The edge feature extraction of images has always been one of the most important and the most basic research tasks in the field of computer vision.
图像的边缘特征提取一直是计算机视觉领域里最重要的和最基本的研究任务之一。
Reovering the feature point and feature line is the basic in the computer visual inspection, the high-precision is asked in the measurement of industry.
特征点、特征线的提取是计算机视觉检测的基础，特别是在工业检测中要求很高的精度。
Thus, feature extraction has become the basic research of the related areas of image processing such as pattern recognition and computer vision.
因此特征提取成为模式识别与计算机视觉等图像处理相关领域的基础性研究内容。
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