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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: 2007-07-04
ALTEK CORP
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  • Abstract
  • Description
  • Claims
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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

Method used

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

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Embodiment Construction

[0035] 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.

[0036] Please refer to Fig. 2, 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, with a green, A row of blue pixels (G, B) and a row of red and green pixels (R, G) are arranged in sequence to form an arr...

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Abstract

The invention relates to a method for rebuilding color information, wherein it comprises that: via the position weight of pixels near each red / blue pixel, calculating out the color signal difference at horizontal and vertical directions; then via said difference, distributing weight values reversed; averaging the nearby two green pixels vertically and horizontally to obtain two average values; multiplying two average values with relative direction weight values, summing them into the green information of each blue / green pixel; then using dual-linear interpolation method to compensate the lost red and blue elements; using one middle-value selector to correct aberration. The invention has high accuracy, 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 minimum unit of forming a picture on the image sensor array is a photoelectric body, usually called a pixel (pixel). Since the photoelectric body itself only responds to the intensity of light and has no ability to interpret the color of light, it is necessary to add red (R), green (G), and blue (B) in front of each photoelectric body of the image sensor array. Filters or optical filters of the three primary colors are use...

Claims

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Application Information

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IPC IPC(8): H04N9/04G06T3/40
Inventor 郭俊廷
Owner ALTEK CORP
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