Reconstruction method of picture-element color information

A color information and pixel technology, applied in the field of pixel color information reconstruction, can solve problems such as false color and color distortion

Inactive Publication Date: 2009-11-11
ALTEK CORP
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Problems solved by technology

[0008] Another object of the present invention is to provide a pixel color information reconstruction method to achieve high resolution and uniform color effect, so as to truly improve the known interpolation system prone to false color and color distortion problems

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  • Reconstruction method of picture-element color information
  • Reconstruction method of picture-element color information
  • Reconstruction method of picture-element color information

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Embodiment Construction

[0031] In the present invention, before reconstructing a pixel by interpolation method, the weight ratio is distributed according to the position distance of the surrounding pixels to calculate the color signal difference in the horizontal and vertical directions, so as to distribute the weight value according to the inverse proportion of the color signal difference, and then the horizontal The green elements obtained in the vertical direction and the vertical direction are multiplied by the weight value of the direction to which they belong, and the weighted sum obtained becomes the interpolation value of the green element in the red / blue pixel.

[0032] see figure 2 As shown, the image pixel array 20 produced after the light passes through a color filter is composed of a plurality of pixels 22, including red pixels 24, blue pixels 26 and green pixels 28, and a green and blue pixel (G , B) and a row of red and green pixels (R, G) are arranged in sequence to form an array, an...

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Abstract

The present invention provides a method for reconstructing pixel color information, which first assigns a weight ratio according to the distance of the pixels around each red / blue pixel, and calculates the color signal difference in the horizontal and vertical directions, and then calculates the color signal difference according to the signal difference. The weight value is assigned in inverse proportion to the weight value, and the two green pixel values ​​adjacent to the pixel to be reconstructed are averaged along the horizontal and vertical directions respectively to obtain two average values, and then the two average values ​​are multiplied by the weight values ​​of their respective directions and then added together, The resulting weighted sum becomes the green element information in each red / blue pixel; then bilinear interpolation is used to complement the missing red and blue elements of other pixels, and then corrected by a median selector chromatic aberration. Therefore, the reconstructed color information of the present invention has the advantage of high accuracy, and can achieve the effect of high resolution and uniform color.

Description

technical field [0001] The present invention relates to a method for reconstructing pixel color, in particular to a method for reconstructing pixel color information adding weight and color difference correction to provide accurate color interpolation value. Background technique [0002] With the popularity of audio-visual multimedia and the successive introduction of digital imaging equipment, users have increasingly strict requirements on image color. Wherein, the image sensor array is a device for recording image signals in digital photography, and the smallest unit forming a frame on the image sensor array is a photoelectric body, usually called a pixel. Since the photoelectric body itself only responds to the intensity of light and has no ability to interpret the color of light, red (R), green (G), and blue (B) must be added in front of each photoelectric body of the image sensor array. The primary color filters or optical filters allow only red light, green light, and...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04G06T3/40
Inventor 郭俊廷
Owner ALTEK CORP
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