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Image processing method, image processing device and imaging device

An image processing and pixel point technology, applied in the field of image processing, can solve problems such as crosstalk and wrong colors

Inactive Publication Date: 2013-02-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The inventors of this application have discovered in the long-term research and development process that the fluctuation of the color component where the current pixel is located in the neighborhood will be transmitted to the other two interpolated color components, forming wrong color crosstalk

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  • Image processing method, image processing device and imaging device
  • Image processing method, image processing device and imaging device
  • Image processing method, image processing device and imaging device

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Embodiment Construction

[0038] With a normal, traditional camera, the optics put the captured light onto film, which is then exposed and developed through a chemical process. In a digital camera system, the light still passes through the optical system composed of the lens and lens barrel, the difference is that the light hits the flat digital sensor composed of rows and columns. A sensor chip has millions or even tens of millions of pixels. The sensor itself is a monochrome electronic component that can only sense the brightness of light, but not color information. Therefore, before the light hits the sensor chip, it must first Through a color filter array (CFA, Color Filter Array), the corresponding colored light is transmitted, and the light of other colors is filtered out. In order to obtain a full-color image, the intensity of the three color components must be measured at each pixel position. , but in order to reduce the cost and volume of digital cameras, manufacturers usually use monolithic i...

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Abstract

The invention discloses an image processing method, an image processing device and an imaging device. The image processing method comprises the following steps of: acquiring a first green component value and a first red component value or a first blue component value, a first minimum gradient value in the horizontal vertical direction, a second minimum gradient value in the oblique direction, a threshold value of the green component and threshold values of the red component or the blue component of the current pixel point by using an interpolation algorithm; acquiring a modification value of the green component of the current pixel point and a modification value of the red component or the blue component; and acquiring a second green component value and a second red component value or a second blue component value of the current pixel point. According to the method, the crosstalk on other two interpolated color components by the color component in which the current pixel point is located can be reduced.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method, device and imaging equipment. Background technique [0002] When the photosensitive chip of the camera acquires each pixel of the raw (RAW) image, it can only obtain one of the three color components of red, green and blue (R / G / B) for each pixel. To obtain a bitmap (BMP) image, the values ​​of the other two color components on the pixel need to be estimated by using the correlation between the current pixel and the three color components of the surrounding pixels in the RAW image. A complete color BMP image can be obtained by performing similar operations on each pixel in the RAW image. This process is called interpolation or demosaicing. [0003] The simplest method adopted in the above-mentioned processing process is the bilinear interpolation algorithm, which processes R, G, and B independently, without considering the correlation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04H04N23/12
CPCH04N9/04G06T3/4015H04N23/843H04N25/134G06T2207/10024G06T2207/20172H04N9/646
Inventor 李水平陈海
Owner HUAWEI TECH CO LTD
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