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Get the most from your
Get the most from your
Mentor Visual iQ*!
Mentor Visual iQ*!
(Applies to Mentor Visual iQ software version 2.5 or later)
(Applies to Mentor Visual iQ software version 2.5 or later)
TABLE OF CONTENTS
TABLE OF CONTENTS
Introduction ................................................................................................................................................................................................. 100
Introduction ...................................................................................................................................................................................................100
The Importance of Accurate Measurement .................................................................................................................................. 100
The Importance of Accurate Measurement .................................................................................................................................100
Enabling Technologies and Technology ......................................................................................................................................... 100
Enabling Technologies and Technology ..........................................................................................................................................100
Measurement Technologies
3D Phase Measurement ...................................................................................................................................................................................................................................101
3D Phase Measurement .................................................................................................................................................................................................................................. 101
3D Stereo Measurement ..................................................................................................................................................................................................................................101
3D Stereo Measurement ................................................................................................................................................................................................................................. 101
Stereo Measurement .........................................................................................................................................................................................................................................101
Stereo Measurement ........................................................................................................................................................................................................................................ 101
Comparison ......................................................................................................................................................................................................................................................... 101
Comparison ............................................................................................................................................................................................................................................................101
PC Re-Measurement ..........................................................................................................................................................................................................................................101
PC Re-Measurement ......................................................................................................................................................................................................................................... 101
3D Measurement Best Practices: Techniques and Tips ........................................................................................................... 102
3D Measurement Best Practices: Techniques and Tips ..........................................................................................................102
Choosing the Right Measurement for Your Application .......................................................................................................... 103
Choosing the Right Measurement for Your Application ...........................................................................................................103
Measurement Types
Length .......................................................................................................................................................................................................................................................................104
Length .................................................................................................................................................................................................................................................................... 104
Point to Line ...........................................................................................................................................................................................................................................................105
Point to Line .......................................................................................................................................................................................................................................................... 105
Depth .................................................................................................................................................................................................................................................................... 106
Depth .........................................................................................................................................................................................................................................................................106
Area ............................................................................................................................................................................................................................................................................107
Area ....................................................................................................................................................................................................................................................................... 107
Multi-Segment ..................................................................................................................................................................................................................................................... 107
Multi-Segment ...................................................................................................................................................................................................................................................... 107
Depth Profile ......................................................................................................................................................................................................................................................... 108
Depth Profile .......................................................................................................................................................................................................................................................... 108
Area Depth Profile ...............................................................................................................................................................................................................................................109
Area Depth Profile ............................................................................................................................................................................................................................................. 109
Measurement Plane ......................................................................................................................................................................................................................................... 110
Measurement Plane ...........................................................................................................................................................................................................................................110
Measurement Accuracy Data .............................................................................................................................................................. 115
Measurement Accuracy Data ............................................................................................................................................................... 115
3D Measurement Part Numbers and Specifications ................................................................................................................ 117
3D Measurement Part Numbers and Specifications .................................................................................................................117
Glossary of Terms .......................................................................................................................................................................................118
Glossary of Terms ..................................................................................................................................................................................... 118
2
100
Introduction
Introduction
Advances in image based 3D measurement are making the video borescope an increasingly powerful tool in the inspector's
Advances in image based 3D measurement are making the video borescope an increasingly powerful tool in the inspector's
toolbox. While in the past, inspectors could identify indications and capture images; today's advanced video borescopes allow
toolbox. While in the past, inspectors could identify indications and capture images; today's advanced video borescopes allow
them to map, measure, and analyze indications in 3D and to share images and data wirelessly with remote experts. With
them to map, measure, and analyze indications in 3D and to share images and data wirelessly with remote experts. With
enhanced precision and accuracy, this new functionality is allowing video inspection to complement, or in some cases, replace
enhanced precision and accuracy, this new functionality is allowing video inspection to complement, or in some cases, replace
other NDT modalities.
other NDT modalities.
This guide is designed to help inspectors and asset owners understand measurement technologies available on the Mentor
This guide is designed to help inspectors and asset owners understand measurement technologies available on the Mentor
Visual iQ and how they can be properly applied to improve decision making in remote visual inspection applications.
Visual iQ and how they can be properly applied to improve decision making in remote visual inspection applications.
Many video borescope owners underutilize the advanced features of their inspection equipment due to a lack of training. Using
Many video borescope owners underutilize the advanced features of their inspection equipment due to a lack of training. Using
this handbook as a guide, you can learn to apply new techniques, and make your expertise a competitive advantage for your
this handbook as a guide, you can learn to apply new techniques, and make your expertise a competitive advantage for your
organization.
organization.
The Importance of Accurate Measurement
The Importance of Accurate Measurement
Remote visual inspection is frequently used to determine the serviceability of an asset. That determination is often based on the
Remote visual inspection is frequently used to determine the serviceability of an asset. That determination is often based on the
measurement of an indication or feature inside the asset. Inaccurate measurements can result in unnecessary downtime, scrap,
measurement of an indication or feature inside the asset. Inaccurate measurements can result in unnecessary downtime, scrap,
and maintenance costs as well as safety or reliability risks. It is therefore critical that inspectors understand how to properly apply
and maintenance costs as well as safety or reliability risks. It is therefore critical that inspectors understand how to properly
available measurement capabilities to maximize the quality of decision making.
apply available measurement capabilities to maximize the quality of decision making.
With traditional measurement technologies, such as stereo, shadow, or comparison, the inspector has little ability to assess either
With traditional measurement technologies, such as stereo, shadow, or comparison, the inspector has little ability to assess
the quality of the data used to compute the measurement result or the correctness of the cursor placement for the desired
either the quality of the data used to compute the measurement result or the correctness of the cursor placement for the
measurement. This can often lead to inaccurate measurements and potentially to costly incorrect decisions.
desired measurement. This can often lead to inaccurate measurements and potentially to costly incorrect decisions.
The latest 3D measurement technologies allow the real-time use of a 3D XYZ point cloud to check data quality and cursor
The latest 3D measurement technologies allow the real-time use of a 3D XYZ point cloud to check data quality and cursor
placement accuracy from multiple angles and perspectives. This gives inspectors an unprecedented ability to check their work
placement accuracy from multiple angles and perspectives. This gives inspectors an unprecedented ability to check their work
and avoid costly mistakes.
and avoid costly mistakes.
Accurate VideoProbe measurement requires:
Accurate VideoProbe measurement requires:
•
A well-trained operator
• A well-trained operator
•
• Properly calibrated and maintained equipment
Properly calibrated and maintained equipment
•
• Choosing the correct measurement technology for the application
Choosing the correct measurement technology for the application
•
• Correct measurement tip positioning and measurement setup
Correct measurement tip positioning and measurement setup
•
• Analysis of data quality and cursor-placement accuracy
Analysis of data quality and cursor-placement accuracy
Enabling Technology and
Enabling Technology and
Connectivity
Connectivity
When critical assets depend on accurate measurement, it
When critical assets depend on accurate measurement, it
may be time for a second opinion. For the first time, live video
may be time for a second opinion. For the first time, live video
inspections can now be viewed in real time from a PC, tablet
inspections can now be viewed in real time from a PC, tablet
or smartphone across the room or around the world. The
or smartphone across the room or around the world. The
InspectionWorks Connect remote collaboration tool allows
InspectionWorks Connect remote collaboration tool allows
two-way collaboration and image annotation with field
two-way collaboration and image annotation with field
inspectors in real time using Wi-Fi or Ethernet connectivity.
inspectors in real time using Wi-Fi or Ethernet connectivity.
By putting extra eyes on inspections, you'll benefit from
By putting extra eyes on inspections, you'll benefit from
greater expertise, improved probability of detection, better
greater expertise, improved probability of detection, better
inspection productivity and reduced costs. InspectionWorks
inspection productivity and reduced costs. InspectionWorks
Connect is available as an option on all models of
Connect is available as an option on all models of
Mentor Visual iQ.
Mentor Visual iQ.
VideoProbe 3D Measurement Handbook |
VideoProbe 3D Measurement Handbook
3
08/2019
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