CCTV mediated observation versus non-mediated ...

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11th International Symposium on Human Factors in Organisational Design and Management (ODAM 2014) CPH Conference

CCTV mediated observation versus non-mediated observation: investigating perceived image quality with different test systems
Paper
Author:Arthur BENNIS (HAN University of Applied Sciences, The Netherlands)
Renske B. LANDMAN (ErgoS Engineering and Ergonomics, The Netherlands)
Dick T.M.J. LENIOR (HAN University of Applied Sciences, The Netherlands)
Date: 2014-08-18     Track: A -Special sessions     Session: A2 - Human factors guidelines for CCTVcontrol centre design – part I
DOI:10.4122/dtu:2238

A basic question in practice is whether perceived image quality decreases when using a CCTV system (mediated) compared to direct observation (non-mediated). Three main characteristics were investigated: (1) test systems, (2) light conditions, and (3) image scaling. At (1) interpretable differences were found. At (2) normal light conditions (500 lux), no differences were found between mediated and non-mediated vision, while at 50 lux, mediated vision is significantly better. At (3) upscaling has a negative effect on quality of mediated observation. The results lead to clear indications for the setup of future research in laboratory as well as in practice.