Method and apparatus for pixel non-uniformity correction

Details Method and apparatus for pixel non-uniformity correction Method and apparatus for pixel non-uniformity correction

1990-07-31

1991-09-10

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821316, 35821317, 358 29C, 358164, 358168, 358174, 358166, H04N 5335

Patent

active

050478613

ABSTRACT:
An apparatus for reading and correcting an image including: a sensor which receives light and converts it to electrical signals; a digitizing unit to convert the analog image signal to a digital signal; a calibration unit to capture calibration data for each pixel under known illumination conditions and to produce individual correction values for each pixel and a correction unit comprised of a look-up table addressed by both the digital image signal and the correction values which corrects the digital image data.

REFERENCES:
patent: 4216503 (1980-08-01), Wiggins
patent: 4602291 (1986-07-01), Temes
patent: 4698685 (1987-10-01), Beaverson
patent: 4833533 (1989-05-01), Augusti
patent: 4835606 (1989-05-01), Peck
patent: 4839866 (1989-06-01), Ward
patent: 4894721 (1990-01-01), Matsuda
patent: 4912558 (1990-03-01), Easterly
patent: 4920428 (1990-04-01), Lin

Affiliated with

Also associated with

Rating

Method and apparatus for pixel non-uniformity correction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for pixel non-uniformity correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for pixel non-uniformity correction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-544486