TY - GEN
T1 - Applying PSD analysis in ring-structured-light 3D measurement
AU - Leng, Huiwen
AU - Xu, Chunguang
AU - Feng, Zhongwei
AU - Xiao, Dingguo
PY - 2009
Y1 - 2009
N2 - Error elimination is very important in 3D measurement with ring-structured-light. A method has been proposed, which includes the following procedures. First, acquire ring-structured-light images and extract their stripe center. Second, find the base-circle center of the stripe center locus by curve fitting, using the least squares method. Subsequently unfold the stripe center locus along its basecircle. In the waveform of the unfolded view, there exist an eccentricity error component and an ellipse shape error component. The frequencies of these two error components are different from the frequency of detail component. They can be separated in the unfolded view by power spectrum density (PSD) analysis. Based on their formation principles, eccentricity error and ellipse error can be separated and eliminated, and the accuracy of the measurement can be improved. Experiments have demonstrate its applicability.
AB - Error elimination is very important in 3D measurement with ring-structured-light. A method has been proposed, which includes the following procedures. First, acquire ring-structured-light images and extract their stripe center. Second, find the base-circle center of the stripe center locus by curve fitting, using the least squares method. Subsequently unfold the stripe center locus along its basecircle. In the waveform of the unfolded view, there exist an eccentricity error component and an ellipse shape error component. The frequencies of these two error components are different from the frequency of detail component. They can be separated in the unfolded view by power spectrum density (PSD) analysis. Based on their formation principles, eccentricity error and ellipse error can be separated and eliminated, and the accuracy of the measurement can be improved. Experiments have demonstrate its applicability.
KW - Circle-center position error
KW - Computer aided engineering
KW - Ellipse error
KW - Laser measurement applications
KW - Power spectrum density
KW - Ring-structured-light
UR - http://www.scopus.com/inward/record.url?scp=70350761590&partnerID=8YFLogxK
U2 - 10.1109/JCAI.2009.131
DO - 10.1109/JCAI.2009.131
M3 - Conference contribution
AN - SCOPUS:70350761590
SN - 9780769536156
T3 - IJCAI International Joint Conference on Artificial Intelligence
SP - 376
EP - 380
BT - Proceedings - 1st IITA International Joint Conference on Artificial Intelligence, JCAI 2009
T2 - 1st IITA International Joint Conference on Artificial Intelligence, JCAI 2009
Y2 - 25 April 2009 through 26 April 2009
ER -
