使用OpenCV实现Halcon算法（1）亚像素提取边缘，Sub-Pixel Edge Detector

整个项目，我重新用opencv包装了，项目地址： https://github.com/fcqing/sub-pixel-edge-detect https://github.com/songyuncen/EdgesSubPix 论文《A Sub-Pixel Edge Detector: an Implementation of theCanny/Devernay Algorithm》提出了一种基

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