Sequential detection of web defects
Abstract
A system for detecting defects on a moving web having a sequential series of identical frames uses an imaging device to form a real-time camera image of a frame and a comparitor to comparing elements of the camera image with corresponding elements of an image of an exemplar frame. The comparitor provides an acceptable indication if the pair of elements are determined to be statistically identical; and a defective indication if the pair of elements are determined to be statistically not identical. If the pair of elements is neither acceptable nor defective, the comparitor recursively compares the element of said exemplar frame with corresponding elements of other frames on said web until one of the acceptable or defective indications occur.
- Inventors:
-
- Albuquerque, NM
- Cedar Crest, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 873888
- Patent Number(s):
- 6266437
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
G - PHYSICS G06 - COMPUTING G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- sequential; detection; web; defects; detecting; moving; series; identical; frames; imaging; device; form; real-time; camera; image; frame; comparitor; comparing; elements; corresponding; exemplar; provides; acceptable; indication; pair; determined; statistically; defective; neither; nor; recursively; compares; element; indications; occur; imaging device; moving web; camera image; sequential series; detecting defects; time camera; corresponding element; /382/348/356/
Citation Formats
Eichel, Paul H, Sleefe, Gerard E, Stalker, K Terry, and Yee, Amy A. Sequential detection of web defects. United States: N. p., 2001.
Web.
Eichel, Paul H, Sleefe, Gerard E, Stalker, K Terry, & Yee, Amy A. Sequential detection of web defects. United States.
Eichel, Paul H, Sleefe, Gerard E, Stalker, K Terry, and Yee, Amy A. Mon .
"Sequential detection of web defects". United States. https://www.osti.gov/servlets/purl/873888.
@article{osti_873888,
title = {Sequential detection of web defects},
author = {Eichel, Paul H and Sleefe, Gerard E and Stalker, K Terry and Yee, Amy A},
abstractNote = {A system for detecting defects on a moving web having a sequential series of identical frames uses an imaging device to form a real-time camera image of a frame and a comparitor to comparing elements of the camera image with corresponding elements of an image of an exemplar frame. The comparitor provides an acceptable indication if the pair of elements are determined to be statistically identical; and a defective indication if the pair of elements are determined to be statistically not identical. If the pair of elements is neither acceptable nor defective, the comparitor recursively compares the element of said exemplar frame with corresponding elements of other frames on said web until one of the acceptable or defective indications occur.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2001},
month = {Mon Jan 01 00:00:00 EST 2001}
}