在获得信号点亮度区域的方法中，本文重点讨论了信号点边缘检测和边缘连接的方法。
We discuss deeply the methods of edge detection and edge linkage for obtaining the target region of a signal point.
针对红外图像的特点，提出了一种综合应用边缘检测和区域生长方法的图像分割方法。
An image segmentation method based on edge detection and region growing is proposed in view of the features of IR image.
采用边缘检测和阈值分割方法进行软着陆安全区域选取。
Edge detection and threshold segment are used in safe landing area choice.
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