在线手绘平面立体投影图的端点融合

发布时间：2018-05-12 11:57

本文选题：端点融合 + 在线手绘　；参考：《计算机辅助设计与图形学学报》2017年03期

【摘要】：端点融合是手绘草图规整过程中尤为重要的一个环节,其对于草图的最终规整结果也影响甚大.针对现有手绘平面立体投影图的端点融合方法的不足,提出一种基于角度直方图的融合方法.首先根据拟合后草图笔画的角度信息得到相应的角度直方图,并对笔画进行平行处理;然后利用容差圆判定聚类笔画,得到若干组聚类端点;再根据"坐标系-权重准则"确定各组聚类端点的融合顺序;最终在保证笔画平行关系的前提下,对各聚类端点按照其相应的权重顺序进行融合处理.通过自主开发的FSR_EF原型系统对文中方法予以验证并与现有方法进行比较,结果证明,该方法可以有效地解决现有端点融合方法存在的问题,也达到保留用户最初输入意图的目的,同时为进一步实现3D物体投影图的重构工作奠定了基础.
[Abstract]:Endpoint fusion is a very important step in the process of hand-drawn sketch regularization, and it also has a great influence on the final result of sketching. A fusion method based on angle histogram is proposed to overcome the shortcomings of the existing methods of end-point fusion of hand-drawn plane stereoscopic projection. Firstly, the angle histogram is obtained according to the angle information of the sketch stroke, and the stroke is processed in parallel, then the cluster stroke is judged by tolerance circle, and some cluster endpoints are obtained. Then according to the "coordinate system-weight criterion", the fusion order of each cluster endpoint is determined. Finally, each cluster endpoint is fused according to its corresponding weight order under the premise of ensuring the parallel stroke relationship. The method is verified by FSR_EF prototype system and compared with existing methods. The results show that this method can effectively solve the problems of existing endpoint fusion methods. At the same time, it can keep the original input intention of the user and lay a foundation for the reconstruction of 3D object projection.
【作者单位】：西北工业大学机电学院;
【基金】：国家自然科学基金(51105310) 陕西省自然科学基础研究计划资助项目(2016JM6054) 浙江大学CAD&CG国家重点实验室开放课题(A1615) 西北工业大学研究生创意创新种子基金(Z2016082)
【分类号】：TP391.41

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