Estimation bias from using nonlinear Fourier plane correlators for sub-pixel image shift measurement and implications for the binary joint transform correlator

2007 ◽  
Author(s):  
Thomas J. Grycewicz ◽  
Christopher J. Florio ◽  
Geoffrey A. Franz ◽  
Ross E. Robinson
Keyword(s):  
Estimation Bias ◽  
Joint Transform Correlator ◽  
Shift Measurement ◽  
Fourier Plane ◽  
Pixel Image

Measurement of sub-pixel image motion based on joint transform correlator

2014 ◽  
Author(s):  
Xue-ting Hong ◽  
Yi-xian Qian ◽  
Xiao-wei Shi ◽  
Deng-hui Li
Keyword(s):  
Image Motion ◽  
Joint Transform Correlator ◽  
Pixel Image

Fourier-plane encryption technique based on removing the effect of phase terms in a joint transform correlator

2001 ◽  
Vol 8 (6) ◽  
pp. 413-415 ◽  
Author(s):  
Se-Joon Park ◽  
Jong-Yun Kim ◽  
Jang-Keun Bae ◽  
Soo-Joong Kim
Keyword(s):  
Joint Transform Correlator ◽  
Fourier Plane

Fourier plane and optical processing for sub-pixel image registration

2006 ◽  
Author(s):  
Thomas J. Grycewicz ◽  
Brian E. Evans ◽  
Christopher J. Florio ◽  
Theresa M. Christian
Keyword(s):  
Image Registration ◽  
Optical Processing ◽  
Fourier Plane ◽  
Pixel Image

Research on the Measurement Method of the Sub-Pixel Image Motion Based on Optical Correlator

2011 ◽  
Vol 271-273 ◽  
pp. 7-12
Author(s):  
Chao Fan ◽  
Tie Jun Yang ◽  
Hong Liang Fu ◽  
Yi Tao Liang
Keyword(s):  
Measurement Error ◽  
High Speed ◽  
Measurement Method ◽  
Frame Rate ◽  
Image Motion ◽  
High Speed Camera ◽  
Joint Transform Correlator ◽  
Experiment Platform ◽  
Pixel Image ◽  
Set Up

To measure the sub-pixel image motion of the sequence images which are captured by the high-speed camera at the high frame rate with poor SNR, the joint transform correlator (JTC) is used. The relative image motion of the two adjacent images can be measured by inputting these images into the correlator. The principle of this method is described, and the effect of the defocussing of the CCD in the JTC on the accuracy is analyzed. To research the measurement performance of the JTC concretely, the experiment platform is set up. By using different images with different image motion, the results showed that, the JTC can measure the sub-pixel image motion entirely even for the images with SNR=1, and the measurement error submits to the normal distribution, which implies zero mean and the RMS is no more than 0.12 pixel under the conspicuous level is equal to 0.05.

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