edge definition meaning in Chinese

图像边缘清晰度

In this paper , we define an edge in an image as an area which intensity is sharply variation . the edge preservation is to preserve the gradient of edge areas . based on edge definition , we develop a method to evaluate speckle filters in tern of edge preservation : compute ratio between the sum of gradient absolute value in the edge area of filtered image and original
在研究中发现边缘的概念比较模糊，而边缘的概念对研究斑点滤波方法边缘保持能力有重要的影响；本文认为在sar图像处理中边缘对应图像像元值变化较大的区域；边缘保持是保持边缘区域的梯度；根据这个定义发展了边缘保持评价方法：计算去斑点图像和原始图像边缘区域内梯度绝对值和的比值。