Title :
A Novel Optical Method of Dimension Measurement of Objects with Circular Cross-section
Author :
Tomas Radil;Jan Fischer;Jan Kucera
Author_Institution :
Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Measurement, Technicka 2, 166 27 Prague, Czech Republic. Phone: +420-224 352 187, Fax: +420-233 339 929, E-mail: tomas.radil@volny.cz
fDate :
4/1/2006 12:00:00 AM
Abstract :
Common optical methods for dimension measurement apply an imaging sensor with lens. The presence of the lens in the camera (and sometimes also in the employed illuminator) increases the total dimensions of the measuring set-up. The aberrations of the lens represent a source of uncertainty. In order to simplify the measuring set-up and to reduce its overall dimensions, the proposed method applies a measuring set-up that contains no lens (it employs an imaging sensor without lens and two point light source). In this paper, the application of this method for dimension measurement of objects with circular cross-section is described. Also, several issues related to its implementation are discussed and its performance is illustrated using experimental results
Keywords :
"Optical sensors","Light sources","Lenses","Optical imaging","Image sensors","Electric variables measurement","Shape measurement","Optical collimators","Structural beams","Geometrical optics"
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Print_ISBN :
0-7803-9359-7
DOI :
10.1109/IMTC.2006.328478
