Freestyle 3D. Features and applications. Dr. Daniel Döring Team Lead Product Development Freestyle 1

Transcription

1 Freestyle 3D Features and applications Dr. Daniel Döring Team Lead Product Development Freestyle 1

2 3D scanning Building works: How to record data? How to check what has been built? How to fit in new parts? 2

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4 Applications Outlook What is Freestyle 3D? Functionality Overview 4

5 Freestyle 3D products Handheld 3D scanner to document rooms, structures and objects in 3D Spec Value Range 0.5m-3m (Freestyle/Freestyle X) 0.3m-0.8m (Freestyle Objects) Accuracy Noise 1.5mm (Freestyle) 1.0mm (Freestyle X) 0.5mm (Freestyle Objects) 1m distance (Freestyle/Freestyle X) 0.5m distance (Freestyle Objects) 5

6 Freestyle 3D products Handheld 3D scanner to document rooms, structures and objects in 3D Feature Freestyle X Freestyle Objects Range 0.5m-3m 0.3m-0.8m Resolution 0.2mm-1mm 3D point accuracy <1.0mm <0.5mm Maximum points per frame Maximum frame rate 8Hz RMS noise <1mm in 1m distance <0.4mm in 0.5m distance Field of view Exposure time Laser Weight IP rating Scanning environment 45 x59 in 1m distance 0.02ms-10ms 810nm, class 1, 800mW 0.98kg IP52 Mainly indoor (outdoor only in shady/cloudy conditions), variable lighting 6

7 Features Easy to use: Plug-and-play with tablet 7

8 Features Superior resolution: limited by spot size of laser 8

9 Features Superior resolution: limited by spot size of laser 9

10 Features On-site calibration Calibration plate to guarantee accuracy and realistic colours Calibrated marker positions on plate allow for calibration of external camera parameters. White balancing on white regions of calibration plate 10

11 Features Calibration board On-site color and device calibration Optionally traceable to NIST Length reference and verification of scan quality Support for tracking (also with single coded markers) 11

12 Applications 12

13 Applications BIM/CIM Piping Stairs (and lifts) Kitchen installations... 13

14 Applications Public Safety Car accidents Crime scenes 14

15 Applications Product Design Reverse Engineering 3D print 15

16 Applications Combine with laser scans Single Focus scan Freestyle scan 16

17 Applications Combine with laser scans Nice combination of Freestyle and Focus scans 17

18 Functionality 18

19 How does it work? 3D data as output from a handheld device. Two steps: 1. Single frame 3D data 2. Combination of multiple frames Calibrated system with: Two IR cameras One color camera One laser 19

20 Single frame 3D Project laser on surface Detect laser pattern in IR cameras (reflectivity depending on surface) Calculate 3D points 20

21 Single frame 3D Stereoscopic imaging system, 3D points by triangulation 21

22 Single frame 3D Stereoscopic imaging system, 3D points by triangulation Camera A Camera B 22

23 Light source & pattern Pattern of 11k points, each point about 1mm in diameter Points detected with subpixel accuracy in camera images Ridge waveguide laser, 800mW total peak power No coding in pattern. Superior resolution compared to sensors like Kinect/PrimeSense 23

24 Limitations Measurement geometry: short baseline (or large distance from device) reduces precision Long baseline Short baseline Difficult situations for 3D capture: Sunlight Polished/clear surfaces Absorbing material 24

25 Combine multiple frames Single 3D frames available. How to combine them? Frame-to-frame registration Tracking of natural targets in colour video 3D information added for tracking if available Possibility to use coded markers for tracking and registration 25

26 Combine multiple frames What are the limitations? Insufficient features (e.g. scanning white walls) Bad lighting conditions (too dark) Moving objects in image 26

27 Combine multiple frames Room cross section 27

28 Software SCENE Capture on tablet PC: simple user interface with basic functionality. Calibrate Scan Check data Processing 28

29 Software SCENE Capture 29

30 Software SCENE Process on workstation Processing Registration Meshing Export 30

31 Outlook 31

32 Freestyle R&D Team Please come and talk to us! 32

33 Thanks for your attention! 33

34 Example scans 34

35 Example scans 35

36 Example scans 36

37 Example scans 37