Abstract
According to the radiometric calibration experiments in laboratory,the reflector-based mosaic CCD camera's image non-uniformity caused by vignetting phenomenon was corrected.Firstly,the image un-uniformity reasons of reflector-based mosaic CCD camera are analyzed,and the irradiance deviation received by different CCD pixels in focal plane is the essential reason for images' non-uniformity.Then,the CCD pixels' irradiance responsivity calibration experiment and the whole camera's non-uniformity calibration experiment were carried out in the laboratory,and the relationship between each pixel's receiving irradiance and camera's incident radiance was built.Lastly,a correction algorithm is put forward based on the above relationship to calculate CCD pixels' correction factors,and the correction factors were used to correct the vignetting image.The correct experiment indicates that,within a certain range of incident radiance,the non-uniformity of original calibration images areabove 16%,and after correction,the values decreased to 1% or less.Besides,the correction factors were used to correct the images of outdoor experiments and it works very well.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
