Photonfocus AG 3D solutions- Cameras and Software
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1 Photonfocus AG 3D solutions- Cameras and Software Marcel Krist, CEO
2 Company Overview Origin, Location and Organization Origin: Photonfocus was founded in 2001 as spin-off from the CSEM Institute in Neuchâtel, Switzerland. CSEM is specialized in micro- and nanotechnology, system engineering microelectronics and communications technologies. Location: The PF office is based in Lachen, Canton of Schwyz, Switzerland Within 50 km radius several major institutes for microelectronics and Embedded Systems, as well as five main suppliers and key customers are located. Organization: Board of Directors: Marcel Krist (Chairman), Daniel Wälchli (IHAG Holding) & Robert Grüter. Executive Board: Marcel Krist (CEO) and Peter Schwider (CTO) & René Hauser (COO). 6 different divisions: Hardware Design, Firmware Design, Software Design, Production & Quality Management, Sales & Marketing, and Human Resources & Accounting. 2
3 Index Photonfocus 3D solutions General product idea LinLog Peak Detector Photonfocus 3D Modes Moving ROI Summary Products 3
4 General product idea Situation today Many OEM customers are already using Photonfocus cameras for 3D laser triangulation applications due to the LinLog advantage Customers need to implement COG algorithms on frame grabber Implementation times are high taking away valuable time for customers to focus on core business 4
5 General product idea Customers wish Many customers have asked for a Photonfocus camera where the COG algorithm is implemented in the camera This would significantly reduce implementation time and increase overall time to market. 5
6 General product idea Photonfocus solution Photonfocus has started a joint project with Aqsense, a company specialising in 3D developments. Aqsense has developed the Peak detector, a new algorithm that is much better than COG The combination of LinLog and the Peak detector offers significant advantages than current solutions available in the 3D market 6
7 Index Photonfocus 3D solutions General product idea LinLog Peak Detector Photonfocus 3D Modes Moving ROI Summary Products 7
8 USP- Linlog What is LinLog? Pixel technology patented by Photonfocus Linear logarithmic characteristic curve of Photonfocus CMOS sensors High dynamic range of up to 120dB vs. 60dB of linear sensors All details become visible in the dark & bright part of a high contrast picture at the same time. 8
9 USP- Linlog How does LinLog work? Patented pixel design Combining advantage of linear response curve for the dark part and logarithmic compression for the bright part. LinLog response curve can be adapted by software to the current prevailing picture. 9
10 USP- Linlog LinLog in action LinLog off LinLog on 10
11 The picture can't be displayed. USP- Linlog Inspection of different materials with LinLog Reflective (oil film) laser welded blanks inspected in logarithmic range, whereas the carbonised joint is strongly light absorbing and needs to be inspected in linear region. LinLog delivers good images even for different material characteristics. Standard camera with linear response (<60dB) Photonfocus CMOS camera with LinLog response (120dB) 11
12 USP- Linlog Combined 2D/3D inspection with LinLog Simultaneous surface (2D grey scale) and height (3D Laser triangulation) inspection possible. Key surface inspected in linear region. Laser line for triangulation is captured in logarithmic range. Standard camera with linear response (<60dB) Photonfocus CMOS camera with LinLog response (120dB) 12
13 USP- Linlog Combined 2D/3D inspection of seam welded joints with LinLog 2D characteristics of a seam welded joint to be inspected: - Seam width - Local defects - Holes - Pores - Dropouts - Spatter 3D characteristics of a seam welded joint to be inspected: - Concavity - Convexity - Undercut - Missing seam - Focal position 13
14 USP- Linlog Combined 2D/3D inspection of seam welded joints with LinLog Pore diameters of 800 µm can be detected with laser triangulation (3D) since laser line is interrupted Titelmasterformat durch Klicken Small pore diameters of around 200 µm can only be detected with grey image analysis (2D), due to edge scattering effects on the laser line Pore diameters of 800µm can easily be detected with 3D image analysis Small pore diameters of 200µm only detectable with 2D image analysis 14
15 Index Photonfocus 3D solutions General product idea LinLog Peak Detector Photonfocus 3D Modes Moving ROI Summary Products 15
16 Peak Detector Characteristics of surfaces Characteristics of specular surfaces The camera can't see any light, because all incident light rays on the surface are reflected according to Snell's law. Laser triangulation does not work with specular surfaces. Cone of light as viewed by the camera FOV Specular surface (Mirror, ) 16
17 Peak Detector Characteristics of surfaces Characteristics of lambertian surfaces Pure lambertian surfaces reflect light in any direction. The incident light rays seen by the camera is much higher than with other surface types. Lamb. surface (Opaque plastic, ) 17
18 Peak Detector Characteristics of surfaces Characteristics of lambertian-specular surfaces Some materials are a combination of a lambertian and specular surface The camera sees only a small fraction of the incident light rays Arrow lengths indicate the power of the reflected light rays in every direction. Lamb. Spec. surface (Metal, ) 18
19 Peak Detector Characteristics of surfaces Characteristics of translucid-lambertian surfaces Translucid-Lambertian surfaces allow the propagation of light through them, part of this light is seen by the camera, meaning that false detections can be obtained. These light rays are also visible by the camera!!! Translucid-Lambertian surface 19
20 Peak Detector Laser stripe on different surfaces Laser stripe on lambertian surfaces Materials: Plastics (PVC & similar) Clean non specular metal Walls Ceramics The maximum intensity is in the middle of the stripe image. Lambertian Surface Intensity profile of the stripe image 20
21 Peak Detector Laser stripe on different surfaces Laser stripe on translucid-lambertian surfaces Materials: Plastic (Nylon & similar) Animal tissue Silicon Resins Marble and Minerals Metal with oil film Some timber The maximum intensity is NOT in the middle of the stripe image. Translucid-lambertian surface Intensity profile of the stripe image 21
22 Peak Detector vs. COG What kind of accuracy can be achieved with the COG method? COG = Centre of gravity Grey values of pixels above threshold Calculate weighted COG out of grey values of every pixel COG = Le + (P i x i )/ (P i ) Left Edge Sum of gray values above threshold P i First moment of gray values above threshold Threshold Le Real resolutions around 1 / 10 th of a pixel 22
23 Peak Detector vs. COG What accuracy can be achieved with the Peak detector? Digital filtering of noise Non linear interpolation Maximum intensity value detector Resolutions of up to 1/64th of a pixel!!! 23
24 Peak Detector vs. COG Comparison of COG and Peak detector without noise Lambertian surface COG & Peak Translucid-Lambertian surface COG Peak 24
25 The picture can't be displayed. The picture can't be displayed. The picture can't be displayed. Peak Detector vs. COG Comparison of COG and Peak detector in the presence of noise Lambertian surface Peak COG Translucid-Lambertian surface COG Peak 25
26 The picture can't be displayed. Peak Detector - Changing light conditions Comparison of Peak Detector vs. COG depending on threshold Threshold = 30 Original Image X COG Detection O Peak Detection Laser stripe Detection Thresholded Image Strip detection overlay 26
27 The picture can't be displayed. The picture can't be displayed. The picture can't be displayed. Peak Detector - Changing light conditions Comparison of Peak Detector vs. COG depending on threshold Threshold = 50 Original Image X COG Detection O Peak Detection Laser stripe Detection Thresholded Image Strip detection overlay 27
28 The picture can't be displayed. The picture can't be displayed. The picture can't be displayed. Peak Detector - Changing light conditions Comparison of Peak Detector vs. COG depending on threshold Threshold = 120 Original Image X COG Detection O Peak Detection The Peak Detector is extremely robust, even under changing light conditions, compared to COG Laser stripe Detection Thresholded Image Strip detection overlay 28
29 The picture can't be displayed. The picture can't be displayed. Peak Detector Surfaces of 3D objects COG delivers 3D scans with rough surfaces Cut 29
30 The picture can't be displayed. Peak Detector Surfaces of 3D objects Peak Detector delivers accurate 3D scans with smooth surfaces Cut 30
31 Index Photonfocus 3D solutions General product idea LinLog Peak Detector Photonfocus 3D Modes Moving ROI Summary Products 31
32 Photonfocus 3D modes Photonfocus 3D modes The camera has three modes that determine which data is transmitted to the user: 2Donly Laser detection is turned off and camera behaves as a normal area scan camera. This mode serves as a preview mode in the setup and debugging phase. 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. 3Donly Laser line detection is turned on and only 3D data plus an additional image row is transmitted. The scan rate of this mode is considerably faster than the 2D&3D mode. The 3Donly mode must be used to achieve the highest scan rate. 32
33 Photonfocus 3D modes ROI definition in 3D mode 33
34 Photonfocus 3D modes Transmited image in 2D & 3D mode 34
35 Index Photonfocus 3D solutions General product idea LinLog Peak Detector Photonfocus 3D Modes Moving ROI Summary Products 35
36 Moving ROI Moving ROI Overview The Titelmasterformat Moving ROI feature durch automatically Klicken centers the ROI vertically based on the detected 3D coordinates.this allows to set a smaller region of interest (ROI) and therefore achieve a bigger frame rate. The Moving ROI feature is specially suitable for scanning of flast surfaces. The Moving ROI feature is available in 2D&3D mode and in 3DOnly mode The Moving ROI feature is available with one peak (peak 0) only. 36
37 Moving ROI Moving ROI Principle and Laser Finder Working principle: Laser finder: 37
38 Index Photonfocus 3D solutions General product idea LinLog Peak Detector Photonfocus 3D Modes Moving ROI Summary Products 38
39 Summary Advantages of Photonfocus 3D solution LinLog Titelmasterformat Avoids images with durch saturated Klicken laser stripes Allows combined 2D/3D inspections at the same time Good laser line images, even for different surfaces Peak Detector Higher accuracy than commonly used COG algorithms Impartial to different surfaces and light conditions Standard camera with linear response (60dB) & COG Photonfocus 3D camera with LinLog response (120dB) & Peak Detector 39
40 Summary Measurements under Real Conditions Measurements under real conditions have shown that with the new 3D camera it s possible to measure down to 5µm Calibrated gage blocks from Metrology & Quality Service Ltd 40
41 Index Photonfocus 3D solutions General product idea LinLog Peak Detector Photonfocus 3D Modes Moving ROI Summary Products 41
42 Products - Overview Photonfocus offers more than only 3D camera solutions OEM-Modules Board Level Cameras CMOS Cameras as well as additional services to speed up our customers time to market. - FPGA Firmware - Schematics - Layout services - Customer specific OEM Boards 42
43 Products - Overview 3D cameras Camera Specifications MV-D1024E-160-3D01-CL LinLog Peak detector Moving ROI Dual Peak detector MV1-D1024E-3D G2 MV1-D1312-3D G2-8 MV1-D2048x1088-3D G2 MV1-D2048x1088-3D G2-S10 MV1-D2048-3D G2 43
44 Products - Overview 3D cameras Image Sensor Specifications MV-D1024E-160-3D01-CL MV1-D1024E-3D G2 MV1-D1312-3D G2-8 MV1-D2048x1088-3D G2 MV1-D2048x1088-3D G2-S10 Sensor Resolution 3D modes PF A1024B Mono/ Global shutter PF A1024B Mono/ Global shutter PF A1312 Mono/ Global shutter CMV2000 Mono/ Global shutter CMV2000 Mono/ Global shutter 1024 x x x x x D/3D & 2D+ 3D 2D/3D & 2D+ 3D 2D/3D & 2D+ 3D 2D/3D & 2D+ 3D 2D/3D & 2D+ 3D Camera taps Dinamic Range 2 Up to 120dB 2 Up to 120dB 2 Up to 120dB 2 60dB 2 60dB MV1-D2048-3D G2 CMV4000 Mono/ Global shutter 2048 x D/3D & 2D+ 3D 2 60dB 44
45 Products - Overview 3D cameras Camera Specifications Interface Frame rate Pixel clock Camera taps Grayscale resol. MV-D1024E-160-3D01-CL CameraLink 1600fps 80MHz 2 8 / 10 / 12Bit MV1-D1024E-3D G2 GigE 3900fps 80MHz 2 8Bit MV1-D1312-3D G2-8 GigE 3900fps 80MHz 2 8Bit MV1-D2048x1088-3D G2 GigE 11060fps 48MHz 2 8Bit MV1-D2048x1088-3D G2-S10 GigE 11060fps 48MHz 2 8Bit MV1-D2048-3D G2 GigE 9730fps 48MHz 2 8Bit 45
46 Thank you very much for your attention Photonfocus AG Bahnhofplatz 10 CH-8853 Lachen SZ Switzerland Phone: Date: January 2016 Produced by: M. Krist 46
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