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### 刀具轮廓亚像素精度阈值分割算法研究

• 出版日期:2015-12-31 发布日期:2015-05-06

### Research on Sub-Pixel Precise Thresholding for Tool Contour Extraction

• Online:2015-12-31 Published:2015-05-06

Abstract: Abstract: Extracting sub-pixel precise contour is an important step for obtaining the geometric parameter of a tool precisely. A simple and effective method is studied in this paper, which extracts the contour based on gray value threshold operation to detect edge with pixel accuracy firstly and the bilinear interpolation to subdivide the edge simultaneously. At last, an experiment is conducted to compare and analyze the different features of contours extracted by this algorithm and another two algorithms based on Canny and Sobel. The result shows that it is much faster for sub-pixel precise thresholding than the others in extracting the contour of a high contrast image accurately.