Method and device for enhancing image edge based on RGB (Red, Green and Blue) format of Bayer domain

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.