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Research outline of "High-speed projector and its applications"

Summary

In conventional projectors, the frame rate is low and the latency to output images is large. However, the roles of a projector are not currently limited in the projection to a fixed and flat screen. Such bottleneck in speed performance blocks the creation of next-generation applications. This problem affects the wide-ranging areas such as projection mapping, digital signage, user interface, augmented reality, image sensing for robot control and inspection, and so on. Speed is the powerful key to evolve a projector.

Based on this background, we have developed a new high-speed projector "DynaFlash". We break through the limits in the projector by closely coordinating mirror control based on a Digital Micromirror Device (DMD) with the control of a high-brightness LED and achieve 8-bit-level image projection up to 1,000 fps with the minimum delay of 3 ms. This type of high-speed projector can extend the real world captured by human drastically. For example, it enables dynamic projection mapping perfectly coordinating with dynamically-changing real world by combining with 1,000-fps high-speed vision we have developed originally. Moreover, we can consider that a high-speed projector can be regarded as an illumination device whose brightness change cannot be perceived by human. As a promising application, this concept can create a new type of realistic display generating visually perceived images made by physical objects.

High-speed projector


Dynamic projection mapping




Photos are from work introduction page by WOW and "INORI (prayer) / Making".

Realistic display using physical objects and high-speed illumination



Reference

  • Masatoshi Ishikawa: Interactive Display Technologies Using High-speed Image Processing, TI DLP Workshop Japan 2016.10.19
  • Yoshihiro Watanabe: See the Unseen: Computational Visual Sensing and Display at High Speed, Seminar at NARA Institute of Science and Technology, 2016.10.3.
  • Yoshihiro Watanabe: See the Unseen: Computational Visual Sensing and Display at High Speed, The 75th TAOYAKA Program Seminar, 2016.9.5.
Ishikawa Watanabe Laboratory, Department of Information Physics and Computing, Department of Creative Informatics,
Graduate School of Information Science and Technology, University of Tokyo
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