The Optimal Threshold Algorithm and Canny Based Edge Detection in Optical Area and Dimension Measurement
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F08%3A03146043" target="_blank" >RIV/68407700:21230/08:03146043 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The Optimal Threshold Algorithm and Canny Based Edge Detection in Optical Area and Dimension Measurement
Original language description
The fluctuating light conditions cause troubles in image processing based area and dimension measurement. This article describes the hardware implementation and measured properties of canny-based edge detection [5] and an optimal thresholding method. Both units were implemented on proprietary FPGA-based image processing system for "on the fly" measurement. The optimal threshold algorithm presented is able to adapt to changed light conditions and calculates the object size counting the pixels above threshold. The other method uses the first and the second differentiation combined with low-pass filter do locate the object edges and calculates the object size by subtracting their positions. As it uses the maximal slope as edge criteria it is also resistant against illumination changes.
Czech name
Použití optimálního prahovacího algoritmu a algoritmu vycházejícího z Cannyho hranové detekce pro optická měření rozměru a plochy
Czech description
Příspěvek se zabývá použitím optimálního prahovacího algoritmu a algoritmu vycházejícího z Cannyho hranové detekce pro optická měření rozměru a plochy.
Classification
Type
D - Article in proceedings
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
16th IMEKO TC4 International Symposium
ISBN
978-88-903149-3-3
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
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Publisher name
University of Florence, Faculty of Engineering and Faculty of Economics
Place of publication
Florence
Event location
Florence
Event date
Sep 22, 2008
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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