Hough变换用于提取直线

Hough transform is a feature extraction technique in image processing, which identifies objects of specific geometric shapes through a voting mechanism. The process operates within a parameter space to determine the set of points corresponding to the detected shape as the result of Hough transform. Classic Hough transform is primarily employed for detecting straight lines in images, while its application has been expanded to recognize objects with arbitrary shapes, with circles and ellipses being the most commonly addressed forms.

霍夫变换通过利用两个坐标空间之间的变换关系，在一个空间中具有相同形状的曲线或直线将会被映射到另一个坐标空间中的一个点上而产生