摘要
基于稀疏轮廓跟踪和整体矢量化方法提出特征轮廓跟踪的圆整体矢量化算法。该算法通过稀疏特征轮廓跟踪搜索圆的初始段区域,得到初始段区域的属性,利用初始段区域几何属性指导后续的跟踪,得到圆的特征段及其几何属性,随后以特征段为依据,以特征段两端点和方向等属性为基础,动态地改变跟踪方向和圆的端点,向两边继续跟踪,获得圆精确的矢量结果。该算法的优点:在时间上具有一定的优势,对圆弧的识别具有完整性和任意性、识别正确率高、具有强的抗噪性等特点。
The global vectorization algorithm of characteristic contour tracking for circular-typed graphics primitive is put forward based on sparse contour tracking and global vectorization method.The initial line segment and its geometric attribute is obtained through sparse contour tracking.The geometric attribute of characteristic segment,the direction and radius are obtained through sparse contour tracking instructed by the geometric attribute of initial segment.Then the step of tracking is instructed for the attribute of characteristic segment in order to get the accurate vectorization results of circle.The direction and endpoint of characteristic segment change dynamically in the tracking procedure.The advantage of the proposed method is its high recognition rate.Experimental results shows that the performance of circle vectorization has a good anti-noise ability
出处
《机械科学与技术》
CSCD
北大核心
2010年第4期528-531,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
矢量化
特征轮廓跟踪
整体化
工程图
圆
vectorization
characteristic contour tracking
global vectorization
engineering drawings
circle
