Color sequential scanner incorporating a synchronized...

Details Color sequential scanner incorporating a synchronized... Color sequential scanner incorporating a synchronized...

H - Electricity

04

N

H04N 1/46 (2006.01) H04N 1/40 (2006.01) H04N 1/48 (2006.01) H04N 5/235 (2006.01) H04N 5/253 (2006.01) H04N 9/73 (2006.01)

Patent

CA 2065877

COLOR SEQUENTIAL SCANNER INCORPORATING A SYNCHRONIZED VARIABLE EXPOSURE SHUTTER ABSTRACT This abstract describes an apparatus for providing accurate white balance for images from a color sequential image scanner while minimizing the object illumination level. A shutter synchronized to the phase of a fluorescent light source allows for different exposure times for the red, green and blue image captures, in order to achieve proper white balance while maximizing the signal to noise ratio. By synchronizing the shutter with the AC voltage supplied to the illumination source, light level variations from one image capture to another are minimized.

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