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Lost color vector reconstruction method and device

A color value and component technology, applied in image data processing, instruments, calculations, etc., can solve problems such as the inability to effectively reflect image edges, and achieve the effect of reducing edge blur and improving missing.

Active Publication Date: 2008-03-26
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] Please refer to FIG. 2, which is a schematic diagram of a Bayer pattern of 5×5 pixels centered on a red pixel. For the convenience of the following description, each pixel is numbered P1 to P25.

[0025] Since the center point P13 in the actual color capture process, only the color value R13 of the red component is captured, but the color values ​​G13, B13 of the green and blue components cannot be captured, so this project provides the following methods to reconstruct G13 and B13 of P13, and for the convenience of description, first explain how to rebuild G13. In general, when reconstructing the missing color value components at point P13, all the missing color value components from P1 to P12 have been reconstructed.

[0026] The main spirit of the present invention is to use a similar color difference theory to perform calculations. The main idea is that the difference between the two color value components at a certain point in the area will be equal to the difference be...

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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 a missing color value component, in particular to a method for reconstructing a missing color value component applied to a pixel to be reconstructed in a pixel matrix of a Bell pattern. It also relates to a device for reconstructing missing color value components. Background technique [0002] In the current 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 Device, Referred to as CCD) or complementary MOS sensor (CMOS sensor) to sense images. However, because the charge-coupled device or the complementary MOSFET sensor can only sense the intensity of light, it cannot sense the change of color. Therefore, when a digital camera is capable of color image sensing, the manufacturer must add a color filter (C...

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Application Information

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IPC IPC(8): H04N9/04G06T3/40
Inventor 彭起凤赖秋原
Owner MEDIATEK INC
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