Image input device and method for providing scanning artifact de

Details Image input device and method for providing scanning artifact de Image input device and method for providing scanning artifact de

1998-01-08

1999-09-28

Le, Que T.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250235, 358464, 382275, H01J 4014

Patent

active

059592907

ABSTRACT:
A system and method which enables the location and orientation of an image to be determined without introducing scanning artifacts into the rendered image. The system utilizes a separate set of sensors on a scanning bar that are sensitive to a wavelength of light outside the range of wavelengths of the typical sensors found on the scanning bar, such as red, green, or blue. Moreover, the system includes a light source which is capable of emitting the wavelength of light that is outside this range of wavelength of light. Thus, whenever the additional set of sensors detect light, the system would determine that the light was due to a scanning artifact, such as a hole, rip, or dog ear in the original document being scanned. Furthermore, the system would include a process which measures the variations of the image signal in the fastscan and slowscan directions, as well as, the gray level of the video signal from these various measurements, the system would develop a cost value as to the certainty as whether the signal represents a scanning artifact. In such a system, the backing would be embedded with a pattern which would have a predetermined variation in a fastscan direction but have little or no variation in a slowscan direction.

REFERENCES:
patent: 4853795 (1989-08-01), Morton et al.
patent: 5017963 (1991-05-01), Tuhro
patent: 5317420 (1994-05-01), Kuwahara
patent: 5384621 (1995-01-01), Hatch et al.
patent: 5701365 (1997-12-01), Harrington et al.
patent: 5761339 (1998-06-01), Ikeshoji et al.

Affiliated with

Also associated with

Rating

Image input device and method for providing scanning artifact de 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 input device and method for providing scanning artifact de, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image input device and method for providing scanning artifact de will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-706105