在研究了彩色地图扫描数据中客观存在的颜色误差后，根据彩色地图颜色的变化规律，提出了一种快速分层算法。
This paper presents that the segmentation of color map can not be fulfilled only by using color after analyzing the color errors in the scanned data.
由于测量方法不同，会有2 CM的误差，由于不同显示器显示效果都不尽相同，实拍图与实物有细微颜色误差属正常情况。
Because the different measurement methods, there will be 2cm error, due to different monitors display different, really making a subtle color maps and real error is normal.
复杂图形的例子包括专业化的条形图和须状图，带有完整误差的时间序列条形图，颜色编码和密度图，以及许多其他可能的图。
Examples of complicated graphs include specialized bar-and-whiskers plots, time-series with sophisticated error bars, color encodings and density plots, and many other possibilities.
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