Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1988-04-19
1989-05-16
Britton, Howard W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
128 6, 358728, H04N 973, A61B 104, A61B 106
Patent
active
048314374
ABSTRACT:
A video endoscope system adjustable color balance in which a color balance adjusting circuit is adjusted so that a color of an ordinary object image or of a standard object image or of an image caused by a signal delivered from a standard color signal generator which is displayed on a TV monitor for observation is the same, as that displayed on a reference color display means, or so that chromaticity of the color of the standard object image or of the image caused by the signal delivered from the standard color signal generator which is displayed on the TV monitor for observation is measured by a chromaticity measuring device and approached to a standard value, in order to make it possible to eliminate positively color variations and make color balance adjustment with high accuracy in regard to a color picture image displayed on the TV monitor of the video endoscope system. The reference color display is a TV monitor adjusted to display a reference color in predetermined chromaticity through other color balance adjusting circuit connected to an electronic image pickup system, or a standard monitor displaying the color in virtue of an input of a color signal delivered from the standard color signal generator, or a standard color display. An automatic white balance adjustment may also be provided to make adjustment so that, when the standard object is picked up, an input voltage ratio of each color to the color balance adjusting circuit becomes constant. It is desirable that a concave surface with good diffusibility is employed as the standard object and a tip porton of an endoscope is arranged in the concave surface for color balance.
REFERENCES:
patent: 4710800 (1987-12-01), Fearing
patent: 4716457 (1987-12-01), Matsuo
patent: 4737842 (1988-04-01), Nagasaki
patent: 4742388 (1988-05-01), Cooper
patent: 4746974 (1988-05-01), Matsuo
Nishioka Kimihiko
Uehara Masao
Britton Howard W.
Olympus Optical Co,. Ltd.
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