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Proceedings Paper

Impact of the shape of digital micro-mirrors on super high- resolution 3D shape measurement (Conference Presentation)

Paper Abstract

The state-of-art three-dimensional (3D) shape measurement techniques based on digital fringe projection (DFP) techniques assume that the influence of the shape of projector pixel shape is negligible. However, our research reveals that when the camera pixel size is much smaller (e.g., 1/10 or less) than the projector pixel size in object space, the shape of the projector pixel significantly can impact ultimate measurement quality even when binary defocusing technique is employed. This paper evaluates the performance of two different types of projector pixels: rectangular and diamond shaped. Both simulation and experimental results demonstrated that when, the camera pixel size is significantly smaller than the projector pixel size, it is advantageous to use a projector with rectangular pixels than the projector with a diamond shaped pixels.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11294, Emerging Digital Micromirror Device Based Systems and Applications XII, 112940N (10 March 2020); doi: 10.1117/12.2542748
Show Author Affiliations
Jae-Sang Hyun, Purdue Univ. (United States)
Song Zhang, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 11294:
Emerging Digital Micromirror Device Based Systems and Applications XII
John Ehmke; Benjamin L. Lee, Editor(s)

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