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PolyWorks® V10 
Beginner’s Guide
February 2007
3
IMAlign™
3
IMEdit™
3
IMInspect™
3
IMMerge™
3
IMView™
InnovMetric Software Inc.
2014 Cyrille-Duquet, Suite 310
Québec, Québec, Canada, G1N 4N6
Tel.: (418) 688-2061 Fax: (418) 688-3001
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Copyright © 2005-2007 by InnovMetric Software Inc. All rights reserved. Reproduction in 
whole or in part in any way without written permission from InnovMetric Software is strictly 
prohibited.
This manual is furnished for informational use only, and is subject to change without notice. 
InnovMetric Software Inc. assumes no responsibility or liability for any errors or inaccura-
cies that may appear in this document.
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Contents
PolyWorks V10 Beginner’s Guide
3
Contents
Introduction............................................................................................... 7
Your Beginner’s Guide......................................................................................... 7
For more information............................................................................................ 7
Before you start.................................................................................................... 7
Getting the data files............................................................................................ 8
Typical PolyWorks Workflow.............................................................................. 10
PolyWorks Basics................................................................................... 11
1. The PolyWorks/Workspace Manager............................................................. 11
1.1 The Workspace Manager interface................................................... 12
1.2 The Wizard window........................................................................... 13
1.3 Workspace contents.......................................................................... 14
1.4 Sharing a PolyWorks workspace....................................................... 14
2. Interface Basics.............................................................................................. 15
2.1 Getting ready..................................................................................... 15
2.2 Visiting a module interface................................................................ 15
2.3 Working in the 3D scene................................................................... 19
2.4 Working with objects......................................................................... 21
2.5 Objects and their elements................................................................ 22
2.6 Additional information........................................................................ 24
2.7 End the exercise................................................................................ 24
2.8 Close the active PolyWorks workspace............................................ 24
2.9 Exit the Workspace Manager............................................................ 24
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Contents
PolyWorks V10 Beginner’s Guide
4
AcquiringData........................................................................................ 25
A. Scan the part ......................................................................................26
B. Align the scans ..................................................................................27
IMAlign basics......................................................................................... 27
Exercise #1: A typical alignment project.................................................. 28
1. Get ready.................................................................................. 29
2. Import and align 3D Images one at a time................................ 30
3. Optimize the global 3D Image alignment.................................. 34
4. Analyze the quality of the alignment......................................... 35
5. Save and exit............................................................................ 37
Exercise #2: Auto-align 3D Images......................................................... 38
1. Get ready.................................................................................. 38
2. Import and automatically align 3D Images one at a time.......... 38
Reverse Engineering.............................................................................. 41
A. Generate a polygonal model .............................................................43
IMMerge basics....................................................................................... 43
Exercise #1: Generate a polygonal model.............................................. 44
1. Start IMMerge........................................................................... 44
2. Set parameters......................................................................... 44
3. Start the merging process........................................................ 44
4. Exit IMMerge............................................................................ 44
Additional information.............................................................................. 45
B. Improve the polygonal model ...........................................................46
IMEdit basics........................................................................................... 46
Exercise #1: A typical editing project....................................................... 48
1. Get ready.................................................................................. 49
2. Import the polygonal model...................................................... 49
3. Edit the model........................................................................... 50
3.1 Fill holes....................................................................... 50
3.2 Smooth vertices........................................................... 54
3.3 Extract sharp edges..................................................... 55
4. Optimize the polygonal mesh................................................... 56
4.1 Optimize the mesh....................................................... 56
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Contents
PolyWorks V10 Beginner’s Guide
5
4.2 Reduce the mesh......................................................... 57
5. Extract the shape of the model................................................. 58
6. Export the edited polygonal model........................................... 59
7. Save the IMEdit editing project................................................. 59
C. Create NURBS surfaces ....................................................................60
Exercise #1: Create NURBS surfaces - manual method......................... 61
1. Get ready.................................................................................. 62
2. Extract feature curves............................................................... 62
3. Complete the curve set............................................................. 66
4. Create the curve network......................................................... 70
5. Fit NURBS surfaces on the model using the curve network..... 70
6. Export the fitted NURBS surfaces............................................ 71
7. Save the IMEdit editing project and exit................................... 71
Exercise #2: Create NURBS surfaces - automatic method..................... 72
1. Get ready.................................................................................. 72
2. Extract feature curves............................................................... 72
3. Perform the auto-nurbing.......................................................... 73
4. Save the IMEdit editing project and exit................................... 74
Inspection................................................................................................ 75
A. Inspect the digitized part ...................................................................77
IMInspect basics...................................................................................... 77
Exercise #1: A typical inspection project................................................. 79
1. Get ready.................................................................................. 80
2. Define the Reference object..................................................... 81
2.1 Import the Reference object........................................ 81
2.2 Create Features on the Reference object.................... 82
3. Acquire the Data object............................................................ 83
4. Align the Data object to the Reference object.......................... 83
4.1 Pre-align using a best-fit alignment............................. 83
4.2 Auto-extract measured Primitives on the Data object.. 84
4.3 Align using Features.................................................... 84
5. Measure ................................................................................... 85
5.1 Compare using all data points..................................... 85
5.2 Compare using Cross-Sections................................... 86
5.3 Take basic measurements........................................... 89
6. Report results........................................................................... 90
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Contents
PolyWorks V10 Beginner’s Guide
6
7. Save the inspection project and exit......................................... 90
Exercise #2: Control Feature Dimensions and GD&T............................. 91
1. Get ready.................................................................................. 91
2. Create the Features.................................................................. 92
3. Control dimensions................................................................... 93
4. Perform GD&T controls............................................................ 94
5. Save and exit............................................................................ 95
Exercise #3: Using an automated inspection project.............................. 96
1. Get ready.................................................................................. 96
2. Perform the automatic operations............................................ 97
B. Share the results ................................................................................98
IMView basics......................................................................................... 99
Exercise #1: View an inspection project................................................ 100
1. View the categories of objects and their comparison results.. 100
2. Take new measurements....................................................... 100
3. Create new report items......................................................... 101
4. Create a new formatted report................................................ 101
5. Export objects......................................................................... 104
6. Exit IMView............................................................................. 104
AdditionalInformation.......................................................................... 105
1. IMAlign – More information and other tools................................................. 105
2. IMEdit – Other tools..................................................................................... 107
3. IMEdit – IMCompress parameters............................................................... 111
4. IMInspect – Macro script basics................................................................... 112
5. IMInspect – Other tools................................................................................ 115
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Introduction
PolyWorks V10 Beginner’s Guide
7
Introduction
InnovMetric Software Inc. welcomes you to PolyWorks®, the leading software in the world for re-
verse-engineering and inspection applications using high-density point clouds.
Your Beginner’s Guide...
The PolyWorks V10 Beginner’s Guide will walk you through a typical reverse-engineering process 
and a typical inspection process using PolyWorks V10. You will learn basic notions and do exer-
cises that result in a reverse-engineering and an inspection application. This guide:
• Is goal oriented - we provide you with the procedures, parameter values, and data files and you 
do the work.
• Uses workflow charts and a step-by-step approach; the workflow charts can be used as a gen-
eral summary of all the steps needed to accomplish a basic inspection or reverse-engineering 
project in PolyWorks.
• References other PolyWorks tools not seen in this guide to round up your learning experience.
In order to use this guide and do the exercises, the PolyWorks software must be installed and the 
license keys obtained that activate the software.
For more information...
You will learn quickly, and want to know more about certain tools or parameters, or have questions 
about tools not demonstrated in this guide. You can continue your learning by referring to the Poly-
Works reference guides, by accessing the tutorials and the case studies available on our web site, 
by contacting your technical support service, or by following a training tailored to your needs.
Before you start...
You will benefit from:
• Instructions for getting the data files required for the exercises on page8.
• A global PolyWorks workflow presentation on page10.
Introduction
PolyWorks V10 Beginner’s Guide
8
Getting the data files
The goal of this Beginner's Guide is to learn through practical exercises, using prepared data 
files (scans, polygonal models, etc.). The data files are available on CD or online. The 
procedures that follow explain how to copy these files to your computer’s local disk. On the next 
page, you will find a brief description of the files provided.
1 - On the PolyWorks Installation CD-ROM
• Insert the PolyWorks V10 installation CD-ROM in your CD drive.
• Cancel the installation that is launched automatically.
• Open Windows Explorer or My Computer.
• Click on the CD drive.
• Copy the PolyWorks V10 Beginner's Guide Data directory to your computer’s local disk.
• Right-click on the copied directory and choose Properties. A dialog box pops up.
• Uncheck the Read-only attribute and click OK. A dialog box pops up.
• Check Apply changes to this folder, subfolders and files, and click OK.
2 - On the Technical Support Zone of our web site:
• Start your web browser.
• Browse for http://www.innovmetric.com.
• If the web site language is not English, click on the English 
link at the top of the web page.
• Find the TECHNICAL SUPPORT ZONE title on the page (see 
figure to the right).
• Enter your login and password, and click Enter. If you don’t 
have your own login, you can use the public one:
• Login: polyworks
• Password: accurate
• Click 
.
• In the Data Exchange section, under Public, click PolyWorks 
V10 Beginner’s Guide Data to download to your computer’s local disk.
• Unzip the PolyWorks V10 Beginner’s Guide Data.zip file.
• Select the directory PolyWorks V10 Beginner's Guide Data.
• Right-click and choose Properties. A dialog box pops up.
• If the Read-only attribute is set, unset it and click OK. A dialog box pops up.
• Check Apply changes to this folder, subfolders and files and click OK.
See the next page for the PolyWorks V10 Beginner's Guide Data directory structure and the 
names of the data files. In the exercises that will follow, only the file names will be provided.
Introduction
PolyWorks V10 Beginner’s Guide
9
The PolyWorks V10 Beginner's Guide Data directory structure and data files:
PolyWorks V10 Beginner's Guide Data
PolyWorks Workspaces
PolyWorks_interfaces.pwk.pwzip
PolyWorks_processes.pwk.pwzip
Reference Object
IMBlock_CAD.igs
Scans of IMBase
IMBase_1.pf
IMBase_2.pf
IMBase_3.pf
IMBase_4.pf
IMBase_5.pf
IMBase_6.pf
IMBase_7.pf
IMBase_8.pf
Scans for Auto-align
Sheetmetal_001.pf
Sheetmetal_002.pf
Sheetmetal_003.pf
Sheetmetal_004.pf
Sheetmetal_005.pf
Sheetmetal_006.pf
Raw scan files of a base. For the 
alignment exercise.
The theoretical CAD model for the 
inspection exercise.
Two PolyWorks workspaces, containing 
files required for exercises, in a 
compressed format (.pwzip). They will 
be decompressed when you open them 
in the PolyWorks/Workspace Manager.
Raw scan files of a sheet metal part 
for the auto-alignment exercise.
Introduction
PolyWorks V10 Beginner’s Guide
10
Typical PolyWorks Workflow
PolyWorks is the leading reverse-engineering and inspection software solution on the market to-
day. The PolyWorks process consists of three sub-processes, as shown in the workflow below:
• Acquiring Data - You either have point clouds or can scan a part using your digitizer and 
PolyWorks plug-ins. Then, align the point clouds accurately, or if your point clouds are 
already aligned, verify the alignment quality prior to reverse engineering or inspection.
• Reverse Engineering - Generate a high-quality polygonal model from the aligned point 
clouds, then improve the polygonal model to meet your downstream application 
requirements, and even create high-quality NURBS surfaces.
• Inspection - Compare the aligned point clouds to a reference object using user-defined 
tolerances. Take accurate measurements. Create customized reports. Then, send the 
results to your partners for viewing with the free PolyWorks inspection project viewer.
This guide is built around this simple workflow. While the next section quickly presents the Poly-
Works/Workspace Manager and PolyWorks interface basics, the three most important sections in-
troduce the processes described above.
AcquiringData
A. Scan the part
B. Align the scans
PolyWorks V10
Reverse Engineering
A. Generate a polygonal model
B. Improve the polygonal model
C. Create NURBS surfaces
Inspection
A. Inspect the digitized part
B. Share/view the inspection 
project
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