Optical image processing method and system to perform unsharp ma

Details Optical image processing method and system to perform unsharp ma Optical image processing method and system to perform unsharp ma

1988-04-22

1990-04-17

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358101, 358168, 35821313, 378 99, H04N 315, H04N 718

Patent

active

049185349

ABSTRACT:
An optical image processing method and system in a radiographic system, wherein an image of an object is produced by an image intensifier and converted to video signal by a television (TV) camera system. A liquid crystal display (LCD) is placed bewteen the image intensifier and the T.V. camera system at a location shifted from a focal plane of the T.V. camera system. The liquid crystal display defines plural pixels which are controllable so that light produced by the image intensifier and impinging on the plural LCD pixels can be selectively attenuated by application of selected control signals to the LCD. Control signals are generated selectively based on predetermined parameters of the radiographic system and the image. These control signals are applied to the LCD to perform selective attenuation and corresponding dynamic range compression of light passing through respective LCD pixels, thereby to perform unsharp masking of the image produced by the image intensifier using the LCD.

REFERENCES:
patent: 4388646 (1983-06-01), Strother
patent: 4453181 (1984-06-01), Munakata
patent: 4546248 (1985-10-01), Craig
patent: 4652916 (1987-03-01), Suzaki
J. A. Sorenson et al., Invest. Radiol. 16, 281 (1981).
W. W. Peppler et al., Presented at the Chest Imaging Conference-87, Madison, Wisconsin, 1987.

Affiliated with

Also associated with

Rating

Optical image processing method and system to perform unsharp ma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical image processing method and system to perform unsharp ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical image processing method and system to perform unsharp ma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1056679