Measurement of the shape of objects by shape from focus
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00455576" target="_blank" >RIV/68378271:_____/15:00455576 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1117/12.2189187" target="_blank" >http://dx.doi.org/10.1117/12.2189187</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2189187" target="_blank" >10.1117/12.2189187</a>
Alternative languages
Result language
angličtina
Original language name
Measurement of the shape of objects by shape from focus
Original language description
Shape from focus is a method for the accurate measurement of the geometrical shape of objects. The measurement principle is the local focus search. Therefore, the method is suitable only for objects with a texture. The shape of the object is extracted from a series of 2D images. The 2D images are acquired while the distance of the measured object from the objective lens continuously changes. The longitudinal coordinate of the corresponding surface point is determined from the maximum of the focus measure function. The focus measure function expresses the quality of focus in a small image area and is calculated from the intensity values of individual pixels of a CCD camera by means of a focus measure operator. We present experimental results that demonstrate the capability of the proposed measurement method. The influence of illumination on the measurement uncertainty is studied. The comparison of the results for various focus measure operators and various light sources is presented.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA13-12301S" target="_blank" >GA13-12301S: Optical 3D sensors with high information efficiency</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
International Conference on Optical and Photonic Engineering
ISBN
978-1-62841-684-8
ISSN
0277-786X
e-ISSN
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Number of pages
6
Pages from-to
"952412-1"-"952412-6"
Publisher name
SPIE
Place of publication
Bellingham
Event location
Singapore
Event date
Apr 14, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000359674600038