以红色圆形印鉴为例，利用票据图像的彩色信息进行处理，把图像转换为灰度图像后，突出了原来的红色分量。
The red seal is selected as research sample. This seal is processed by color information of note image.
通过在HSV彩色空间计算欧式距离，把彩色图像转换为灰度图像，然后利用灰度图像的分割方法对车辆进行分割。
With Euclid distance computed in HSV space, color image is translated into grayscale image, which segmentation methods can be applied in to partition the vehicle from the background.
用彩色扫描仪输入紧密织物组织的灰度图像并将其转换为数字文件，然后通过灰度图像形态学处理获得增强图像。
The gray-level image of solid woven fabrics is captured by a color scanner and converted into digital files, then enhanced images are obtained by a gray-level morphological operation.
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