采用HIS颜色模型，以色度为主要特征量，设定阈值对烟草和异物的像素点进行判别。
The HIS color model is used and the chroma is taken as the most characteristic parameter.
采用HIS颜色模型，以色度为主要特征量，设定阈值对烟草和异物的像素点进行判别。
The HIS color model is used and the chroma is taken as the most characteristic parameter. The threshold value is set to distinguish whether the pixel belongs to tobacco or foreign body.
首先，在变换空间建立色度直方图表示图像的颜色分布特征。
First, hue histogram is generated which represents the distribution of hue values in an image in transformed space.
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