High speed 3D shape measurements with motion compensation

Shijie Feng; Chao Zuo; Qian Chen; Guohua Gu

doi:10.1117/12.2270942

13 June 2017 High speed 3D shape measurements with motion compensation

Shijie Feng, Chao Zuo, Qian Chen, Guohua Gu

Proceedings Volume 10449, Fifth International Conference on Optical and Photonics Engineering; 1044934 (2017) https://doi.org/10.1117/12.2270942
Event: Fifth International Conference on Optical and Photonics Engineering, 2017, Singapore, Singapore

Abstract

Fringe projection is an extensively used technique for high speed three-dimensional (3D) measurements of dynamic objects. However, the motion often leads to artifacts in reconstructions due to the sequential recording of the set of patterns. In order to reduce the adverse impact of the movement, we present a novel high speed 3D scanning technique combining the fringe projection and stereo. Firstly, promising measuring speed is achieved by modifying the traditional aperiodic sinusoidal patterns so that the fringe images can be cast at kilohertz with the widely used defocusing strategy. Next, a temporal intensity tracing algorithm is developed to further alleviate the influence of motion by accurately tracing the ideal intensity for stereo matching. Then, a combined cost measure is suggested to robustly estimate the cost for each pixel. In comparison with the traditional method where the effect of motion is not considered, experimental results show that the reconstruction accuracy for dynamic objects can be improved by an order of magnitude with the proposed method.

Citation Download Citation

Shijie Feng, Chao Zuo, Qian Chen, and Guohua Gu "High speed 3D shape measurements with motion compensation", Proc. SPIE 10449, Fifth International Conference on Optical and Photonics Engineering, 1044934 (13 June 2017); https://doi.org/10.1117/12.2270942

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KEYWORDS

3D image processing

3D metrology

Fourier transforms

3D printing

Stereoscopy

Electronic imaging

Image sensors

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