Multispectral Laboratory
The Institute of Imaging & Computer Vision has its own multispectral laboratory for multispectral imaging, analysis and true-color rendering. The equipment ranges from simple color charts and various analysis software to complex measuring devices such as the spectroradiometer CS2000.
Multispectral camera
By sampling the visible electromagnetic spectrum, the multispectral camera enables significantly higher color recording quality than conventional RGB cameras. It is therefore used for reference color imaging.
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Filter wheel
The HS10 high-speed filter wheel allows the flexible setup of a multispectral camera with filter wheel technology. By means of a C-mount adapter on the camera side, any industrial cameras can be connected. The F-mount adapter on the lens side allows for the easy connection of F-mount lenses.
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Monochrome camera uEye 2240
This monochrome camera is used, with the filter wheel among other things, to take multispectral images.
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Optical bandpass filters, 50mm diameter
These optical bandpass filters are, in a slightly smaller version, also used in the multispectral cameras described above.
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Spectroradiometer Konica-Minolta CS 2000
The spectroradiometer CS 2000 allows extremely precise spectral measurements with a resolution in the visible light range of 1nm.
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Monochromator Oriel Cornerstone 130, 1/8m with lamp
The monochromator emits a narrowband light whose bandwidth and central wavelength can be precisely adjusted mechanically or by software. The incoming light (here from a 75W Xenon lamp) is mirrored and diffracted by one of the two gratings. The spectrally expanded light is then made available at the output of the monochromator.
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X-Rite EyeOne Pro Spectrophotometer
The EyeOne Pro spectrophotometer enables reflectance and emission measurement with an optical resolution of 10nm in the wavelength range of visible light. Ambient light can also be measured using a specific measuring head.
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Various X-Rite ColorChecker targets
The color charts are used to check and calibrate the color reproduction and to create ICC-profiles.
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Optical Simulation Software Zemax (Zemax Development Corporation)
| Optical systems can be modelled and analyzed using the Zemax software. The design of optical systems is also supported. It is, for example, possible to display the 3D layout of a system, its aberrations and its spot diagramm for various angles of incidence and wavelengths. |  |
Calibration software Eye-One Match 3 (X-Rite)
The Eye-One Match Software allows a user-friendly creation of ICC-profiles to calibrate
The measuring device used with this software is the X-Rite EyeOne Pro. |
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Professional profile creation software Profile Maker 5 Platinum (X-Rite)
With Profile Maker 5 Platinum, ICC-profiles of
can be professionally created, edited, optimized and tuned. The X-Rite EyeOne Pro spectrophotometer is also used with this software. |
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Softproof workstation
The softproof workstation enables a direct visual comparison between a model and its image displayed on a monitor. The monitor is shielded by a box so that no extraneous light interferes with the comparison. The softproof workstation was developed and manufactured by the Color and Image Processing Research Group.
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CTF measuring station
| The CTF measuring station allows the measurement of both the Camera Transfer Function (CTF) and the Opto-Electronic Conversion Function (OECF), which describes the relation between the irradiance on the sensor of a camera and the digital output value. The CTF enables a linearization of the measured values coming from the camera. The camera is illuminated by an integrating sphere and can be moved automatically on a sliding carriage, which changes the irradiance impinging on the sensor. The position of the camera is measured exactly by a position sensor with a resolution of 50µm.
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