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【SIGGRAPH Asia 2012专题*技术论文】
颜色和照片:混合照明条件下的用户导向白平衡
User-guided White Balance for Mixed Lighting Conditions
Ivaylo Boyadzhiev, Kavita Bala, Sylvain Paris, Frédo Durand
在这张照片中,环境照明,橱柜灯,天花板灯都具有不同的颜色,从而产生不愉快的色彩表现(一)。在这种情况下,单光白平衡工具提供所有的照片编辑软件,不仅提高了图像的部分,但结果是不令人满意的(B)。我们解决这个问题,让用户注释上的照片。首先,它标志的中性色(即白色或灰色),和地区的的标准白平衡(C)后,看起来不错的对象。这改善了的结果,但是不希望的颜色的变化仍然是看得见的,例如,在橱柜和上壁(四)。用户可以表明这些元素应具有恒定的颜色(e),这免费偏色(六)产生的结果。
In this photo, the ambient lighting, the cabinet light, and the ceiling lights all have different colors, which produces unpleasant color casts (a). In such situations, the single-light white balance tool provided in all photo editing software only improves a portion of the image, but the result is not satisfying (b). We address this issue by letting users make annotations on the photo. First, they mark objects of neutral color (i.e., white or gray), and regions that look fine after the standard white balance (c). This improves the result, but undesirable color variations are still visible, e.g., on the cabinetry and on the wall (d). Users can indicate that these elements should have a constant color (e), which yields a result free of color cast (f).
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