Application of the slicing technique to extract the contour feature line
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This paper applies the slicing technique to extract the contour feature line. The sliced data are projected on the plane to obtain the feature line of the slice profile by grid computing, which can directly establish a three-dimensional model. Due to redundancy and the uneven distribution of the point cloud, it is difficult to determine the slice thickness, causing projection error and disconnection of the contour line. In this paper, the projection error and efficiency of calculation are improved with twice data layer compression to extract the point cloud data generated by the contour. In the contour feature extraction, the line segment code is established using its structure to calculate the contour boundary by connectivity judgment. Through experimental comparison, the algorithm using the line segment to determine the boundary is more effective and robust than the eight neighborhood algorithm.
KeywordsSlicing technique Feature line Line segment structure Connectivity judgment
This work was financially supported by the Youth Science Foundation of Jiangxi Province (20142BAB217032) and the Science and Technology Department of Jiangxi Province (20142BBF60011). We sincerely acknowledge professor Gong and professor Yang from Wuhan University, and professor Cheng from Tongji University for providing technical support and data in this work. I would like to express my deepest gratitude to all those whose kindness and advice have made this work possible.
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