In the process of image registration,it is common for the image to have a certain angle rotation,which will cause difficulties in subsequent visual tasks.At the same time,since the circular target image does not have obvious outer contour positioning information,the detection difficulty increases when it is rotated at a certain angle.In this paper,a variety of circular target images are used as research objects,and the common circle positioning algorithms and rotation angle de-tection algorithms are studied.The experimental results show that the error of circle positioning by the least squares method is the smallest,the rotation angle detection algorithm based on Zernike moment can achieve high detection accuracy while taking into account speed.
关键词
圆形目标图像/圆定位/图像旋转/归一化旋转/Zernike矩
Key words
circular target image/circle positioning/Image rotation/normalized rotation/Zernike moment
维普
万方数据