DSI & FTIR fiducials
Posted: 10 May 2015 05:18 AM   [ Ignore ]
Joined  2015-05-09
Total Posts:  1
New Member

I switched to DSI in FTIR.

I wonder why DSI methods can execute object recognition and why FTIR can`t execute object recognition.
Also, I want to know why FTIR can`t recognize remaining materials although FTIR recognizes materials like hands and rubbers.

Bad English… Sorry ..

Posted: 01 June 2015 02:02 PM   [ Ignore ]   [ # 1 ]
Joined  2008-02-12
Total Posts:  1120

DSI uses a special acrylic, Evonik Endlighten which diffuses the light. As such you can use objects to reflect the light escaping above the interaction surface back to the camera for detection.
FTIR uses total internal reflection which is like fiber optic cable, the this internal reflection is broken or frustrated. This causes the light to escape from the acrylic sheet and the camera detects is. Not all objects do not frustrate TIR effectively as such cannot be detected.


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