本文将色调再生曲线与多项式回归校正相结合，对扫描仪进行复合校正。
In this paper, scanner is calibrated with tone reproduction curve and polynomial regression.
整体颜色的蓝色调浅了一点，增添了一些加亮曲线使渲染图更真实，又增添了一些小图案将渲染图前景的较低部分变暗。
I tweaked a bit the general color to be less blue. Added a bit more highlight curve to make it more "punchy" and added a light vignette to darken a bit the lower foreground part of the image.
色调响应曲线定义原始图像中色调值的映射方式。
The tonal response curve defines how tonal values in the raw image are mapped.
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