梯度Hough变换在圆检测中的应用

The Application of Grads Hough Transformation in Circle Detection

介绍了一种有效的利用图像梯度信息的Hough变换方法——梯度Hough变换(GHT).详细讨论了梯度的求取、GHT的详细算法,讨论了GHT算法和直接累加Hough变换算法的区别及改进之处.

One kind of efficient Hough Transformation （HT）, which uses the grads information of image-Grads Hough Transformation（GHT）, is introduced in this article. The method of computing grads and detailed algorithm of GHT are given out. Finally, the connection and discrimination between GHT and DHT（Direct HT） are discussed.