Miniaturized hyperspectral imaging cameras

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Bennett Hall
5 years ago
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1 Fraunhofer IOSB KCM SpectroNet Collaboration Forum 2015 Miniaturized hyperspectral imaging cameras 1

2 Hyper spectral imaging (HSI) 2

3 HSI sensor types from imec filter layouts Linescan Snapshot Mosaic Snapshot Tiled wedge design 100 bands nm per-pixel design 4x4: nm 5x5: nm area design 32 bands nm 3

Snapshot Mosaic (imec) XIMEA camera MQ022HG-IM-SM4X4-470-620 Key specification Spectral resolution: FWHM: Spatial

4 Snapshot Mosaic (imec) XIMEA camera MQ022HG-IM-SM4X Key specification Spectral resolution: FWHM: Spatial resolution: Speed: 4x4 mosaic = 16 bands in nm ~ 15nm from 512x272 (per band) up to 170 data-cubes / s (full sensor frame) 4

Snapshot Mosaic (imec) XIMEA camera MQ022HG-IM-SM5X5-600-1000

resolution: Speed: 5x5 mosaic = 25 bands in 600-975nm ~ 16nm

5 Snapshot Mosaic (imec) XIMEA camera MQ022HG-IM-SM5X Key specification Spectral resolution: FWHM: Spatial resolution: Speed: 5x5 mosaic = 25 bands in nm ~ 16nm from 409x217 (per band) up to 170 data-cubes / s (full sensor frame) 5

Fabry-Perot interference filter Transmitted wavelength: kλ=2nlcosθ A filter designed for a specific wavelength λ will also transmit several other wavelengths, e.g. λ/2 and the wavelength of the second order harmonics (on snapshot mosaic sensors).

6 Fabry-Perot interference filter Transmitted wavelength: kλ=2nlcosθ A filter designed for a specific wavelength λ will also transmit several other wavelengths, e.g. λ/2 and the wavelength of the second order harmonics (on snapshot mosaic sensors). The sensor is designed to work in a specific spectral range (active range). Wavelength ranges outside of the active range must be cut off by bandpass filters. 6

Band pass filters to retain second order peaks: Band pass

7 Bandpass filters (SM 5x5) Bands with first order response at nm have a second order response at nm. Band pass filters to retain second order peaks: Band pass filter for the full active range: nm or nm nm 7

8 Calibration data Each sensor is calibrated individually! The complete calibration data is delivered (and stored to the XIMEA cameras). 140 MQ022HG-IM-SM5X , SerNr: calibration data nm

9 HSI industrial applications Medical Imaging Microscopy and Endoscopy Precision Agriculture Remote Sensing Mineralogy Environmental Monitoring Life science instrumentation Optical sorting Food inspection 9

10 Waste sorting white plastics Color image Camera MQ022CG-CM CMOSIS CMV2000 5x5 snapshot mosaic, halogen lamp illumination, filter set nm NIR (intensity) HSI separated 10

11 Food / organic sorting green leafs Color image Camera MQ022CG-CM CMOSIS CMV2000 5x5 snapshot mosaic, halogen lamp illumination, filter set nm NIR (intensity) HSI separated 11

12 Food / organic sorting green leafs 5x5 snapshot mosaic, halogen lamp illumination, filter set nm NIR (intensity) HSI separated 12

13 Miniaturization Miniaturized hyperspectral imaging cameras 13

14 Software environments Support for Compatible with Running on Windows Linux Mac-OS USB3-Vision GenICam GenTL XIMEA API / SDK Intel x86 / x64 ARM (Cortex A9 +) embedded platforms 14

HSI software partners perception park, Graz, Austria www.perception-park.

time NICTA, Canberra, Australia www.scyllarus.

15 HSI software partners perception park, Graz, Austria Chemical Color Imaging integrates with existing image processing systems short development time NICTA, Canberra, Australia powerful, full featured hyperspectral imaging engine automatic recovery of scene illuminant available for license as C++ API, standalone application and Matlab toolbox 15

16 Supported software libraries Extremely compatible compatible with more than 30 popular machine vision libraries 16

17 Yes, we can compare apples with pears! 4x4 snapshot mosaic, halogen lamp illumination, filter set nm 17

18 Thank you for your attention 18

Hyperspectral imaging (HSI) goes embedded All rights reserved Max Larin, 1

Hyperspectral imaging (HSI) goes embedded 2015 All rights reserved Max Larin, max.larin@ximea.com 1 Hyperspectral Imaging (HSI) goes embedded Seeing the invisible with Miniature intelligent HSI Cameras