Vision Based
Metrology
Vision-Based Metrology
Vision-Based Metrology History
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Vision-Based Metrology
refers to the technology
using optical sensors and
digital image processing
hardware and software to:
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Identify
Guide
Inspect
Measure objects
Vision-Based Metrology History
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Vision-Based
Metrology inspection
systems evolved from
the combination of
microscopes, cameras
and optical
comparators
Vision-Based Metrology History
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Vision-Based Metrology is
extensively used in general
industrial applications such as the
manufacturing of:
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Electronics
Automotive
Aerospace
Pharmaceutical
Consumer products
Vision-Based Metrology is being
utilized in the automatic
identification and data collection
market as a complementary or
alternative technology to traditional
laser scanning devices for reading
bar codes
Vision-Based Metrology History
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Early systems were integrated
into packaging lines for optical
character recognition and proved
to be a reliable way to check the
accuracy of product codes and
label information.
Today, high-resolution cameras,
advances in software and imaging
processors, and the availability of
powerful, inexpensive compact
computers have made vision
systems faster and more reliable
than ever.
When does a company need a
vision system?
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Some products require 100-percent
product inspection with documented
inspection results.
In other cases a vision system may be
needed for high production product
inspection
Vision systems provide a means of
increasing yield-that is, the ratio of good
parts to bad parts.
When a serial defect is spotted, the system
not only recognizes it but can stop the
conveyor and inform the operator of the
defect and its magnitude.
The yield factor is particularly important in
manufacturing industries that produce large
volumes, as in the compact disc and
pharmaceutical industries.
Vision-Based Metrology in
Automobile Wrecks
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Vision Based
Metrology is now
being used to focus on
the movement of
objects along with
their deformation
This is being used in
many car wreck
investigations
Vision-Based Metrology in Automobile
Wrecks
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Two consecutive images
were grabbed from a high
speed video sequence
A displacement field of a
car at a certain moment is
presented
Vision-Based Metrology in Automobile
Wrecks
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The deformation pattern
was obtained from the
principle vector analysis.
This analysis allows the
representation of the
deformation pattern.
Vision-Based Metrology in Weather
Patterns
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Vision-Based
Metrology has also
been used to study
weather patterns
Flow information from
a tornado is able to be
extracted for scientists
to attempt to learn
more about them
ICS/INEX
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INEX can be traced all the way
back to the early 1900’s when
they developed a system called
OPTI-Tron which inspected bottle
beverages
The OPTI-Tron system would
eventually become the
OPTISCAN bottle inspector; a
worldwide standard in container
inspection with thousands of units
installed.
The introduction of the
company's SuperInspector 1055
became the first commercial
machine inspection system to
integrate camera and computer
technologies
PPT Vision
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Founded in 1982, PPT specializes in
industrial applications where
accuracy, repeatability, high speed
and flexibility are important
requirements.
They are the world leader in the
design and manufacture of
completely digital 2D machine vision
systems.
PPT's 2D machine vision product
line is sold on a global basis to endusers, system integrators, and OEM's
PPT is involved primarily in:
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Electronics
Semiconductor components
Automotive
Medical devices
Pharmaceutical and packaged goods
Quality Inspection at Work
Polymer Membrane:
Note texture defects
Stamped Metal Package:
Note scratch on grinded surface
Machined Aluminum Bar:
Note tool-chatter marks
Vision System Pictures
Missing Fuse
References
http://www.cranfield.ac.uk/sme/amac/research/metrology
/tornado.htm
http://www.cranfield.ac.uk/sme/amac/research/metrology
/carcrush.htm
http://www.qualitydigest.com/mar98/html/vision.html
http://www.rvsi.com/Pages/about.htm
http://www.inexvision.com
http://www.pptvision.com
http://www.visionxinc.com