So image edge distilling is the measurement foundation and key in image measurement system.
可见在图像测量系统中，图像的边缘提取是测量的基础和关键。
The paper analyzed the JPEG compressing method with losing information and several classical methods of edge distilling in brief.
简要分析了有损JPEG压缩算法和几种经典的边缘提取算法；
In this paper, three aspect that is theory discussion, algorithms realization and applications are introduced, which aim at edge detection in distilling image character.
本文系统地介绍了针对图像特征提取中边缘检测方面所做的理论探讨、算法实现及实际应用三方面的工作。
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