Hough算法检测矩形的长，并给出矩形的四个顶点坐标，极坐标中角度精度为1度。-Hough algorithm Detect long rectangle, and give the four vertices of rectangular coordinates, polar coordinates in the perspective of an accuracy of 1 degree.

实现霍夫变换，进行圆周滤波，二值化后进行木匾检测，并将目标通过矩形框显示-Realize the hough transform, circular filtering, binarization after detection of wooden plaque, and will target through rectangular box shows

The problem of detecting rectangular structures in images arises in many applications, building extraction in aerial images to particle detection in cryo-electron microscopy. -The problem of detecting rectangular structures in images arises in many