文件名称:
kht_sandbox-1.0.2-source
开发工具:
文件大小: 6mb
下载次数: 0
上传时间: 2016-01-08
详细说明:kht_sandbox包含了KHT(Kernel-based Hough transform)算法的C实现和C及matlab使用示例。
KHT算法能极大的加快霍夫变换的速度,让霍夫线检测能达到近乎实时的性能。经过实测,在我电脑上(i3-2310M)对于2560x1920的图像找出直线大约需要70ms,对比下一直使用的OpenCV的标准算法大约需要200ms,release版本只需要20ms,OpenCV release版本需要110ms。
Fernandes and Oliveira1suggested an improved voting scheme for the Hough transform that allows a software implementation to achieve real-time performance even on relatively large images (e.g., 1280×960). The Kernel-based Hough transform uses the same (r,\theta ) parameterization proposed by Duda and Hart but operates on clusters of approximately collinear pixels. For each cluster, votes are cast using an oriented elliptical-Gaussian kernel that models the uncertainty associated with the best-fitting line with respect to the corresponding cluster. The approach not only significantly improves the performance of the voting scheme, but also produces a much cleaner accumulator and makes the transform more robust to the detection of spurious lines
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