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An interpolation method and device for color filter array

A filter array and interpolation method technology, applied in the field of color filter array interpolation, can solve the problems of false color, inconsistent image color and brightness, and blur.

Inactive Publication Date: 2007-05-16
VIMICRO CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although the amount of calculation is relatively small in this way, the color and brightness of the generated image are inconsistent, blurred, and produce false colors.

Method used

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  • An interpolation method and device for color filter array
  • An interpolation method and device for color filter array
  • An interpolation method and device for color filter array

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Embodiment Construction

[0137] The basic idea of ​​the present invention is to generate horizontal interpolation image and vertical interpolation image at the same time, and generate the brightness distance and chromaticity distance value corresponding to each pixel point, and finally output the RGB value of each pixel point according to the minimum criterion of brightness distance and chromaticity distance , to generate the final image.

[0138] The present invention will be described in detail below with reference to the drawings and embodiments.

[0139] Fig. 1 is the flow chart of the color filter array interpolation method of the present embodiment, comprises the following steps:

[0140] Step 1: Calculate the horizontal interpolation and vertical interpolation of the RGB components of the pixel point (m, n); this step can be subdivided into the following sub-steps:

[0141] Step 1A: Get R m，n Horizontal interpolation GH of the G component of the pixel m，n and vertically interpolated GV m，n ...

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Abstract

The related color filter array interpolation device comprises: a horizontal / vertical interpolation unit to calculate RGB component interpolation of pixel point (m, n) according to original measured data, a horizontal / vertical brightness and color distance calculation unit to calculate the brightness and color distances of point (m, n) and its near point, a distance comparison unit to determine the direction with less distance, and a selective output unit to output the interpolation with less distance as final value. This invention is benefit to obtain clear image.

Description

technical field [0001] The invention relates to a color filter array interpolation method, in particular to a Bayer mode color filter array interpolation method. Background technique [0002] The optical sensor of the digital image capture device usually adopts CCD (Charge-coupled device, charge-coupled device) or CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor) technology, which consists of photosensitive elements (CCD or CMOS) consists of a two-dimensional matrix, while CCD or CMOS sensors can only sense light brightness, not color information. Therefore, a color filter array (Color Filtered Array, CFA) must be used to ensure that each sensor pixel receives only one color of light: usually one of the three colors red, green, and blue. The color filter array can use different modes, the most commonly used is the color filter array of Bayer mode. Bayer patterns alternate a set of red and green filters and a set of green and blue filte...

Claims

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Application Information

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IPC IPC(8): H04N9/04H04N9/77
Inventor 沈操
Owner VIMICRO CORP
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