3D SCANNING TECHNOLOGIES IN MECHANICAL ENGINEERING AND MANUFACTURE Gábor Kimmel Computer engineering 3D Graphics Professional Days

3D scanning is a process where a real-world object or enviroment is captured into a computer-based 3D model. Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

AVAILABLE TECHNOLOGIES CONTACTNON-CONTACT ACTIVE(Ultrasound) Industrial CT LiDar Structured light (Ultrasoung) PASSIVETouch probeStereo cameras Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

CLASSIC SOLUTIONS Slow Hard to scale Expensive Proven Accurate Simple Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture Touch probe Industrial CT Rare due to high cost Used mostly in various material tests

OPTICS-BASED TOOLS Not as accurate Numerous problems to be solved Fast Highly scalable Cheap Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture Measure with lasers or other light sources Used in geoinformatics since the 1970s LiDar, Structured light, Stereo camera systems

OPTICS-BASED TOOLS Fast Highly scalable Cheap Multitude of samples  better results Active research & development Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

LIGHT RADAR (LIDAR) Measures using a laser and a sensor In focus of research since the 2000s Decent accuracy Room for improvement Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

STRUCTURED LIGHT Structured = well-known Pattern projected on measured object Pattern deforms Comparison of original and deformed pattern Cheap to install Accuarcy has much to be desired Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

STRUCTURED LIGHT Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

COMPARISON Touch probeLiDar Measurement speed1x1,3-10x Resolution 100 nm – 10  m22–80  m Measurement uncertainty 0,3  m – 1,2  m1.9–12  m Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

RESEARCH 3D printed objects from CAD model Creating „machine parts” Measuring manufacture errors Suboptimal G-code Material deform Using proper parameters for CAD files Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

RESEARCH Measurement speed Accuracy Measurement uncertainty Resolution Computer resources 2 tools: MS Kinect & DAVID3D-based tool Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

MS KINECT Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture IR Emitter CMOS camera IR camera

DAVID3D-BASED CONSTRUCTION Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

DAVID3D-BASED CONSTRUCTION Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture NXT controller Laser module Camera

DAVID3D-BASED CONSTRUCTION Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

RESULTS Kinect Not designed for this task Resolution too small Accurate measurement is not possible DAVID3D Weak laser  prone to errors due to ambient light Surface of measured object affects accuracy greatly Acceptable results (  2 mm) Decent measurement uncertainty Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

RESULTS Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

RESULTS Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture KinectDAVID3D Measurement speedAvg. 2 minutesAvg. 12 minutes Resolution -Dependent on camera (166,33 points/mm 640x480) Measurement uncertainty -2mm

SYSTEM RESOURCES Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

SUMMARY Primary reserach Unaccurate, but quick scanning Processing of data needs a lot of human input Device suitable for artistic purposes only Quick and easy to build Secondary research Touch probes still more accurate Difference between accuracy is becoming less noticable When will the time come: just as accurate and much faster Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture

Thank you for your attention! Gábor Kimmel | 3D Scanning Technologies in Mechanical Eengineering and Manufacture