Television – Camera – system and detail – Combined image signal generator and general image signal...
Patent
1995-11-16
2000-03-21
Ho, Tuan
Television
Camera, system and detail
Combined image signal generator and general image signal...
348256, 348279, 348645, 348679, H04N 552, H04N 5335, H04N 964, H04N 968
Patent
active
060408588
ABSTRACT:
Disclosed is an image processing method of expanding the dynamic range by determining a saturated or noise region in an image signal and replacing the image signal with a proper image signal. A threshold value is set in units of colors on the basis of a standard image signal for each color, which is obtained upon sensing an image in a standard exposure, and a non-standard image signal for each color, which is obtained upon sensing the image in a non-standard exposure. A saturated or noise region is determined by applying the threshold value set in units of colors to the standard image signal. A region determined as a saturated or noise region is replaced with the non-standard image signal.
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Canon Kabushiki Kaisha
Ho Tuan
Vu Ngoc-Yen
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