在获取螺纹图像的基础上，通过边缘检测算法获取螺纹轴剖面外轮廓的边缘。
On the basis of thread image acquisition, the edge of axial-section contour threads was obtained through using the edge detection algorithm.
对灰度图像、二值图像、边缘轮廓曲线的角点检测算法进行综述，分析了相关的算法，并对各种检测算法给出了评价。
This paper attempt to summarize corner detection method in gray-level image, binary image and curve of edge, also to compare with many property of corner detection algorithm.
提出一种用迭代算法求图像分割最佳阈值和运用数学形态学的腐蚀算法实现轮廓提取相结合的细胞图像边缘精确检测算法，并给出仿真实例。
A new accurate edge detection method obtaining the best threshold of image segmentation based on iterative arithmetic and abstracting edge by eroded arithmetic of mat.
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