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PolyWorks/Modeler™ V8.0 Beginner’s Guide August 2003 IMAlign™ IMMerge™ IMEdit™ IMCompress™ IMView™ IMTexture™ (option) InnovMetric Software Inc. 2014 Jean-Talon Nord, Suite 310 Ste-Foy, Québec, Canada, G1N 4N6 Tel.: (418) 688-2061 Fax: (418) 688-3001 Copyright © 2003 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 responsability or liability for any errors or inaccuracies that may appear in this book. ii

Contents Welcome... ............................................................................... 5 Getting the data files.................................................................. 6 The POLYWORKS/MODELER SUITE ............................................... 8 PolyWorks Basics ....................................................................... 9 1 – Starting PolyWorks’ modules ......................................... 9 2 – Interface basics ........................................................... 9 3 – Visualization in IMAlign, IMEdit, and IMView ................... 10 4 – Positioning scans/polygonal models using the mouse ....... 10 Polyworks/Modeler V8 Overview (Schema) ................................... 13 Step #1 - IMAlign............................................................ 15 IMAlign basics ....................................................................... 16 1 - The Block Project - Getting ready........................................... 18 2 - Aligning the scans manually .................................................. 20 2.1 Load the scans ........................................................... 20 2.2 Hide bad/irrelevant data points from IMAlign processes.... 21 2.3 Lock one image and ignore the rest ............................... 22 2.4 Manually align 3D images one at a time ......................... 22 3 - Optimize the global image alignment ...................................... 26 4 - Analyze the alignment results................................................ 27 5 - Remove redundant points (optional)....................................... 28 6 - Save the IMAlign group ........................................................ 28 7 - Exit IMAlign ........................................................................ 28 Comments ............................................................................... 29 Step #2 - IMMerge ......................................................... 31 IMMerge basics ........................................................................ 31 1 - The Block Project ................................................................. 35 1.1 Calculating parameter values........................................ 35

/ iv 1.2 Creating the polygonal mesh from an IMAlign group ........ 35 Comments ............................................................................... 37 Step #3 - IMEdit ............................................................. 39 IMEdit basics............................................................................ 39 Triangle & vertex selection ......................................................... 41 1 - The Block Project - Getting started......................................... 45 2 - Fill holes............................................................................. 47 2.1 Clean the holes........................................................... 48 2.2 Fill holes automatically................................................. 48 2.3 Fill complex holes using a composite Bézier surface ......... 49 3 - Optimize the mesh............................................................... 52 3.1 The Optimize Mesh window .......................................... 52 3.2 Optimizing the mesh ................................................... 53 4 - Extract edge and tangent curves............................................ 57 5 - Reconstruct a corner ............................................................ 59 6 - Reduce the edited mesh ....................................................... 61 6.1 The IMCompress window.............................................. 61 6.2 Reducing a selected group of triangles ........................... 61 7 - Generate Cross-Sections....................................................... 63 8 - Subdivide the mesh ............................................................. 65 9 - Export the edited polygonal model ......................................... 66 10 - Save the IMEdit editing project ............................................ 66 11 - Get ready to start a new project........................................... 66 12 - Create fitted NURBS surfaces............................................... 67 12.1 Create the boundary curves........................................ 68 12.2 Create curves from pairs of user-picked points .............. 70 12.3 Create additional curves by picking on the model........... 71 12.4 Create the curve network from a set of curves .............. 72 12.5 Create NURBS surfaces fitted on a curve network .......... 73 12.6 Evaluate the resulting NURBS surfaces ......................... 74 13 - Export the fitted NURBS surfaces ......................................... 74 14 - Save the IMEdit editing project ............................................ 74 15 - Exit IMEdit ........................................................................ 74 Comments ............................................................................... 75 Glossary .................................................................................. 75

PolyWorks Modeler Suite Version 8.0 Overview / 5 Welcome... To this PolyWorks/Modeler V8.0 Beginner’s Guide. It will pro- vide you with a hands-on experience that: Is goal oriented - we give you the scans and polygonal models and you do the work. Uses a step-by-step approach. Has fast forward possibilities - intermediate files are supplied at all major points. Adds expert comments to round up your learning experience. Provides video segments that show you the execution of the steps that you will do man- ually. These video segments are available through the PDF version of this Beginner’s Guide, which can be accessed under the Help item on the main menu of the IMAlign and the IMEdit modules. Before you start... You will benefit from: Our product presentation - page 8. An introduction to working with PolyWorks - page 9. A visual PolyWorks/Modeler process overview - page 13. At a glance... The exercises included in this Beginner’s Guide present the fol- lowing tools: IMAlign overview - pages 15 - 30. IMMerge overview - pages 31-38. IMEdit overview - pages 39-76.

Getting the data files... PolyWorks Modeler Suite Version 8.0 Overview / 6 The goal of this Beginner's Guide is to learn through practical exercises, using prepared data files (scans, polygonal models, etc.). The data files can be found in two distinct places. 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 (35 MB) Insert the PolyWorks V8 installation CD-ROM on your CD drive. Cancel the installation launched automatically. Open Windows Explorer or My Computer. Click on the CD drive. Click on the Beginner's Guides directory, and then on Beginner's Guides Data. Copy the Beginner's Guides Data directory on your computer’s local disk. Click on the copied directory. Choose in the main menu File > Properties. Uncheck the Read-only attributes and click OK. In the popup menu, check Apply changes to this folder, subfolders and files, and click OK. 2 - On our Web Technical Support Zone (13.5 MB) Open Windows Explorer or My Computer. Start Internet Explorer. Browse for http://www.innovmetric.com Click on Technical Support Zone. You are asked to enter your login and password. If you don't have your own login, you can use the public one. Login: polyworks Password: accurate On the Data Exchange section under Public Demo Data, click the Beginner's Guide Data.zip download button. Save the select Beginner's Guide Data.zip to your computer’s local disk. Unzip the Beginner's Guide Data.zip file. Click on the unzipped directory Beginner's Guides Data. Then, choose in the main menu File > Properties. Uncheck the Read-only attributes and click OK. In the popup menu, click OK. See the next page for the Beginner's Guides Data directory structure and the names of the data files. In the exercises that will follow, only the file names will be provided.

The Beginner's Guides Data directory structure and the data files: PolyWorks Modeler Suite Version 8.0 Overview / 7 Beginner's Guides Data IMAlign_Input_Data Raw scan files to be aligned in IMAlign block01.pf block02.pf block03.pf block04.pf block05.pf block06.pf block07.pf block08.pf block09.pf block10.pf block11.pf block12.pf block13.pf block14.pf IMEdit_Models block.pqk Model_for_NURBS.pqk Polygonal models to be edited in IMEdit IMInspect_Data_Files block-data.pqk VentureBlock.iges Files for building a typical inspection project in IMInspect

PolyWorks Modeler Suite Version 8.0 Overview / 8 The POLYWORKS/MODELER SUITE InnovMetric, the leader in polygonal modeling since 1994, is proud to present its Modeler suite V8.0 based on user-specified controls to meet your needs. Scan #1 ... Scan #14 IMAlign 14 aligned scans Polygonal mesh IMMerge Edited model 140,700 triangles IMEdit Reduced model 15,000 triangles IMCompress Use IMAlign to bring into one coordinate sys- tem hundreds of scans, totalling tens of mil- lions of points. All scan data is accepted. No targets required either - IMAlign’s technology uses the object’s own features to accurately and precisely align (register) the scans. Then, use IMMerge to create from the aligned scans one global mesh that is adapted to the object curvature. You can control triangle size, smooth the input data to remove digitizer noise, increasing the accuracy of your scanner data, and significantly reduce the model size while rigorously respecting model resolution! Give added value to your polygonal model with IMEdit. Fill holes, reconstruct edges, smooth surfaces, extrude boundaries, create male/female pieces with automatic dowels, and fit high-quality NURBS surfaces – get ready to manufacture, simulate, or visualize! Now it’s time to reduce the model to make it fit your software and production needs. IMCompress can produce multiple decimated polygonal models quickly, while conserving the object’s features. Which decimated model is the best? Compare them in IMView, InnovMetric’s free viewer, and decide. What you see IS what you get! You need to decimate a color polygonal model and it is important to conserve a high quality appearance. Use the optional IMTexture model that teams up with IMCompress to pro- duce a variety of high resolution texture maps and a final, colorless polygonal model.

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