title: Speckle disturbance limit in laser-based cinema projection systems.
abstract: In a multi-disciplinary effort, we investigate the level of speckle that can be tolerated in a laser cinema projector based on a quality of experience experiment with movie clips shown to a test audience in a real-life movie theatre setting. We identify a speckle disturbance threshold by statistically analyzing the observers' responses for different values of the amount of speckle, which was monitored using a well-defined speckle measurement method. The analysis shows that the speckle perception of a human observer is not only dependent on the objectively measured amount of speckle, but it is also strongly influenced by the image content. The speckle disturbance limit for movies turns out to be substantially larger than that for still images, and hence is easier to attain.
authors.affiliation: Applied Physics research group (APHY), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium.
authors.forename: Guy
authors.initials: G
authors.lastname: Verschaffelt
authors.affiliation: Brussels Photonics Team (B-PHOT), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium.
authors.forename: Stijn
authors.initials: S
authors.lastname: Roelandt
authors.affiliation: Brussels Photonics Team (B-PHOT), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium.|Light &Lighting Laboratory, KU Leuven, Gebroeders De Smetstraat 1, B-9000 Gent, Belgium.
authors.forename: Youri
authors.initials: Y
authors.lastname: Meuret
authors.affiliation: iMinds research center for Studies on Media, Information and Telecommunication (SMIT), Vrije Universiteit Brussel, Pleinlaan 9, B-1050 Brussels, Belgium.
authors.forename: Wendy
authors.initials: W
authors.lastname: Van den Broeck
authors.affiliation: iMinds research center for Studies on Media, Information and Telecommunication (SMIT), Vrije Universiteit Brussel, Pleinlaan 9, B-1050 Brussels, Belgium.
authors.forename: Katriina
authors.initials: K
authors.lastname: Kilpi
authors.affiliation: iMinds research center for Studies on Media, Information and Telecommunication (SMIT), Vrije Universiteit Brussel, Pleinlaan 9, B-1050 Brussels, Belgium.
authors.forename: Bram
authors.initials: B
authors.lastname: Lievens
authors.affiliation: iMinds research center for Studies on Media, Information and Telecommunication (SMIT), Vrije Universiteit Brussel, Pleinlaan 9, B-1050 Brussels, Belgium.
authors.forename: An
authors.initials: A
authors.lastname: Jacobs
authors.affiliation: Barco - Projection Division, Noordlaan 5, B-8520 Kuurne, Belgium.
authors.forename: Peter
authors.initials: P
authors.lastname: Janssens
authors.affiliation: Brussels Photonics Team (B-PHOT), Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium.
authors.forename: Hugo
authors.initials: H
authors.lastname: Thienpont