Title :
Calibration for peripheral attenuation in intensity images
Author :
Chen, Shaoyun ; Weng, John
Author_Institution :
Dept. of Comput. Sci., Michigan State Univ., East Lansing, MI, USA
Abstract :
An image taken from a typical camera loses its intensity and contrast around the periphery due to optical attenuation. A model is derived to characterize this effect quantitatively. This model is derived for a commonly used thick lens using the sine condition, and thus, is more general than those from the Gauss geometrical optics. Based on this model, the authors developed an algorithm to calibrate the periphery attenuation. Some experimental results are presented
Keywords :
calibration; geometrical optics; image processing; lenses; light absorption; light scattering; light transmission; optical images; photographic lenses; video cameras; algorithm; calibration; contrast; intensity images; optical attenuation; peripheral attenuation; sine condition; thick lens; Attenuation; Brightness; Calibration; Geometrical optics; Lenses; Optical attenuators; Optical distortion; Optical refraction; Optical variables control; Photometry;
Conference_Titel :
Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference
Conference_Location :
Austin, TX
Print_ISBN :
0-8186-6952-7
DOI :
10.1109/ICIP.1994.413504
