Method and device for enhancing image edge based on RGB (Red, Green and Blue) format of Bayer domain
An image edge and edge enhancement technology, applied in the field of image processing, can solve the problems of consuming hardware resources, high cost, complicated control, etc., and achieve the effect of reducing cost and small hardware consumption.
Active Publication Date: 2011-08-17
BRIGATES MICROELECTRONICS KUNSHAN
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[0006] It can be seen that the image edge enhancement method applied to the Bayer domain RGB format in the prior art needs to convert the image format of the Bayer domain RGB format into a standard RGB format image and store it. The conversion and storage of this image format consume hardware. resources, and the control is more complicated and the cost is relatively high
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[0028] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0029] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways than those described here, so the present invention is not limited by the specific embodiments disclosed below.
[0030] As mentioned in the background technology section, the image edge enhancement methods applied to the Bayer domain RGB format in the prior art need to convert the image in the Bayer domain RGB format into an image in the standard RGB format and store it. Conversion and storage consume hardware resources, and the control is relatively complicated and the cost is relatively high.
[0031] In view of the above problems, the inventors o...
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The invention relates to a method and device for enhancing an image edge based on an RGB (Red, Green and Blue) format of a Bayer domain. The method for enhancing the image edge based on the RGB (Red, Green and Blue) format of the Bayer domain provided by the invention comprises the following steps: obtaining target pixel points which need to be subjected to edge enhancement processing and the edge direction of the target pixel points; carrying out the interpolation of complementary colors on the adjacent pixel points in the edge direction of the target pixel points and determining the grey values of the adjacent pixel points; carrying out the interpolation of the complementary colors on the target pixel points and determining the grey values of the target pixel points; determining the enhancement polarization amount based on the target pixel points and the grey values of the adjacent pixel points in the edge direction of the target pixel points; and overlapping the enhancement polarization amount on the target pixel points. According to the edge enhancement processing method based on the RGB image of the Bayer domain, the standard RGB data of the pixel points around the enhanced pixel points do not need to be stored, and the method has the advantage of small hardware consumption and reduced image processing cost.
Description
technical field [0001] The present invention relates to the field of image processing, and more specifically, the present invention relates to an image edge enhancement method and device based on the Bayer RGB format. Background technique [0002] In the CMOS image sensor, due to the non-ideal factors of the optical lens, the crosstalk of the microlens and the substrate circuit, the output image of the CMOS image sensor is greatly blurred, and the blurring of the image is especially reflected in the degradation of the edge of the image. . Image edge refers to discontinuous color block changes in the image. The so-called image edge degradation means that the original large gray value gradient at the junction of the color block and the color block is weakened, and the originally obvious color block and color block boundary becomes Indistinct. [0003] Taking the one-dimensional step edge as an example, Figure 1(a) is an ideal step edge model, while Figure 1(b) is a degenerat...
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IPC IPC(8): H04N9/04H04N9/64
Inventor 任晓慧曹庆红董德兴
Owner BRIGATES MICROELECTRONICS KUNSHAN