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http://dx.doi.org/10.5762/KAIS.2019.20.5.530

Concepts of System Function and Modulation-Demodulation based Reconstruction of a 3D Object Coordinates using Active Method  

Lee, Deokwoo (Department of Computer Engineering, Keimyung University)
Kim, Jisu (Department of Computer Engineering, Keimyung University)
Park, Cheolhyeong (Department of Computer Engineering, Keimyung University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.5, 2019 , pp. 530-537 More about this Journal
Abstract
In this paper we propose a novel approach to representation of the 3D reconstruction problem by employing a concept of system function that is defined as the ratio of the output to the input signal. Akin to determination of system function (or system response), this paper determines system function by choosing (or defining) appropriate input and output signals. In other words, the 3D reconstruction using structured circular light patterns is reformulated as determination of system function from input and output signals. This paper introduces two algorithms for the reconstruction. The one defines the input and output signals as projected circular light patterns and the images overlaid with the patterns and captured by camera, respectively. The other one defines input and output signals as 3D coordinates of the object surface and the image captured by camera. The first one leads to the problem as identifying the system function and the second one leads to the problem as estimation of an input signal employing concept of modulation-demodulation theory. This paper substantiate the proposed approach by providing experimental results.
Keywords
Circular Pattern; Demodulation; Light Pattern; Modulation; System Function; 3D Reconstruction;
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