grey scale

灰比，灰度等级

Grey scale mathematical morphology methods are used to process fundus image.

眼底图是一种重要的医学图象.

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If it works well in grey scale as well as in colour, then you've succeeded.

如果画的明暗和色彩一样好, 那么你就成功了.

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The grey scale and texture features may describe the target in SAR image accurately.

灰度和纹理特征能确切地描述SAR图像中的目标.

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