Rectangular coordinate must be input when we use computer to draw CAM contour line or use numerically controlled machine to process it.
采用计算机绘制和数控机床加工凸轮廓线时，都要输入直角坐标值。
2
The precision of results is also improved due to the reduction of one of the simplified procedures of rectangular stress contour.
同时，由于减少了一道矩形应力图形的简化步骤而提高了计算精度。
3
The reconstruction method falls into two steps:firstly, extracting all straight lines in the binary image of the rectangular objects" contour, and then parameterizing the extracted lines;"