Method for correcting deformity and identifying image of go notation

Abstract

The invention relates to a method for correcting deformity and identifying an image of a go notation in real time. The method includes the following steps: firstly, conducting the deformity correction on the image: fixing the positions of a go board and a camera, determining the coordinates of three hundred and sixty one piece placing points on the go notation image acquired by the camera and determining the size of a rectangle frame to be calculated in the identification of pieces; and secondly, the identifying the go pieces: acquiring one frame of grayscale image as foreground, conducting differential operation with a background image to obtain a difference image, calculating parameters such as the grayscale average value of an effective pixel in the rectangle frame of each piece placing point, the quantity of the effective pixels, and the like one by one in the difference image according to the coordinates of the piece placing points, comparing the parameters with a set threshold, then detecting go notation data such as the colors and the positions of the pieces as well as piece taking, piece falling and the like according to a current party placing the pieces and go board information, and then updating the background image to the foreground image. The method adopts an algorithm which is concise, correct and efficient, can adapt to a certain extent of illumination change and especially can be applicable to the identification of a go notation in real time under an embedded system.

Description

technical field [0001] The invention relates to a method for correcting distortion and identifying the image of the Go record. It uses the image processing technology to correct the deformity and identify the Go record image in real time. Background technique [0002] The distortion correction of the camera and the image matching technology based on the gray value are the important contents of computer vision and digital image processing, and they are two technical problems that need to be solved in the recognition of chess record images. [0003] The distortion correction of the camera is to determine the relationship between the three-dimensional geometric position of a certain point on the surface of the space object and the corresponding point in the image. The parameters of the distortion correction must generally be obtained through more complicated experiments and calculations, and each camera collected All images are deformed corrected. Faced with such a large amoun...

AI Technical Summary

Problems solved by technology

Faced with such a large amount of calculation, embedded systems with limited capabilities cannot complete real-time image processing

[0004] Algorithms in grayscale-based image matching technology generally require a large amount of calculations, and cannot meet the real-time image processing requirements of embedded systems if appropriate improvements are not made and other known judgment conditions are referenced.

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