Ccd Color
September 10th, 2008
In a CCD how is the image brightness recorded?
A. as electric charge on each pixel
B. by recording the frequency (color) of light
C. by counting how many photons arrive
D. by recording the resistance of each pixel
E. by recording the current in each pixel
Unlike traditional cameras that use film to capture and store an image, digital cameras use a solid-state device called an image sensor. These fingernail-sized silicon chips contain millions of photosensitive diodes called photosites. In the brief flickering instant that the shutter is open, each photosite records the intensity or brightness of the light that falls on it by accumulating a charge; the more light, the higher the charge. The brightness recorded by each photosite is then stored as a set of numbers that can then be used to set the color and brightness of dots on the screen or ink on the printed page to reconstruct the image
so Answer A
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