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Article Data
Article Ref
8018-YFHB-5239
Date Created
Wed, 2nd Apr 2014
Date Modified
Fri, 3rd Oct 2014

   Ways that environmental variables affect scan data quality

Question 

How do environmental variables such as vibrations, dust, temperatures changes, various light conditions, and changing object surfaces affect the quality of the scan data?

Answer 

Let’s take each variable one at a time.

Vibration: Structured light scanners, such as the HDI series, must be relatively still during the sequence of frames required to capture a scan image. This means that vibration and relative movement between the subject and a scanner will have a significantly adverse effect on the scan data.

Dust: Obviously, significant build-up on the scanner's lenses would be an issue for any scanner. However, the HDI 120 is the ONLY scanner that is IP67 rated for use in dusty environments. It is truly one of the few optical scanners designed and built for the factory floor.

Temperatures changes: Both the HDI advance and the HDI 120 have been designed to minimize the impact of temperature changes on the scan data accuracy. Development is ongoing in this area, so please contact your sales representative to get the latest information.

Lighting Conditions: All HDI scanners have both manual and automatic exposure control settings to help compensate for environmental lighting conditions. However, some care needs to be taken to control lighting conditions for optimum scanning. Moving shadows and changing lighting conditions during a scan should be avoided. Scanning in direct sunlight is not possible, as the projection light source is not bright enough for such conditions.