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当图像包含直边、圆形对象或需要可靠检测的重复几何结构时，霍夫变换非常有用。常见的例子包括道路车道、板材边界、管道开口、硬币、仪表和机器零件，其中形状证据比纹理更重要。
使用霍夫变换检测直线和圆，以进行车道检测、文档边界提取、工业检查和几何形状分析。
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The Hough Transform is a technique for detecting geometric shapes (lines, circles) in images. It transforms edge points into parameter space and finds peaks corresponding to shape instances.
Standard Hough outputs infinite lines (rho, theta). Probabilistic Hough outputs finite line segments with start/end points and is generally faster and more practical.