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© Fraunhofer IGD
AUGMENTED CAD FOR QUALITY ASSESSMENT
M.Sc Thu Huong Luu
Fraunhofer IGD / TU Darmstadt
Fraunhoferstraße 5
64283 Darmstadt
Tel.: +49 (0) 6151 155 – 467
E-Mail: thu.huong.luu@igd.fraunhofer.de
www.igd.fraunhofer.de
© Fraunhofer IGD
 Variance analyses with scan data
 Registration of 3D scan to CAD
 Difference measure
VARIANCE ANALYSES
Fraunhofer IGD, Darmstadt
CAD 3D Scan Difference
• Scan to CAD
• CAD to Scan
© Fraunhofer IGD
 PMI extraction
 Part-Level PMI Data
 Assembly-Level PMI Data
 Datum
 Dimension
 Note
PMI EXTRACTION
Fraunhofer IGD, Darmstadt
© Fraunhofer IGD
 3D distance measurement for quality control
APPLICATION EXAMPLE
Fraunhofer IGD, Darmstadt
CAD
CAD
© Fraunhofer IGD
 3D distance measurement for quality control
 PMI extraction + variance analyses
 Measurements based on dimensionality
constraints given in a CAD Model
APPLICATION EXAMPLE
Fraunhofer IGD, Darmstadt
CAD
© Fraunhofer IGD
 3D distance measurement for quality control
 PMI extraction + variance analyses
 Measurements based on dimensionality
constraints given in a CAD Model
 Automatically determine compatible
structures from scan to measure in-between
APPLICATION EXAMPLE
Fraunhofer IGD, Darmstadt
© Fraunhofer IGD
APPLICATION EXAMPLE
Fraunhofer IGD, Darmstadt
Darmstadt, 16.02.2018 – Thu
Huong Luu
Import Annotations &
Geometry (Primitives)
Registration
CAD
Model
Scan
Filter &
Down
Sampling
Segmentation
(Primitives)
MeasurementMapping
Sampling
 3D distance measurement for quality
control
 PMI extraction + variance analyses
 Measurements based on dimensionality
constraints given in a CAD Model
 Automatically determine compatible
structures from scan to measure in-
between
© Fraunhofer IGD
APPLICATION EXAMPLE
Fraunhofer IGD, Darmstadt
 3D distance measurement for quality control
 PMI extraction + variance analyses
 Measurements based on dimensionality
constraints given in a CAD Model
 Automatically determine compatible
structures from scan to measure in-between
 Advantages
 Automatic instead of manual control
 No programming of measurement system
© Fraunhofer IGD
M.Sc Thu Huong Luu
Fraunhofer IGD / TU Darmstadt
Fraunhoferstraße 5
64283 Darmstadt
Tel.: +49 (0) 6151 155 – 467
E-Mail: thu.huong.luu@igd.fraunhofer.de
www.igd.fraunhofer.de

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Augmented CAD for Quality assessment

  • 1. © Fraunhofer IGD AUGMENTED CAD FOR QUALITY ASSESSMENT M.Sc Thu Huong Luu Fraunhofer IGD / TU Darmstadt Fraunhoferstraße 5 64283 Darmstadt Tel.: +49 (0) 6151 155 – 467 E-Mail: thu.huong.luu@igd.fraunhofer.de www.igd.fraunhofer.de
  • 2. © Fraunhofer IGD  Variance analyses with scan data  Registration of 3D scan to CAD  Difference measure VARIANCE ANALYSES Fraunhofer IGD, Darmstadt CAD 3D Scan Difference • Scan to CAD • CAD to Scan
  • 3. © Fraunhofer IGD  PMI extraction  Part-Level PMI Data  Assembly-Level PMI Data  Datum  Dimension  Note PMI EXTRACTION Fraunhofer IGD, Darmstadt
  • 4. © Fraunhofer IGD  3D distance measurement for quality control APPLICATION EXAMPLE Fraunhofer IGD, Darmstadt CAD CAD
  • 5. © Fraunhofer IGD  3D distance measurement for quality control  PMI extraction + variance analyses  Measurements based on dimensionality constraints given in a CAD Model APPLICATION EXAMPLE Fraunhofer IGD, Darmstadt CAD
  • 6. © Fraunhofer IGD  3D distance measurement for quality control  PMI extraction + variance analyses  Measurements based on dimensionality constraints given in a CAD Model  Automatically determine compatible structures from scan to measure in-between APPLICATION EXAMPLE Fraunhofer IGD, Darmstadt
  • 7. © Fraunhofer IGD APPLICATION EXAMPLE Fraunhofer IGD, Darmstadt Darmstadt, 16.02.2018 – Thu Huong Luu Import Annotations & Geometry (Primitives) Registration CAD Model Scan Filter & Down Sampling Segmentation (Primitives) MeasurementMapping Sampling  3D distance measurement for quality control  PMI extraction + variance analyses  Measurements based on dimensionality constraints given in a CAD Model  Automatically determine compatible structures from scan to measure in- between
  • 8. © Fraunhofer IGD APPLICATION EXAMPLE Fraunhofer IGD, Darmstadt  3D distance measurement for quality control  PMI extraction + variance analyses  Measurements based on dimensionality constraints given in a CAD Model  Automatically determine compatible structures from scan to measure in-between  Advantages  Automatic instead of manual control  No programming of measurement system
  • 9. © Fraunhofer IGD M.Sc Thu Huong Luu Fraunhofer IGD / TU Darmstadt Fraunhoferstraße 5 64283 Darmstadt Tel.: +49 (0) 6151 155 – 467 E-Mail: thu.huong.luu@igd.fraunhofer.de www.igd.fraunhofer.de

Editor's Notes

  1. Visualization of the differences between the scan and a sampled CAD model. Original CAD model (left), 3D scan (center) and difference visualization (right)
  2. linked to one or more elements in the model's BREP Datum: Datum annotation information Dimension: measurable feature of the model Note: way to communicate unstructured information in a model (several text elements)
  3. linked to one or more elements in the model's BREP Datum: Datum annotation information Dimension: measurable feature of the model Note: way to communicate unstructured information in a model (several text elements)
  4. linked to one or more elements in the model's BREP Datum: Datum annotation information Dimension: measurable feature of the model Note: way to communicate unstructured information in a model (several text elements)
  5. Vorteile Automatische Vermessung anstatt manueller Vermessung Keine (aufwendige) Programmierung von Vermessungssystemen