color:communication colour basics, scientific basis

Solution through can:view

The can:view is a combined monitor workstation with a built-in standard light box. It offers a highly customised complete solution that resolves all the above problems and many more for the user. The can:view allows you to place originals on the monitor, thus permitting an immediate, absolutely precise comparison between the monitor depiction and original — the magic is in the software.

For this, a number of measures of have been implemented that appear small at first glance, including

We do not require the illumination of the light box to be as close as possible to the standard light types, but instead we measure the actual spectral properties of the lamps and calculate them into the spectral representation.
We do not assume completely homogeneous illumination, but determine it and use it for the image computation.
Through absolute colorimetry, the depiction is independent of the monitor white point. Therefore, we can take advantage of the native white point and thus the maximum colour space of the monitor. This way, exactly the same image can be produced on differently calibrated monitors.
The ambient light is determined separately and spectrally and calculated into the image.
Spectral profiling through telephotometric measurement produces very accurate profiles that can be optimised for different observers.
The can:view constantly automatically monitors the operating points of the lighting and monitor.
In addition to ICC-compliant colour calculation, we have developed a spectral model that provides a higher colour quality.
With the complete spectral substructure of the image calculation software, not only can CIELab images be displayed in true colour, but also multi-spectral images.

Solution through can:scan

The can:scan is a multi-spectral measuring device. It combines the spectral measurement properties of a spectrophotometer with the locally resolved measurement of an image-recording process. The result is a so-called multi-spectral dataset. For each pixel there is not just a three-position colour value (e.g. RGB or Lab) provided, but behind each pixel lies a complete reflectance spectrum. Only then is it possible to calculate colour images with high colour quality — and that for any type of light (emission spectra) and viewing curves.

The can:scan is set up like a little, integrated photo studio:

The object is inserted in the recording area of the can:scan and the device is closed.
The object is illuminated at an angle of 45° with a known emission spectrum. The grey-scale camera views the object from an angle of 0°. The spectral properties of the camera and lens are known.
A filter wheel with spectral band-pass filters rotates in front of the camera. Each spectral dataset contains sample data for each individual filter.
With the knowledge of the spectral properties of all optical components involved in the measurement (lighting, lens, filters, camera, etc.), it is possible to calculate from the samples the only unknown factor, namely the reflectance of the object.

The multi-spectral images from the can:scan offer the following advantages:

Lab images can be calculated from the dataset. In addition to the pure colour, the structure and colour variations of the object caused by the structure are recorded.
Each dataset contains pixel-precise spectral measurement values, enabling subsequent measurements to be made of any object areas. These measurements can be stored and transferred in various formats (ISO, QTX, etc.). Also multi-colour, patterned objects can be recorded and assessed.
The recordings are created via optical imaging, i.e. without contact. This also includes objects whose colour impression changes when touched (terrycloth, deep-pile fabric, velvet, etc.) or which are not flat (3-dimensional objects). In the PDF file we have included all the facts, technical information and further details for you.

We have summarized all the facts, technical information and further Details in this PDF Document.

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