Extract

Previous research has shown that contrast sensitivity improves progressively as adaptation luminance is increased. This paper examines a way of simulating effect of change of adaptation luminance upon contrast sensitivity. Matlab was used in simulation and 14 pictures were simulated. 10 pictures of the 14 pictures were processed by Matlab software to filter certain spatial frequencies of luminance. 20 subjects were in the experiment answering 14 word lists concerned with 14 pictures. The most important finding was that effect of change of adaptation on contrast sensitivity can be simulated and shown in a direct way. It was concluded that in lighting research, an alternative approach for doing experiments can be doing experiments in a simulated environment. It implied that in interior lighting design, energy saving should not be an excuse to deprive people’s well-being.

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