根据阴影与非阴影区域间存在色调差异，利用HSV彩色模型，提取可能阴影区域。
According to hue difference between shaded and non-shaded regions, possible shaded regions were extracted by HSV color model at first.
根据阴影与非阴影区域间存在色调差异，利用HSV彩色模型，提取可能阴影区域。
According to hue difference between shaded and non-shaded regions, possible shaded regions were extracted by HSV color model at first.
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