Based on the criteria of the shortest path of curves and directional deviation of paths, principal curve detection is carried out in graph domain.
基于曲线最短路径和方向偏移判据，主曲线检测的所有运算都在图形表达中进行。
Since characters and map symbols often overlap with useful image features, the algorithm of principal curve detection aims to obtain "clean" feature images from the original maps.
由于测绘图中的文字、符号常常与有意义的图像特征重叠，主曲线检测旨在从原始测绘图中获得“洁净”的特征图像。
It combines computer technology with multichannel photoelectric detection system with spectral sensitivity of CIE standard observers curve.
它采用微机技术和具有CIE标准观察者曲线光谱响应的多通道光电检测系统。
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