Lost color vector reconstruction method and device

A color value and component technology, which is applied in image data processing, instrumentation, calculation, etc., can solve the problem of not being able to effectively reflect the edge of the image, and achieve the effect of reducing edge blur and improving loss

Inactive Publication Date: 2010-01-20
MEDIATEK INC
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Problems solved by technology

[0007] Based on the above reasons, it can be known that the current color value reconstruction method is still unable to effectively reflect the image edges in all directions, so there is still considerable room for improvement in the reconstructed color error, and how to improve the above existing methods in this respect The lack of the above, for the development of the main purpose of the present invention

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  • Lost color vector reconstruction method and device
  • Lost color vector reconstruction method and device
  • Lost color vector reconstruction method and device

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Embodiment Construction

[0024] see figure 2 , which is a schematic diagram of a Bayer pattern of 5×5 pixels with a red pixel as the center. For the convenience of the following description, each pixel is numbered P1-P25.

[0025] Since the central point P13 only captures the color value R13 of the red component during the actual color capture process, but fails to capture the color values ​​G13 and B13 of the green and blue components, this project provides the following method to reconstruct G13 and B13 of P13, and for the convenience of description, first explain how to rebuild G13. In general, when the lost color value components at point P13 are reconstructed, the lost color value components from P1 to P12 have all been reconstructed.

[0026] The main spirit of the present invention is to use a color difference similar theory to calculate, and its main concept is that the difference between the two color value components at a certain point in the area will be equal to the difference between th...

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Abstract

The invention discloses a method for reestablishing loss chromatic value component and a device therefor, which can improve definition of edge images whose chromatic value is reestablished. The invention is applied to a pixel point to be reestablished in a Bel image pixel point matrix, comprises following steps: according to acquired isochromatic value component on a first group of pixel points which surround the pixel point to be reestablished in the image pixel point matrix, calculating the smallest chromatic difference change estimated value Cv in the vertical direction and the smallest chromatic difference change estimated value Ch in the horizontal direction, wherein besides pixel points which are in the same line or the same row with the pixel point to be reestablished, the first group of pixel points also comprises other pixel points; according to the smallest chromatic difference change estimated value Cv in the vertical direction and the smallest chromatic difference change estimated value Ch in the horizontal direction, determining the second chromatic value component. Moreover, the invention also provides a device for reestablishing loss chromatic value component.

Description

technical field [0001] The invention relates to a method for reconstructing lost color value components, in particular to a method for reconstructing lost color value components applied to a pixel to be reconstructed in a Bell pattern pixel matrix. In addition, it also relates to a lost color value component reconstruction device. Background technique [0002] In today's camera market, digital cameras have almost replaced traditional cameras and become the mainstream. The biggest difference is that traditional cameras use photosensitive film to sense images, while digital cameras use charge coupled devices (Charge Coupled Devices, CCD for short) or complementary metal-oxide-semiconductor transistor sensor (CMOS sensor) to sense images. However, since the CCD or CMOS sensor can only sense the intensity of light, it cannot sense the color change. Therefore, when the digital camera needs to have the ability of color image sensing, the manufacturer must add a color filter (Col...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04G06T3/40
Inventor 彭起凤赖秋原
Owner MEDIATEK INC
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