Image scanning arrangement

Details Image scanning arrangement Image scanning arrangement

1985-02-15

1986-09-23

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 66, G06K 710

Patent

active

046139877

ABSTRACT:
A light-transmissive device, illustratively a glass plate, is disposed adjacent to a plurality of light-emissive pixel locations, illustratively the pixel locations of a cathode ray tube (CRT). The glass plate entraps light originating from the CRT at least when an object, such as a document, is placed on one of the surfaces of the light-transmissive device, the amount of light that is entrapped being a function of the reflectivity characteristics of the document. The pixel locations are successively energized and a light detection signal indicative of the level of the entrapped light is generated by photodetection circuitry disposed adjacent to the edge of the glass plate. A pixel signal is stored for each energized pixel location, that signal being a function of the level of the light detection signal during the time that that pixel location was energized. The ensemble of stored pixel signals can then, for example, be displayed.

REFERENCES:
patent: 4201978 (1980-05-01), Nally
patent: 4281313 (1981-07-01), Boldridge, Jr.
patent: 4343991 (1982-08-01), Fujiwara et al.

Affiliated with

Also associated with

Rating

Image scanning arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image scanning arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image scanning arrangement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-769926