Conspicuity of Urban Objects
Dates: January 2004 - 2010
Staff: Steve Fotios, Navaz Davoudian
Funding: PhD studentship funded by the Art University of Esfahan, Iran
Davoudian N & Fotios S, The Impact of Spatial Characteristics of Background Lighting on the Visual Saliency of Urban Objects, Lux Europa, Istanbul 2009, 1121-1126
Davoudian N & Fotios SA, Background Patterns of Light and Their Impact on the Saliency of Illuminated Objects in Urban Spaces, Light Pollution & Urban Lighting 2007, Istanbul, Turkey, September 2007
Davoudian N & Fotios SA, Alternatives to brightness for achieving night-time conspicuity, Urban Nightscape 2006, annual meeting of CIE divisions 4 & 5, Athens, 21-23 September 2006, pp. 62-63
Introducing a Model of Saliency Level Based On Visual Complexity and
Luminance Contrast with Implication in Urban Lighting
This PowerPoint presentation describes the methodology used in tests.
The Figure shows the results of the tests carried out to examine the effect of background density. It can be seen that higher background densities reduce the saliency of an object. Note that a target of luminance contrast 3 with a low density of background lighting has a similar saliency to a target of luminance contrast 5 but with a medium or high level of background density: reducing background density allows the luminance of an object to be reduced whilst maintaining the same level of saliency.