A new image enhancement algorithm based on covering template method was proposed in allusion to problem of blurring of edgecontour induced by using the method.
针对掩模法存在边缘模糊负面效应的问题，提出了一种基于掩模法的新型图像增强算法。
2
While shapes are mostly defined by a contrast between elements, they're also defined by their contour, or edge.
虽然形状主要是通过元素间的对比来定义，但它们也可以借助轮廓线或边来定义。
3
Besides, the algorithms of edge detection, contour extraction and contour trace have been adopted in ct imaging processing.