Abstract

AMATLAB/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.

Original languageEnglish
Pages (from-to)29938-29949
Number of pages12
JournalSensors
Volume15
Issue number12
DOIs
Publication statusPublished - Dec 2015

Fingerprint

Software
Technology
Detectors
Scanning
Light
Thin films
scanning
detectors
thin films
Lasers
Sensor arrays
sensors
simulation
computer programs
Sensors
Triangulation
Model structures
triangulation
Image quality
profiles

Keywords

  • Arrays
  • Optical sensing and sensors
  • Thin film devices and applications
  • Three-dimensional image acquisition
  • Three-dimensional image processing
  • Three-dimensional sensing

Cite this

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title = "Simulated and real sheet-of-light 3D object scanning using a-Si: H thin film PSD arrays",
abstract = "AMATLAB/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.",
keywords = "Arrays, Optical sensing and sensors, Thin film devices and applications, Three-dimensional image acquisition, Three-dimensional image processing, Three-dimensional sensing",
author = "Javier Contreras and Josep Tornero and Ferreira, {Isabel Maria Merc{\^e}s} and Rodrigo Martins and Luis Gomes and Elvira Fortunato",
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Simulated and real sheet-of-light 3D object scanning using a-Si : H thin film PSD arrays. / Contreras, Javier; Tornero, Josep; Ferreira, Isabel Maria Mercês; Martins, Rodrigo; Gomes, Luis; Fortunato, Elvira.

In: Sensors, Vol. 15, No. 12, 12.2015, p. 29938-29949.

Research output: Contribution to journalArticle

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