StainedView: Variable-Intensity Light-Attenuation Display with Cascaded Spatial Color Filtering for Improved Color Fidelity
StainedView: Variable-Intensity Light-Attenuation Display with Cascaded Spatial Color Filtering for Improved Color Fidelity
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DOI：
10.1109/tvcg.2020.3023569
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发表时间：
2020-09
影响因子：
5.2
通讯作者：
Takumi Kaminokado;Yuichi Hiroi;Yuta Itoh
中科院分区：
文献类型：
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作者：
Takumi Kaminokado;Yuichi Hiroi;Yuta Itoh
我们提出了一种光学透视显示器，它可以在空间上过滤光的光谱分布，以形成具有改进的色彩保真度的图像。现有的光衰减显示器具有有限的颜色保真度和对比度，导致虚拟图像的外观退化。为了使用这些显示器来呈现与真实的世界更一致的虚拟图像，我们需要三件事：入射光的强度调制，具有更窄带宽的空间颜色过滤，以及对具有任意光谱分布的入射光进行适当的光调制。在AnchoredView中，我们通过级联两个纯相位空间光调制器（PSLM），一个数字偏振器件和偏振光学器件来控制光强和光谱分布来满足这三个要求。我们表明，我们的设计有一个1.8倍更广泛的色域保真度（75.8%的sRGB色彩空间的履行）相比，现有的单PSLM的方法（41.4%）下的参考白色光。我们通过概念验证显示系统演示了该设计。我们进一步介绍了我们的光学设计和像素选择算法，为给定的光输入，评估空间彩色滤光片，并讨论了目前的原型的局限性。
We present StainedView, an optical see-through display that spatially filters the spectral distribution of light to form an image with improved color fidelity. Existing light-attenuation displays have limited color fidelity and contrast, resulting in a degraded appearance of virtual images. To use these displays to present virtual images that are more consistent with the real world, we require three things: intensity modulation of incoming light, spatial color filtering with narrower bandwidth, and appropriate light modulation for incoming light with an arbitrary spectral distribution. In StainedView, we address the three requirements by cascading two phase-only spatial light modulators (PSLMs), a digital micromirror device, and polarization optics to control both light intensity and spectrum distribution. We show that our design has a 1.8 times wider color gamut fidelity (75.8% fulfillment of sRGB color space) compared to the existing single-PSLM approach (41.4%) under a reference white light. We demonstrated the design with a proof-of-concept display system. We further introduce our optics design and pixel-selection algorithm for the given light input, evaluate the spatial color filter, and discuss the limitation of the current prototype.