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Title: Human speckle perception threshold for still images from a laser projection system
Authors: Roelandt, Stijn ×
Meuret, Youri
Jacobs, An
Willaert, Koen
Janssens, Peter
Thienpont, Hugo
Verschaffelt, Guy #
Issue Date: 6-Oct-2014
Publisher: Optical Society of America
Series Title: Optics Express vol:22 issue:20 pages:23965-23979
Article number: 216678
Abstract: We study the perception of speckle by human observers in a
laser projector based on a 40 persons survey. The speckle contrast is first objectively measured making use of a well-defined speckle measurement method. We statistically analyse the results of the user quality scores, revealing that the speckle perception is not only influenced by the speckle contrast settings of the projector, but it is also strongly influenced by the type of image shown. Based on the survey, we derive a speckle contrast threshold for which speckle can be seen, and separately we investigate a
speckle disturbance limit that is tolerated by the majority of test persons.
ISSN: 1094-4087
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Electrical Engineering (ESAT) TC, Technology Campuses Ghent and Aalst
× corresponding author
# (joint) last author

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