Projection mapping has long been a popular technique for creating visually stunning displays on real-world objects. However, one common limitation has always hindered its potential – the need for darkness. Without a dark environment, the projected images do not come out as intended, with black and dark colors appearing too bright and glowing. The recent study by researchers from Osaka University aims to change this by bringing projection mapping “into the light.”
Conventional projection mapping works effectively in the dark, where any surface can be turned into an interactive display. However, the surrounding illumination interferes with the projected images, making them appear overly bright and glowing. This limitation restricts the range of objects that can be displayed using projection mapping, as not all objects are meant to be luminous. In addition, displays in dark environments hinder interactions among viewers, as they are less able to see each other clearly.
The researchers from Osaka University propose a novel approach to projection mapping that focuses on reproducing normal illumination in the environment while keeping the target object in shadow. By using a combination of standard projectors and luminaire projectors with wide apertures, they create the illusion of global illumination without actually using it. This technique allows them to project texture images onto objects without making them appear to glow, presenting the true colors of the object’s surface instead.
The research team’s approach involves using a set of techniques that are different from those of conventional projection mapping. By strategically placing projectors to illuminate the room while keeping the target object in shadow, they are able to map textures onto the object’s surface effectively. They also utilize a projector with a wide aperture and a large-format lens to soften the edges of shadows, enhancing the overall visual quality of the projected images.
In the future, the researchers plan to enhance their approach by adding more projectors to handle complex illumination in areas adjacent to the display object. Their goal is to create scenes that are indistinguishable from real-world three-dimensional environments, enabling new possibilities for visual design in various fields. By facilitating communication and interaction among participants under natural light, this new approach to projection mapping could revolutionize industries like industrial product design and packaging.
The study by researchers from Osaka University represents a significant advancement in the field of projection mapping. By addressing the limitations of conventional projection mapping techniques and introducing a novel approach to projecting global illumination, they have opened up new possibilities for creating realistic and interactive displays in well-lit environments. The future looks bright for projection mapping, as it continues to evolve and innovate in the realm of visual design and communication.
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