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。

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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。

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After this, it need trace the contour.

在得到螺纹边缘轮廓后，需进行轮廓跟踪。

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After this, it need trace the contour.

在得到螺纹边缘轮廓后，需进行轮廓跟踪。

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