Photonfocus AG 3D Laser Triangulation with CMOS Cameras

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1 Photonfocus AG 3D Laser Triangulation with CMOS Cameras Dr. Peter Mario Schwider, CTO

2 Index CMOS Cameras for Laser Triangulation General product overview Photonfocus AG Laser triangulation with CMOS image sensors and non-linear response curve - LinLog High scan rates with ROI and MROI settings Non-linear response curves and robustness Combined 2D and 3D image processing Tracking of ROI s in frame grabber based solutions Multi camera solutions and line finder in software defined camera platforms Automatic tracking of ROI s Line finder, handling of artefacts and quality measures Summary 2

3 Photonfocus - 15 years CMOS image sensors and CMOS cameras From Standard Cameras to Laser Triangulation Cameras Titelmasterformat OEM Modules durch Klicken Board Level Cameras 2D & 3D Cameras Hyperspectral Cameras Smart Cameras CameraLink Repeater 3

4 CMOS Cameras for Laser Triangulation Motivation for Discrete Laser Triangulation Solutions Different angles due to scattering properties of workpieces Different arrangements due to space limitations Multi sensor setups Non standard line finder techniques Additional data analysis Source LAP Laser 4

5 Benefits of CMOS Image Sensors in Laser Triangulation ROI, MROI and Undersampling as Speed Advantages Examples Titelmasterformat with the durch Photonfocus Klicken CMOS image sensor A1024B x 1024 pixels x 100 pixels x 1024 pixels x 100 pixels x 100 pixels and Undersampling LH = 3 5

6 Benefits of Linlog CMOS Image Sensors Enhancement of the Robustness of the Laser Triangulation with LinLog Response Curve 6

7 Benefits of Linlog CMOS Image Sensors LinLog Response Curves for Laser Triangulation Applications 7

8 Linlog CMOS Image Sensors LinLog in Action 8

9 USP- Linlog Inspection of a Welding Seam with LinLog CMOS Sensor and high Full Well Capacity Standard CMOS camera with linear response curve (<60dB) Photonfocus CMOS camera with LinLog (120dB) 9

10 Benefits of Linlog CMOS Image Sensors Combined 2D/3D Inspection in different Grey Level Regions 10

11 2D/3D Inspection Combined 2D/3D Inspection in different Grey Level Regions Titelmasterformat 2D Inspection of durch a welding Klicken seam: - seam width - small local defects - holes and pores - dropout - Spatter 3D Inspection: Source Precitec - concavity - convexity - Undercut - absent welding seam - big holes Source Precitec 11

12 2D/3D Inspection Example: Detection of Pores Source Precitec Pores with diameters of 800 µm are reliable detected with 3D inspection Small pores with diameters of 200 µm are hardly identifiable with 2D inspection 12

13 2D/3D Inspection with ROI Tracking and Exposure Time Control TrackCam Implementation with 1kHz Frame Rate Source Trumpf Matched system with camera, frame grabber and real time operating system because of high complexity of the system limited use in special applications 13

14 Real Time Analysis of the Line Profiles in the Camera Determination of line position in software defined camera platforms Line Laser image acquisition and analysis in camera CMOS Camera Surface of the workpiece Determination of the line position Different line finder techniques Applications determine line finder techniques 14

15 Modes of Photonfocus 3D Cameras Photonfocus 3D Camera Operating Modes 2D Titelmasterformat only durch Klicken Laser line detection is turned off and the camera behaves as a normal area scan camera. This mode serves as a preview mode in the setup and debugging phase of the vision system. 2D & 3D Laser line detection is turned on. The sensor image (2D image) is transmitted together with the 3D data. In the PF 3D Suite, the detected laser line is shown as a coloured line in the 2D image. This mode serves as a preview mode in the setup and debugging phase of the triangulation system. 3D only Laser line detection is turned on and only 3D data plus an additional image row for line scan applications is transmitted. The scan rate of this mode is considerably faster than the 2D&3D mode. This is the real working mode of the standard cameras. Moving ROI This feature enables at small ROI s high frame rates due to the automatic tracking of the laser line. 15

16 Moving ROI Camera based line tracking Automatic Tracking of Laser Lines in Small ROI s 16

17 3D Line Finder - Inspection in Blind Flight? Artefacts during the image acquisition could often not be avoided! Prevention by: Adoption of the setup suitable line find Introduction of quality measures Automatic blanking of disturbing signals A Priori knowledge Extended analysis in vision system computer with the help of additional image data or CAD data 17

18 Data Transmission in Line Scan Format Data Output Format for Standard Cameras and Customer Solutions Standard Cameras Customer Solutions 18

19 Product Overview Standard 3D Cameras Basis for Versatile Customer Solutions 3D Cameras LinLog Multislope Max. Scan Speed / Hz Moving ROI Dual Line Detector MV1-D1024E-3D MV1-D1312-3D MV1-D1280-L01-3D MV1-D2048x1088-3D MV1-D2048-3D

20 Summary Benefits of CMOS Image Sensors in Laser Triangulation Applications CMOS image sensors enable high speed triangulation with adopted ROIs, MROI und undersampling Non-linear response curves and high full well capacities enhance the robustness of laser triangulation systems Non-linear response curves enable combined 2D/3D inspections Handling of artefacts of the image acquisition can be conducted with the help of quality measures and additional image data or CAD data Expert knowledge of the customers flow in the solution of the application and require if necessary adoptions of the real time line finder in the software defined camera platforms 20

21 Visit us in Hall 1 at Booth A42! Thank you very much for your attention Photonfocus AG Bahnhofplatz 10 CH-8853 Lachen SZ Switzerland Phone: info@photonfocus.com Date: November 2016 Produced by: Dr. Peter Mario Schwider 21