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US08576445B2 Method for processing high dynamic range images using tone mapping to extended RGB space 有权
使用色调映射到扩展RGB空间来处理高动态范围图像的方法

Method for processing high dynamic range images using tone mapping to extended RGB space
Abstract:
A method for processing a high dynamic range (HDR) image for printing. Tone mapping is first applied to the input image to map the colors from the original color space to an extended RGB space without scaling or clipping of colors. The colors are then converted to a device-independent color space such as Jab, and scaled (normalized) in that space. Then, image-based gamut mapping is performed in the Jab space to map the gamut of the image to the gamut of the destination device. The colors are then converted to the color space of the destination device (e.g. printer) and outputted.
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