NDLI: Study on Vignetting Simulation Method of Infrared Optical System

Content Provider	IEEE Xplore Digital Library
Author	Zhu Min
Copyright Year	2009
Abstract	Vignetting effect reflects a geometric phenomenon that the radiation illumination which reaches the detector decreases gradually with the increase of off-axis distance. Vignetting effect has become one of the defects of infrared image, and it can’t be ignored. So the exact modeling of the vignetting effect is vital for generating an infrared simulation image through optical system. A simulation method of the vignetting effect resulted from infrared optical system is presented. The cause of the vignetting effect is analyzed theoretically by using ray tracing method, and the model of the vignetting effect is established. Then simulation is carried out for the vignetting effect based on image pixel processing. The simulated result is presented. Experiments show that the simulation method of vignetting effect is effective, which is useful for increasing the fidelity of the generated infrared image.
Starting Page	675
Ending Page	678
File Size	606996
Page Count	4
File Format	PDF
ISBN	9780769536828
DOI	10.1109/ESIAT.2009.365
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-04
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Infrared detectors simulation Optical distortion Optical imaging Analytical models infrared optical system vignetting Infrared imaging Image generation Apertures Ray tracing Optical noise Lenses
Content Type	Text
Resource Type	Article

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