Multi-point Laser Automatic Oblique Angle Shooting Correction System Based on Image Processing

When we take photos of object, due to the limitations of shooting location and direction, the images often appear distorted. This paper proposes multi-point laser automatic correction method and the method includes two correction projects: multi-point laser automatic correction method based on coordinate and multi-point laser automatic correction method based on angle. Unlike traditional method of manual annotation, this paper adopts laser dotting and ranging technology instead of manual annotation to calculate the corresponding coordinate of each laser point coordinate on correction image, and then calculates correction matrix by perspective transformation, further uses correction matrix to correct the distortion image. The results of experiments show that multi-point laser automatic correction method is simple and accurate, it effectively avoid the loss of edge information, it can automatically correct the image at real time and improve the accuracy of correction.