Image processing device, image correction method and system, and fixed point searching method and system

Abstract

The present invention provides an image processing device, an image correction method and system, and a fixed point searching method and system. The grids with the first color in a black and white chequer image is subjected to corrosion with preset proportion; all the grids with the first color obtained in the independent state and the image coordinates of the central points of the ligatures of the opposite vertexes of the adjacent grids with the first color in the chequer image after corrosion are obtained; and the center points matching the preset fixed points are subjected to the statistics to obtain the image coordinates of the corresponding fixed points. Many times of corrosion can be repeatedly performed, the searching steps of the fixed points are executed, the searching results of each time are fused, the position of the vertexes of single grid corresponding to the position of the opposite vertexes of the grids with the first color is easier to perform accurate location, and through the mode of fusing the searching results for many times, the vertexes of the grids can be obtained as many as possible. The image processing device, the image correction method and system, and the fixed point searching method and system can rapidly and accurately search the preset fixed points and reduce the interference of the modes such as the light and the installation positions of the camera so as to accurately and effectively correct the image shot by the camera.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to an image processing device, image correction, calibration point search method and system. Background technique [0002] In recent years, the advanced driving assistance system based on the surround view camera (also called the surround view ADAS system) has been accepted by more and more users. By installing wide-angle cameras on the front, rear, left, and right sides of the car, the images around the car body are collected, and after algorithm analysis and processing, the driver is provided with various advanced driving assistance functions including panoramic parking assistance, lane departure warning, and blind spot vehicle detection. The active safety of automobile is of great significance. [0003] Before starting to use the surround view ADAS system, it is necessary to establish the correspondence between image coordinates and physical coordinates. The establishmen...

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an image processing device, image correction, and calibration point search method and system, which are used to solve the problem that the image calibration point cannot be quickly and accurately found in the prior art

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