Miniaturized three-dimensional endoscopic imaging system based on active stereovision

A miniaturized three-dimensional endoscopic imaging system is presented. The system consists of two imaging in channels that can be used to obtain an image from an object of interest and to project as tructured light onto the imaged object to measure the surface topology. The structured light was ge...

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Published in:Applied optics (2004) 2003-04, Vol.42 (10), p.1888-1898
Main Authors: Chan, Manhong, Lin, Wumei, Zhou, Changhe, Qu, Jianan Y
Format: Article
Language:English
Subjects:
Depth Perception
Endoscopes
Endoscopy
Humans
Imaging, Three-Dimensional
Miniaturization
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container_issue 10
container_start_page 1888
container_title Applied optics (2004)
container_volume 42
creator Chan, Manhong
Lin, Wumei
Zhou, Changhe
Qu, Jianan Y
description A miniaturized three-dimensional endoscopic imaging system is presented. The system consists of two imaging in channels that can be used to obtain an image from an object of interest and to project as tructured light onto the imaged object to measure the surface topology. The structured light was generated with a collimated monochromatic light source and a holographic binary phase grating. The imaging and projection channels were calibrated by use of a modified pinhole camera. The surface profile was extracted by use of triangulation between the projected feature points and the two channel ofthe endoscope. The imaging system was evaluated in three-dimensional measurements of several objects with known geometries. The results show that surface profiles of the objects with different surfaces and dimensions can be obtained at high accuracy. The in vivo measurements at tissue sites of human skin and an oral cavity demonstrated the potential of the technique for clinical applications.
doi_str_mv 10.1364/ao.42.001888
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subjects Depth Perception
Endoscopes
Endoscopy
Humans
Imaging, Three-Dimensional
Miniaturization
title Miniaturized three-dimensional endoscopic imaging system based on active stereovision
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