F. P. Chiang

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About

F. P. Chiang is a pioneering figure in optical metrology and three-dimensional shape measurement, with a career defined by innovative contributions to structured light techniques. His most-cited work, the 2004 paper on the "Trapezoidal phase-shifting method for 3D shape measurement," introduced a novel approach that replaced traditional sinusoidal patterns with trapezoidal-shaped gray-level codes. This method simplified the extraction of 3D information by directly calculating an intensity ratio, offering a faster and more robust alternative for surface profilometry. With 14 citations, this seminal paper has influenced subsequent research in high-speed, high-accuracy optical sensing. Chiang’s broader research spans experimental mechanics, digital holography, and fringe projection, where he has advanced the understanding of deformation and shape analysis. His work is widely recognized for bridging theoretical optics with practical engineering applications, making complex measurement systems more accessible. A respected mentor and collaborator, Chiang’s legacy lies in his ability to distill intricate optical principles into elegant, implementable solutions, inspiring generations of engineers and scientists in the field of non-contact measurement.