Abstract With projection mapping, we can control the appearance of real-world objects by adding illumination. A projector can be used to control light reflected from an object, where the reflected light depends not only on the projection but also on the reflectance and environmental light. Because the resulting colors are affected by the reflectance and environmental light, the presentable color range of a projector is limited. The purpose of this work is to broaden this limited range by focusing on the perceived colors. Although our eyes capture reflected light to perceive the colors of an object, the colors perceived by humans are not always the same as the actual colors, and there are often significant differences between them because of the human visual system. To overcome the limitations of a projector based on human perception, we intentionally generate this difference by inducing a visual illusion, namely, color constancy. In this work, we designed an algorithm to determine the projected colors for presenting the desired colors perceptually by employing a color constancy effect. In addition, we conducted a user study and confirmed that our algorithm can (1) create a misperception regarding the color of illumination, (2) broaden the presentable color range of a projector, and (3) shift the perceptual colors in the desirable direction.

中文翻译：

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幻光：使用投影诱导幻觉的感知外观控制

摘要 通过投影映射，我们可以通过添加照明来控制现实世界对象的外观。投影仪可用于控制从物体反射的光，其中反射光不仅取决于投影，还取决于反射率和环境光。由于产生的颜色受反射率和环境光的影响，投影仪可呈现的颜色范围是有限的。这项工作的目的是通过关注感知的颜色来扩大这个有限的范围。虽然我们的眼睛捕捉反射光来感知物体的颜色，但人类感知到的颜色并不总是与实际颜色相同，而且由于人类视觉系统的不同，它们之间往往存在显着差异。为了克服基于人类感知的投影仪的局限性，我们通过引入视觉错觉，即颜色恒常性，故意产生这种差异。在这项工作中，我们设计了一种算法来确定投影颜色，通过采用颜色恒常效应在感知上呈现所需的颜色。此外，我们进行了一项用户研究并确认我们的算法可以 (1) 造成对照明颜色的误解，(2) 拓宽投影仪的可呈现颜色范围，以及 (3) 将感知颜色转移到所需的方向.