Dynamic Depth-of-Field Projection for 3D Projection Mapping
This video introduces a dynamic depth-of-field projection system to realize a 3D projection mapping. The prototype included with a high-speed projector, a high-speed variable focus lens and a depth sensor.
A comparison experiment showed that two fixed focus projectors were in the left and middle, and the projection became blurry when the board moved out of the focus. While, in the right, our dynamic projection was always in focus when the board moved from 0.5 to 2.0 meters.
In the second experiment, volumetric medical data could be projected and observed in a virtual 3D space. A CT head scanning image was projected in a 1.0-meter virtual space, when the board was moved, each slice image could be clearly observed. A MR scanning image could also be projected, when the board was moved, the detail information could be observed. It provides a friendly interactive platform for doctors and patients, and makes it easier for patients to understand the doctor's instructions.
Lihui Wang, Hongjin Xu, Yunpu Hu, Satoshi Tabata, Masatoshi Ishikawa, Dynamic Depth-of-Field Projection for 3D Projection Mapping, ACM CHI Conference on Human Factors in Computing Systems (CHI'19) (Glasgow, Scotland, UK. 2019.05.04-09)
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