Welcome to the MGHPCC Virtual Booth


Color Changing Objects

The HCI Engineering Group works at the intersection of human computer interaction and personal fabrication tools. The group's long-term vision is that in the future anybody will be able to create anything anywhere anytime. Working towards this goal, the group builds novel hardware and software systems that advance personal fabrication technologies.

In this paper, we present a method she has been working on that makes 3D objects appear differently under different viewpoints. We accomplish this by 3D printing lenticular lenses across the curved surface of objects. By calculating the lens distribution and the corresponding surface color patterns, we can determine which appearance is shown to the user at each viewpoint. We built a 3D editor that takes as input the 3D model, and the visual appearances, i.e. images, to show at different viewpoints. Our 3D editor then calculates the corresponding lens placements and underlying color pattern. On export, the user can use ray tracing to live preview the resulting appearance from each angle. The 3D model, color pattern, and lenses are then 3D printed in one pass on a multi-material 3D printer to create the final 3D object.

Video provided by CSAIL Alliances.

Yunyi Zhu
PhD Student, HCI Engineering Group, MIT CSAIL


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