Can sorting using sheet-of-light range imaging and MAPP2200

Johannesson, Mattias

doi:10.1109/icsmc.1993.385032

Cited by 3 publications

(1 citation statement)

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“…Among the existing laser scanning techniques, a structured light triangulation method is considered to be fastest when acquiring 3D data information from an object in real time [ 1 ]. Generally, sheet-of-light systems use digital sensors such as CCDs (Charged Coupled Devices) or CMOS (Complementary Metal Oxide Semiconductors) [ 2 ], nevertheless, analog sensors such as arrays of PSDs (position sensitive detectors) with reported sizes of up to a maximum of 128 have also been employed [ 3 , 4 ]. The latter are fabricated using crystalline silicon, however, PSD arrays based on amorphous silicon nip or pin structures also exist and have already been described elsewhere [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Simulated and Real Sheet-of-Light 3D Object Scanning Using a-Si:H Thin Film PSD Arrays

Contreras

Tornero

Ferreira

et al. 2015

Sensors

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A MATLAB/SIMULINK software simulation model (structure and component blocks) has been constructed in order to view and analyze the potential of the PSD (Position Sensitive Detector) array concept technology before it is further expanded or developed. This simulation allows changing most of its parameters, such as the number of elements in the PSD array, the direction of vision, the viewing/scanning angle, the object rotation, translation, sample/scan/simulation time, etc. In addition, results show for the first time the possibility of scanning an object in 3D when using an a-Si:H thin film 128 PSD array sensor and hardware/software system. Moreover, this sensor technology is able to perform these scans and render 3D objects at high speeds and high resolutions when using a sheet-of-light laser within a triangulation platform. As shown by the simulation, a substantial enhancement in 3D object profile image quality and realism can be achieved by increasing the number of elements of the PSD array sensor as well as by achieving an optimal position response from the sensor since clearly the definition of the 3D object profile depends on the correct and accurate position response of each detector as well as on the size of the PSD array.

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