Color Constancy by Marc Ebner
Wiley; 1 edition | June 5, 2007 | English | ISBN: 0470058293 | 408 pages | PDF | 8 MB
A human observer is able to recognize the color of objects irrespective of the light used to illuminate them. This is called color constancy. A digital camera uses a sensor to measure the reflected light, meaning that the measured color at each pixel varies according to the color of the illuminant. Therefore, the resulting colors may not be the same as the colors that were perceived by the observer.