TY - GEN
T1 - Reduce measurement uncertainty of ball crater method by using image processing techniques
AU - Huang, Jungang
AU - Liatsis, Panos
AU - Cooke, Kevin
N1 - Funding Information:
The authors would like to acknowledge the financial support of TSB/Advantage W. Midlands under KTP Partnership No. 006504.
PY - 2012
Y1 - 2012
N2 - A method of reducing the uncertainty in measuring coating thickness using the ball crater method is proposed in this research. A crucial step of the ball crater method is measurement of the radii of the crater circles from a microscope image. While traditional methods of measuring the radii involve human operators, who inevitably introduce measurement uncertainty, the proposed approach measures a radius by fitting a circle (or an ellipse) to all edge points of a crater circle edge, which is extracted from the microscope image of the crater by using image processing techniques. This eliminates the subjectiveness introduced by human operators and reduces the measurement uncertainty. Experimental results confirm the feasibility of our method and its potential in reducing measurement uncertainty and increasing measurement accuracy of the ball crater method. The use of all edge points in the estimation of the radius in the proposed method also enables accurate determination of coating thickness from an image of a crater taken from a direction other than the normal to the coating surface.
AB - A method of reducing the uncertainty in measuring coating thickness using the ball crater method is proposed in this research. A crucial step of the ball crater method is measurement of the radii of the crater circles from a microscope image. While traditional methods of measuring the radii involve human operators, who inevitably introduce measurement uncertainty, the proposed approach measures a radius by fitting a circle (or an ellipse) to all edge points of a crater circle edge, which is extracted from the microscope image of the crater by using image processing techniques. This eliminates the subjectiveness introduced by human operators and reduces the measurement uncertainty. Experimental results confirm the feasibility of our method and its potential in reducing measurement uncertainty and increasing measurement accuracy of the ball crater method. The use of all edge points in the estimation of the radius in the proposed method also enables accurate determination of coating thickness from an image of a crater taken from a direction other than the normal to the coating surface.
KW - Coatings
KW - Digital image processing
KW - Measurement uncertainty
KW - Thickness measurement
UR - http://www.scopus.com/inward/record.url?scp=84862916966&partnerID=8YFLogxK
U2 - 10.1007/978-1-4614-1695-1_31
DO - 10.1007/978-1-4614-1695-1_31
M3 - Conference contribution
AN - SCOPUS:84862916966
SN - 9781461416944
T3 - Lecture Notes in Electrical Engineering
SP - 405
EP - 412
BT - Intelligent Control and Innovative Computing
T2 - International Conference on Advances in Intelligent Control and Innovative Computing
Y2 - 16 March 2011 through 18 March 2011
ER -