论文标题
匹配的照明
Matched Illumination
论文作者
论文摘要
在以前的工作中，可以证明可以使摄像机更加比色 - 它的RGB与XYZ Tristimuli更加线性相关 - 通过将特殊设计的颜色过滤器放在光学路径中。虽然先前的艺术证明了该原理，但最佳的颜色校正过滤器实际上并未制造。在本文中，我们提供了一种新颖的方式来创建颜色过滤效果而不制作物理过滤器：我们通过使用频谱可调的照明系统从照明的角度调整了预滤器的效果来调节光源的光谱。根据我们的方法，如果我们希望在D65光下测量颜色，我们将使用调制的D65频谱重新确定场景，其中光调制模仿了先前艺术中颜色预滤的影响。我们称其为最佳调制的光线，匹配的照明。在实验中，使用合成和实际测量结果，我们表明，当使用匹配的照明时，在模拟数据上可以将颜色测量误差减少约50％或更多。
In previous work, it was shown that a camera can theoretically be made more colorimetric - its RGBs become more linearly related to XYZ tristimuli - by placing a specially designed color filter in the optical path. While the prior art demonstrated the principle, the optimal color-correction filters were not actually manufactured. In this paper, we provide a novel way of creating the color filtering effect without making a physical filter: we modulate the spectrum of the light source by using a spectrally tunable lighting system to recast the prefiltering effect from a lighting perspective. According to our method, if we wish to measure color under a D65 light, we relight the scene with a modulated D65 spectrum where the light modulation mimics the effect of color prefiltering in the prior art. We call our optimally modulated light, the matched illumination. In the experiments, using synthetic and real measurements, we show that color measurement errors can be reduced by about 50% or more on simulated data and 25% or more on real images when the matched illumination is used.
