Image reading method including shading correction and image...

Details Image reading method including shading correction and image... Image reading method including shading correction and image...

2005-07-19

2005-07-19

Miriam, Daniel (Department: 2621)

Image analysis

Image enhancement or restoration

Intensity, brightness, contrast, or shading correction

C358S461000

Reexamination Certificate

active

06920251

ABSTRACT:
A peak value of readings of a reference plate is calculated by a peak value calculation means. The peak value is stored by a storage means. An average value of the readings of the reference plate is calculated by an average value calculation means. Difference data between the peak value and the average value is calculated by a difference data calculation means. A variable correction coefficient is set by a correction coefficient setting means through use of the difference data and the peak value as shading correction reference data. Readings of an document image is corrected by a correction means through use of the correction coefficient. Thereby, dispersion of document image readings in shading correction is decreased.

REFERENCES:
patent: 6249615 (2001-06-01), Kunishige
patent: 6360009 (2002-03-01), Li et al.
patent: 6658164 (2003-12-01), Irving et al.
patent: 6704457 (2004-03-01), Sugiura
patent: 10-243228 (1998-09-01), None
patent: 10-271328 (1998-10-01), None

Affiliated with

Also associated with

Rating

Image reading method including shading correction and image... 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 reading method including shading correction and image..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reading method including shading correction and image... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3387901