The paper proposes a new method for measuring the 3D shape of fast-moving highly reflective surfaces by using the transitioning state of the digital micro-mirror device (DMD). 1-bit binary patterns are used to achieve kHz measurement speeds and to overcome the rigid camera-projection synchronization requirement. More than one captures of the fringes are made during each cycle of the pattern projection. The dark period between DMD’s ON time is used to alleviate saturation problem of highly reflective surfaces. Experiments conducted demonstrate the success of the proposed method for measuring fast-moving shiny surfaces with an image acquisition speed of 1,000 Hz
Vignesh Suresh and Beiwen Li, "High-speed high dynamic range 3D shape measurement with digital micro-mirror device ," Proc. SPIE 10932, Emerging Digital Micromirror Device Based Systems and Applications XI, 109320G (Presented at SPIE OPTO: February 06, 2019; Published: 4 March 2019); https://doi.org/10.1117/12.2505150.
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