Analysis of the compensating mechanism of a color CCD camera for changes of light

Montserrat Corbalan-Fuertes; Maria Sagrario Millan Garcia-Verela; Maria Josefa Yzuel

doi:10.1117/12.324137

7 September 1998 Analysis of the compensating mechanism of a color CCD camera for changes of light

Montserrat Corbalan-Fuertes, Maria Sagrario Millan Garcia-Verela, Maria Josefa Yzuel

Proceedings Volume 3409, Electronic Imaging: Processing, Printing, and Publishing in Color; (1998) https://doi.org/10.1117/12.324137
Event: SYBEN-Broadband European Networks and Electronic Image Capture and Publishing, 1998, Zurich, Switzerland

Abstract

Color cameras usually contain a device called white balance that allows one to capture a white reference without predominant colors. This adjustment works when the light source changes, in order to compensate for possible variations of the spectral radiant power distribution of the source. If the compensation is not totally correct, then variations in the RGB values of a color image are usually registered. We have analyzed the compensating mechanism of white balance in a color CCD camera. Changes between common lights -- fluorescent, incandescent and daylight -- have been considered. We have carried out two experiments. In the first one, we have adjusted the white balance for a given lighting and it has not been readjusted even though the light source changed. In the second one, we have adjusted the white balance for each change of light source. The discussion of the results is based on the registered variations obtained in both experiments after sequentially capturing one hundred color sheets covering the visible spectrum under separate illumination.

Citation Download Citation

Montserrat Corbalan-Fuertes, Maria Sagrario Millan Garcia-Verela, and Maria Josefa Yzuel "Analysis of the compensating mechanism of a color CCD camera for changes of light", Proc. SPIE 3409, Electronic Imaging: Processing, Printing, and Publishing in Color, (7 September 1998); https://doi.org/10.1117/12.324137

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available