10
BYD SEMICON CO LTD
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  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problem of false color at the edge of the image caused by the color distortion of the image caused by the lens, the invention provides a device for processing false color of the image;

Method used

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  • Equipment and method for processing false color of image
  • Equipment and method for processing false color of image
  • Equipment and method for processing false color of image

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Experimental program
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Embodiment 2

[0055] In Embodiment 2, the modulation factor value calculation module 24 and the color difference signal modulation module 25 further include: a second modulation factor value calculation module 26, which calculates the modulation factor value GAIN_C and the edge pixel maximum brightness value Y_MAX to obtain the reflected modulation degree of the second modulation factor value GAIN_C1.

[0056] The edge pixel maximum brightness value calculation module 27 calculates the edge pixel maximum brightness value Y_MAX based on a 3×3 image matrix, such as image 3 As shown, the calculation method uses the brightness signal values ​​Y11, Y12, Y13, Y21, Y22, Y23, Y31, Y32, Y33 of the pixel point (target pixel point) whose edge intensity is to be calculated and the surrounding eight nearby pixel points , the maximum brightness value Y_MAX of edge pixels is calculated using the following formula:

[0057] Y_MAX=max([Y11, Y12, Y13, Y21, Y22, Y23, Y31, Y32, Y33]); (5)

[0058] Among the...

Embodiment 3

[0071] The method for processing image pseudo-color will be further described in detail below, such as Figure 4 Shown, as embodiment 3 of the method for processing image false color, comprise the steps:

[0072] Step S41: establish an n×n image matrix with the target pixel as the center pixel, where n=2k+1, k is an integer greater than or equal to 1;

[0073] Step S42: Calculate the image brightness signal value Y to obtain the edge intensity value VAL_EDGE_t reflecting the edge contrast of the target pixel point;

[0074] Step S43: Calculate the edge intensity value VAL_EDGE_t to obtain the edge factor value VAL_EDGE reflecting the degree of false color of the image;

[0075] Step S44: Calculate the edge factor value VAL_EDGE to obtain the modulation factor value GAIN_C reflecting the degree of modulation;

[0076] Step S45: Use the received modulation factor value to correct the color difference signal values ​​CB_IN and CR_IN of the target pixel.

[0077] In Embodiment ...

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Abstract

The invention provides equipment and method for processing the false color of an image. The equipment comprises a matrix building module, an edge strength value computing module, an edge factor value computing module, a modulation factor value computing module and a color difference signal modulating module, wherein the matrix building module builds an n*n image matrix by taking an object pixel point as a center pixel point; the edge strength value computing module computes an image brightness signal value based on an image array to obtain an edge strength value which reflects the edge contrast of the object pixel point; the edge factor value computing module computes the edge strength value to obtain an edge factor value which reflects the degree of the false color of the image; the modulation factor value computing module computes the edge factor value to obtain a modulation factor value which reflects the modulating degree; and the color difference signal modulating module correctsa color difference signal of the object pixel point by the received modulation factor value. The invention further provides the method for processing the false color of the image based on the method.The invention can automatically correct the image according to the edge information of the image, effectively removes the false color caused by a lens, generates a natural image, and solves the problem of the false color of the image caused by the lens.

Description

technical field [0001] The invention belongs to the field of digital image processing, and relates to a device and method for processing image pseudo-color. Background technique [0002] Different shooting devices have different optical lenses, and different optical lenses have different optical aberrations, so images acquired through different shooting devices sometimes have some serious distortions. Among them, color distortion is a relatively common problem. This color distortion is mainly reflected in the edges of the image with large changes in light and dark, and the image at the brighter edge will appear blue or purple. [0003] The fundamental solution to this type of problem is to improve the lens design to reduce or eliminate the impact of optical aberration on the image. However, this puts relatively high requirements on the design and manufacture of the lens, which is not easy to realize and the cost is high. This requires a low-cost device or method capable of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04H04N9/64
Inventor 胡文阁付璟军彭茂
Owner BYD SEMICON CO LTD