Two recognition modes for colour sensing
A
Silicann Technologies product story
Edited by the Engineeringtalk editorial team
Apr 10, 2006
Colour sensor realises true-to-perception industrial colour recognition for up to 255 colours with the RGB colour values transformed real-time in one of the true-to-perception colour spaces.
Colours can be used for the aesthetical formation of products.
In this case, reproducible colouring is essential.
Hence during the production process a colour sensor is required for supervising the quality of colour.
Colours are also used to mark or code objects during production processes.
By means of the marks, assignments or selections are realised.
This is for instance done in automated product flows.
In this case a colour sensor for secure recognition of the colour marks is needed.
Light is also visible as colour.
Recognition and quality control of light colour referring to self-shining objects such as lamps and LEDs is mainly realised with colour sensors.
The concept of colour is defined by the human eye perception.
From there a colour sensor system for a reliable and right (that is according to the human colour perception) colour recognition has to mimic technically the human colour perception.
However, usual RGB sensors see colour differently from the human being.
This is due to the simple colour signal processing of the sensors.
For that reason, the recognition results for such colour sensors (for example good or bad) are significantly different from the ones of human beings.
This could mean a considerable risk and higher costs for the automation of colour recognition - for example in quality control.
The colour sensor PCS-II from Silicann Technologies realises true-to-perception industrial colour recognition for up to 255 colours.
The RGB colour values are transformed real-time in one of the true-to-perception colour spaces - LAB, LUV or DIN99.
Two recognition modes (colour sorting and colour checking) are implemented.
The teaching of colours is done with a PC.
The recognition results can be read out via USB or RS232 and are provided on eight output ports.
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