Quantitative characterization of the limiting resolution of a microscanning imager
JOSA A, Vol. 23, Issue 8, pp. 1865-1869 (2006)
http://dx.doi.org/10.1364/JOSAA.23.001865
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Abstract
A method to determine the limiting resolution of a microscanning imager is proposed. Specifically, both the sample-scene phase effects and aliasing effects due to microscanning are modeled in this method by combining the pixel transfer function and the squeeze modulation transfer function. Further, this model is used to calculate the amount of improvement from typical microscanning modes to the limiting resolution of the imager focusing on various blur factors. Analytical results show that the limiting resolution of the microscanning imager is closely related to microscanning modes. The amount of improvement from different microscanning modes to the limiting resolution is different and is closely associated with the fill factor and the blur factors. The conclusion obtained will be helpful in choosing the optimum microscanning mode according to the fill factor of the detector and system blur factors.
© 2006 Optical Society of America
OCIS Codes
(040.1520) Detectors : CCD, charge-coupled device
(100.6640) Image processing : Superresolution
(110.3000) Imaging systems : Image quality assessment
(110.4100) Imaging systems : Modulation transfer function
ToC Category:
Imaging Systems
History
Original Manuscript: November 23, 2005
Revised Manuscript: February 8, 2006
Manuscript Accepted: February 10, 2006
Citation
Xiao-Rui Wang and Jian-Qi Zhang, "Quantitative characterization of the limiting resolution of a microscanning imager," J. Opt. Soc. Am. A 23, 1865-1869 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-8-1865
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