TY - GEN
T1 - Using ensemble empirical mode decomposition to improve the static fringe analysis in optical testing
AU - Chen, Yu Ta
AU - Ou-Yang, Mang
AU - Wu, Shuen De
AU - Lin, Shiou Gwo
AU - Kuo, Yi Ting
AU - Lee, Cheng Chung
PY - 2012
Y1 - 2012
N2 - Static fringe analysis is an important skill to reconstruct the surface profile of the tested optics. The mixed image is simulated by the tilt aberration, and several methods of the reducing mixing fringe are utilized to reconstruct the optical paths difference (OPD) profile of the mixed image. In this paper, we propose the ensemble empirical mode decomposition (EEMD) method to decompose the mixed image into several intrinsic mode functions (IMFs), and then removing one or more IMFs to reduce the influence of the mixing fringe in the mixed image. The procedure of reducing mixing fringe can reconstruct the OPD profile of the mixed image easily. In the simulation, using EEMD to reduce the influence of the mixing fringe, the root mean square (RMS) value of the OPD is 0.081 waves as the residue image subtracted from the OPD profiles of original image. In the experiment, the EEMD method reducing the noise of the mixing fringe has the advantage on the high frequency as spherical aberration.
AB - Static fringe analysis is an important skill to reconstruct the surface profile of the tested optics. The mixed image is simulated by the tilt aberration, and several methods of the reducing mixing fringe are utilized to reconstruct the optical paths difference (OPD) profile of the mixed image. In this paper, we propose the ensemble empirical mode decomposition (EEMD) method to decompose the mixed image into several intrinsic mode functions (IMFs), and then removing one or more IMFs to reduce the influence of the mixing fringe in the mixed image. The procedure of reducing mixing fringe can reconstruct the OPD profile of the mixed image easily. In the simulation, using EEMD to reduce the influence of the mixing fringe, the root mean square (RMS) value of the OPD is 0.081 waves as the residue image subtracted from the OPD profiles of original image. In the experiment, the EEMD method reducing the noise of the mixing fringe has the advantage on the high frequency as spherical aberration.
KW - ensemble empirical mode decomposition
KW - optical testing
KW - static fringe analysis
UR - http://www.scopus.com/inward/record.url?scp=84864214909&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864214909&partnerID=8YFLogxK
U2 - 10.1109/I2MTC.2012.6229233
DO - 10.1109/I2MTC.2012.6229233
M3 - Conference contribution
AN - SCOPUS:84864214909
SN - 9781457717710
T3 - 2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings
SP - 249
EP - 253
BT - 2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings
T2 - 2012 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2012
Y2 - 13 May 2012 through 16 May 2012
ER -