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Non-contact position tracking using phase correlation of sample images for NDT applications
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Petcher, P. A. and Dixon, S. (2011) Non-contact position tracking using phase correlation of sample images for NDT applications. Insight - Non-Destructive Testing and Condition Monitoring, Vol.53 (No.4). pp. 185-192. doi:10.1784/insi.2011.53.4.185 ISSN 1354-2575.
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Official URL: http://dx.doi.org/10.1784/insi.2011.53.4.185
Abstract
Non-destructive testing methods are used in an increasing number of applications, some of which require precise knowledge of the relative position between transducer and surface. Conventionally, this has been determined using a contact method such as a linear/rotary encoder. An alternative is demonstrated here, using a digital camera and the phase correlation technique. Linear sample movement has been determined to sub-pixel precision, confirmed manually as a median accuracy of 0.01 mm of linear movement (0.06 of a pixel) in this case, despite uneven illumination and the use of a basic low-resolution camera.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Physics |
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Library of Congress Subject Headings (LCSH): | Nondestructive testing | ||||
Journal or Publication Title: | Insight - Non-Destructive Testing and Condition Monitoring | ||||
Publisher: | British Institute of Non-Destructive Testing | ||||
ISSN: | 1354-2575 | ||||
Official Date: | 1 April 2011 | ||||
Dates: |
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Volume: | Vol.53 | ||||
Number: | No.4 | ||||
Page Range: | pp. 185-192 | ||||
DOI: | 10.1784/insi.2011.53.4.185 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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