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  Indian J Med Microbiol
 

Figure 2: The color space created as a planar representation of the RGB optical density space. When imaging with an RGB scanner, hues inside the polygon spanned by the four reference stains are ambiguous, for example, there are multiple combinations of up to three stains that can result in this hue

Figure 2: The color space created as a planar representation of the RGB optical density space. When imaging with an RGB scanner, hues inside the polygon spanned by the four reference stains are ambiguous, for example, there are multiple combinations of up to three stains that can result in this hue