基于不同加工工艺的微小型结构件边缘识别

针对不同加工工艺微小型结构件的不同边缘特征，提出了一种基于工艺匹配思想的微小型结构件边缘识别算法．该算法通过计算有效平均梯度，提取不同加工工艺微小型结构件的边缘过渡区，建立边缘过渡区的多项式回归模型，求导确定边缘点精确位置．通过对4种常用微细加工工艺建模分析可以看出，加工工艺对微小型结构件边缘区域影响较大，边缘精确识别时应加入工艺匹配的思想．该算法考虑了实际加工工艺的影响，算法上加入统计学方法，通过建立过渡区数学模型，使边缘检测结果达到亚像素级．

Edge Detection of Micro Accessory Based on Different Machining Process

Based on the different edge features of micro accessory under different machining process, a new edge detecting algorithm based on process matching was proposed. The new algorithm got the transition region of micro accessory by calculating effective average gradient. Then the polynomial regression mathematics model of transition region image was built and the accurate position was definited by derivating. Analyzing four common micro-machining models shows that the machining process has greater influence on the edge of micro accessory and the edge detection of micro accessory should consider the influence of process matching. The processing condition and statistics were added in the algorithm. The edge detection result can reach the inferior pixel level by building the mathematics model of transition region.