Simple tone reproduction methods such as the Reinhard global photographic tonemapping operator are popular methods for mapping high-dynamic range images to a lowdynamic range display. However, these methods deal mainly with how luminance is mapped; much less attention has been paid to how a full RGB color is produced. We introduce a simple method, inspired by traditional photography's use of polarizers to manage color, to map RGB colors when using global photographic operators for luminance.

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... s method allows the user to tradeoff luminance for colorfulness, avoids unpredictable hue shifts and desaturation of the image, and guarantees results lie in the RGB color cube without clamping.