Presentation
10 March 2020 Impact of the shape of digital micro-mirrors on super high- resolution 3D shape measurement (Conference Presentation)
Author Affiliations +
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.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jae-Sang Hyun and Song Zhang "Impact of the shape of digital micro-mirrors on super high- resolution 3D shape measurement (Conference Presentation)", Proc. SPIE 11294, Emerging Digital Micromirror Device Based Systems and Applications XII, 112940N (10 March 2020); https://doi.org/10.1117/12.2542748
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KEYWORDS
3D metrology

Projection systems

Digital Light Processing

Digital micromirror devices

Micromirrors

Super resolution

Cameras

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