In structured light illumination (SLI), the nonlinear distortion of the optical devices dramatically ruins accuracy of three-dimensional reconstruction when using only a small number of projected patterns. We propose a universal algorithm to calibrate these device nonlinearities to accurately precompensate the patterns. Thus, no postprocessing is needed to correct for the distortions while the number of patterns can be reduced down to as few as possible. Theoretically, the proposed method can be applied to any SLI pattern strategy. Using a three-pattern SLI method, our experimental results will show a 25× to 60× reduction in surface variance for a flat target, depending upon any surface smoothing that might be applied to remove Gaussian noise.
|State||Published - May 2014|
Bibliographical noteFunding Information:
This work was sponsored, in part, by the research startup funding of Sichuan University, China, under contract #2082204164059, and by the Science and Technology Support Program of Sichuan Province, China, under contract #2014GZ0005.
- nonlinear distortion
- structured light
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering (all)