1·Besides, the algorithms of edge detection, contour extraction and contour trace have been adopted in ct imaging processing.
此外，运用边缘检测、轮廓提取和轮廓跟踪等算法将CT图像进行边缘以及轮廓的处理。
2·Firstly, using the contour tracing algorithm to trace the manipulated contour BMP, it has attained the contour point chain recorded by chain Code.
首先，运用轮廓追踪算法追踪经过图象处理后的轮廓位图，形成链符法记录的轮廓点列数据。
3·After this, it need trace the contour.
在得到螺纹边缘轮廓后，需进行轮廓跟踪。