The Role of Specular Reflection in the Perception of Transparent Surfaces – The Influence on User Safety
The perception of transparency in human’s build environment constitutes a significant cognitive challenge, also affecting the user’s safety. It is supposed that, apart from the mid-level vision transparency cues, specular reflection is also a key feature of the perceived image taken into consideration by the visual system. In the paper, this optical phenomenon was observed and estimated based on the author’s own method, here called the “pictorial image analysis”, which uses pairs of photographs: unmodified – showing the virtual image on the building’s transparent façade, and modified – devoid of this image. The images were digitally processed to extract the reflection laid over the undisturbed transmitted image. The results show that evident specular reflection significantly improves the perception of transparent surfaces, but, in the case of excess or back-lit panes, it can hardly be used as perceptual cue.
Keywordstransparency perception mirror-like reflections building’s façade
Unable to display preview. Download preview PDF.
- 1.Brzezicki, M.: Perceptual mechanisms of transparency recognition as measures of increased human spatial orientation. In: Vink, P., et al. (eds.) Advances in Social and Organizational Factors, pp. 73–82. CRC Press, Boca Raton (2012)Google Scholar
- 2.Arnheim, R.: Art and visual perception: a psychology of the creative eye. University of California Press (1971)Google Scholar
- 4.Brzezicki, M.: Symmetry of superimposed facade reflection patterns. Symmetry: Art and Science (1-4), 34–37 (2010)Google Scholar
- 5.Abramoff, M., Magelhaes, P., Ram, S.: Image processing with ImageJ. Biophotonics International 11(7), 36–42 (2004)Google Scholar