Integrated optical 3D digital imaging based on DSP scheme

Xiaodong Wang; Xiang Peng; Bruce Z. Gao

doi:10.1117/12.755849

28 November 2007 Integrated optical 3D digital imaging based on DSP scheme

Xiaodong Wang, Xiang Peng, Bruce Z. Gao

Proceedings Volume 6833, Electronic Imaging and Multimedia Technology V; 68330B (2007) https://doi.org/10.1117/12.755849
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

We present a scheme of integrated optical 3-D digital imaging (IO3DI) based on digital signal processor (DSP), which can acquire range images independently without PC support. This scheme is based on a parallel hardware structure with aid of DSP and field programmable gate array (FPGA) to realize 3-D imaging. In this integrated scheme of 3-D imaging, the phase measurement profilometry is adopted. To realize the pipeline processing of the fringe projection, image acquisition and fringe pattern analysis, we present a multi-threads application program that is developed under the environment of DSP/BIOS RTOS (real-time operating system). Since RTOS provides a preemptive kernel and powerful configuration tool, with which we are able to achieve a real-time scheduling and synchronization. To accelerate automatic fringe analysis and phase unwrapping, we make use of the technique of software optimization. The proposed scheme can reach a performance of 39.5 f/s (frames per second), so it may well fit into real-time fringe-pattern analysis and can implement fast 3-D imaging. Experiment results are also presented to show the validity of proposed scheme.

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Xiaodong Wang, Xiang Peng, and Bruce Z. Gao "Integrated optical 3D digital imaging based on DSP scheme", Proc. SPIE 6833, Electronic Imaging and Multimedia Technology V, 68330B (28 November 2007); https://doi.org/10.1117/12.755849

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KEYWORDS

Digital signal processing

Fringe analysis

3D image processing

Video

Signal processing

Image processing

Digital imaging

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