三维霍夫空间 [英] Three Dimensional Hough Space

问题描述

搜索图像中的圆的半径和中心坐标。已经尝试过2D霍夫变换。但我的圆半径也是未知的。我仍然是一个初学者，计算机视觉，所以需要公会线，并帮助实现三维空间。

Im searching for radius and the center coordinates of circle in a image. have already tried 2D Hough transform. but my circle radius is also a unknown. Im still a beginner to Computer vision so need guild lines and help for implementing three dimensional hough space.

推荐答案

2D霍夫空间，但带有一个附加参数。伪代码如下所示：

You implement it just like 2D Hough space, but with an additional parameter. Pseudo code would look like this:

for each (x,y) in image
     for each test_radius in [min_radius .. max_radius]
         for each point (tx,ty) in the circle with radius test_radius around (x,y)
             HoughSpace(tx,ty,test_radius) += image(x,y)

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