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High resolution wide angle optical position detector Tan, Chang Kian
Abstract
A wide angle high resolution position sensing system for telerobotic system endpoint tracking and position calibration has been developed and tested. Compared to existing commercial products, the system developed has the following important features: (a) wide angle detection without any moving parts; (b) high resolution; (c) fast response; (d) low cost; and (e) robustness. The system consists of a light source, a simple optical mask, a CCD camera and a basic signal processing system. The optical mask contains specially arranged pinholes, each is dedicated to sense the position of the light source when it is within a small designated solid angle. The solid angles associated with adjacent pinholes overlap sufficiently to ensure continuity of the position sensing. The position is sensed through processing the pattern of the few light spots cast through pinholes on the mask onto the CCD sensor. Depending on the pinhole arrangement, the signal processing needed to determine the light source angular position can be cut down significantly. In general, the optical mask can be in any convex shape with the pinholes arranged in any known and easily processed pattern.
Item Metadata
Title |
High resolution wide angle optical position detector
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1994
|
Description |
A wide angle high resolution position sensing system for telerobotic system endpoint
tracking and position calibration has been developed and tested. Compared to existing
commercial products, the system developed has the following important features: (a) wide
angle detection without any moving parts; (b) high resolution; (c) fast response; (d) low cost;
and (e) robustness.
The system consists of a light source, a simple optical mask, a CCD camera and a
basic signal processing system. The optical mask contains specially arranged pinholes, each
is dedicated to sense the position of the light source when it is within a small designated
solid angle. The solid angles associated with adjacent pinholes overlap sufficiently to ensure
continuity of the position sensing. The position is sensed through processing the pattern of
the few light spots cast through pinholes on the mask onto the CCD sensor. Depending on
the pinhole arrangement, the signal processing needed to determine the light source angular
position can be cut down significantly. In general, the optical mask can be in any convex
shape with the pinholes arranged in any known and easily processed pattern.
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Extent |
2425926 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-02-26
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0065110
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1994-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.