Image analysis – Applications – Document or print quality inspection
Reexamination Certificate
2007-08-21
2007-08-21
Mehta, Bhavesh M (Department: 2624)
Image analysis
Applications
Document or print quality inspection
C382S141000, C382S217000, C382S257000, C348S086000, C348S125000, C356S237100
Reexamination Certificate
active
10667075
ABSTRACT:
A method of inspecting a defect on a surface of a printed matter includes a step of applying a gray scale erosion filter to a non-defect surface of a printed matter to prepare a gray scale erosion filter applied image and then adding a predetermined density value to the gray scale erosion filter applied image, thereby preparing a reference image, a step of subtracting a captured image of the surface of the printed matter to be inspected from the reference image, thereby preparing a differential image, and a step of applying a density compensation process to the differential image to prepare a density compensated image, then applying an edge detection filter to the density compensated image to prepare an edge detection filter applied image and then converting the edge detection filter applied image into binary data according to a predetermined threshold value.
REFERENCES:
patent: 5365596 (1994-11-01), Dante et al.
patent: 5828771 (1998-10-01), Bloomberg
patent: 5848189 (1998-12-01), Pearson et al.
patent: 6061476 (2000-05-01), Nichani
patent: 6269194 (2001-07-01), Nichani
patent: 7017492 (2006-03-01), Seymour
patent: 2005/0074140 (2005-04-01), Grasso et al.
patent: 06343293 (1995-03-01), None
patent: 0703698 (1996-03-01), None
patent: 02163879 (1990-06-01), None
patent: 06201611 (1994-07-01), None
patent: 0792103 (1995-04-01), None
patent: 07-186375 (1995-07-01), None
patent: 08207258 (1996-08-01), None
Shikami Masaki
Torita Hirofumi
Berliner & Associates
Carter Aaron W
Mehta Bhavesh M
Nitto Denko Corporation
LandOfFree
Print inspection method and print inspection apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Print inspection method and print inspection apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Print inspection method and print inspection apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3852817