CA2062991A1 - Optical imaging system for fabric seam detection - Google Patents
Optical imaging system for fabric seam detectionInfo
- Publication number
- CA2062991A1 CA2062991A1 CA 2062991 CA2062991A CA2062991A1 CA 2062991 A1 CA2062991 A1 CA 2062991A1 CA 2062991 CA2062991 CA 2062991 CA 2062991 A CA2062991 A CA 2062991A CA 2062991 A1 CA2062991 A1 CA 2062991A1
- Authority
- CA
- Canada
- Prior art keywords
- imaging system
- optical imaging
- seam
- periodic pattern
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title abstract 2
- 239000004744 fabric Substances 0.000 title abstract 2
- 238000012634 optical imaging Methods 0.000 title abstract 2
- 230000000737 periodic effect Effects 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 1
Landscapes
- Treatment Of Fiber Materials (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
A non-contacting optical imaging system for seam or other periodic pattern detection for a web of material such as a strip of fabric is disclosed in which a line scan camera is used to capture a seam or other periodic pattern image and the electrical output from the camera is converted to an alternating current signal and then to a direct current signal which is proportional to the presence or absence of a seam other periodic pattern. The DC signal is integrated and then compared to a preset reference value to produce a signal for driving an alarm, display or machine control devices.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68861491A | 1991-03-13 | 1991-03-13 | |
US07/688,614 | 1991-03-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2062991A1 true CA2062991A1 (en) | 1992-09-14 |
CA2062991C CA2062991C (en) | 1998-09-22 |
Family
ID=24765090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2062991 Expired - Fee Related CA2062991C (en) | 1991-03-13 | 1992-03-13 | Optical imaging system for fabric seam detection |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2062991C (en) |
-
1992
- 1992-03-13 CA CA 2062991 patent/CA2062991C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2062991C (en) | 1998-09-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |