This paper presents a simple and low-cost range finding system based on the absorption of light by a dispersive medium. The object to be digitized is immersed in a colored liquid and the 3-D data is obtained by processing a pair of greylevel images taken at different wavelengths. Calibration, acquisition, visualization and manipulation of the 3-D data are implemented through menus and graphic windows on a SUN-3 workstation.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Regis Houde, Regis Houde, Denis Laurendeau, Denis Laurendeau, Denis Poussart, Denis Poussart, } "3-D camera based on differential optical absorbance", Proc. SPIE 1332, Optical Testing and Metrology III: Recent Advances in Industrial Optical Inspection, (1 January 1991); doi: 10.1117/12.51055; https://doi.org/10.1117/12.51055

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