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Proceedings Paper

Study on the measurement of image motion between sequential images based on optical correlator
Author(s): Chao Fan; Ying-cai Li; Yi-tao Liang; Ning-ning Sun
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Paper Abstract

To measure sub-pixel image motion of sequential images which is captured at high frame rate, the joint transform correlator (JTC) is used. The relative image motion of two adjacent images can be measured by inputting these images into JTC. The principle of this method is described, photo-electrical devices are selected, and an experimental platform is built. Based on which, the measurement performances of JTC are researched, including the influence of scene structure on measurement accuracy, effect of the size of input image on measurement accuracy, and the measurement range of the image motion of JTC. After doing these, the over-all properties of JTC is verified by using a sample which containes 50 different random image motions. The results show that, the JTC can measure sub-pixel image motion of two adjacent images entirely, and the accuracy is not variable with the contents of input images. The measurement error submits to normal distribution, which means zero and RMS is no more than 0.12 pixels under conspicuous level equal to 0.05. Lastly, the source of error which deteriorates measurement accuracy is analyzed simply.

Paper Details

Date Published: 20 May 2009
PDF: 6 pages
Proc. SPIE 7283, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 72831H (20 May 2009); doi: 10.1117/12.828667
Show Author Affiliations
Chao Fan, Henan Univ. of Technology (China)
Ying-cai Li, Institute of Optics and Precision Mechanics (China)
Yi-tao Liang, Henan Univ. of Technology (China)
Ning-ning Sun, Henan Univ. of Technology (China)


Published in SPIE Proceedings Vol. 7283:
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Yudong Zhang; James C. Wyant; Robert A. Smythe; Hexin Wang, Editor(s)

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