ENDOSCOPE SYSTEM AND METHOD OF OPERATING ENDOSCOPE SYSTEM
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United States of America Patent
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Feb 2, 2017
app pub date -
Jul 25, 2016
filing date -
Jul 31, 2015
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Abstract
A light source including LEDs for emitting violet, blue, green and red light is controlled, to change over a first emission mode for emitting light of all the four colors for broadband illumination, and a second emission mode for emitting green light for correction. A color image sensor having blue, green and red pixels is controlled, and outputs B1, G1 and R1 image signals by imaging in the first emission mode, and B2, G2 and R2 image signals by imaging in the second emission mode. The B2 image signal of the blue pixels in the second emission mode is subtracted from the B1 image signal of the blue pixels in the first emission mode. A high quality image is generated according to the B1 image signal after the subtraction. Thus, occurrence of poor quality of color rendering can be prevented.
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