Television – Special applications – With endoscope
Reexamination Certificate
2006-05-09
2006-05-09
Rao, Andy (Department: 2613)
Television
Special applications
With endoscope
C348S068000
Reexamination Certificate
active
07042488
ABSTRACT:
In an electronic endoscope of the present invention, an edge detection circuit detects a down edge section and an up edge section of both ends of a blood vessel in a width direction based on a G signal output from an RGB color conversion circuit, an R coefficient selector and a B coefficient selector select, for example, a coefficient smaller than 1 for the detected down edge section and select, for example, a coefficient larger than 1 for the up edge section, and a multiplier multiplies an R signal and a B signal by these coefficients. As a result, both ends of the blood vessel are highlighted with a left end part expressed blackish and a right end part expressed reddish, making it possible to clearly display blood vessels in mucous membranes on a monitor. It is also possible to detect phases on a coordinate system where an R-Y signal is set on a vertical axis and a B-Y signal is set on a horizontal axis, compare these phases with reference phase θ1of blood vessel colors and extract signals of blood vessel colors.
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Abe Kazunori
Ayame Daisuke
Higuchi Mitsuru
Negishi Keiichi
Takeuchi Shinji
Fujinon Corporation
Rao Andy
Snider Ronald R.
Snider & Associates
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