TY - GEN
T1 - Defocus blur correcting projector-camera system
AU - Oyamada, Yuji
AU - Saito, Hideo
PY - 2008
Y1 - 2008
N2 - To use a projector anytime anywhere, a lot of projector-camera based approaches have been proposed. In this paper, we focus on a focal correction technique, one of projector-camera based approaches, reduces an effect of defocus blur which occurs when a screen is located out of projector's depth-of-field. We propose a novel method for estimating projector defocus blur on a planar screen without any special measuring images. To estimate a degree of defocus blur accurate, we extract sub-region which is well-suited for defocus blur estimation in a projection image and estimate the degree of defocus blur at each extracted region. To remove the degradation caused by the defocus blur, we pre-correct the projection image depends on the degree of defocus blur before projection. Experimental results show that our method can estimate the degree of defocus blur without projecting any special images and pre-corrected image can reduce the effect of the defocus blur.
AB - To use a projector anytime anywhere, a lot of projector-camera based approaches have been proposed. In this paper, we focus on a focal correction technique, one of projector-camera based approaches, reduces an effect of defocus blur which occurs when a screen is located out of projector's depth-of-field. We propose a novel method for estimating projector defocus blur on a planar screen without any special measuring images. To estimate a degree of defocus blur accurate, we extract sub-region which is well-suited for defocus blur estimation in a projection image and estimate the degree of defocus blur at each extracted region. To remove the degradation caused by the defocus blur, we pre-correct the projection image depends on the degree of defocus blur before projection. Experimental results show that our method can estimate the degree of defocus blur without projecting any special images and pre-corrected image can reduce the effect of the defocus blur.
KW - Defocus blur
KW - Focal correction
KW - Projector-camera system
UR - http://www.scopus.com/inward/record.url?scp=57049174522&partnerID=8YFLogxK
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U2 - 10.1007/978-3-540-88458-3-41
DO - 10.1007/978-3-540-88458-3-41
M3 - Conference contribution
AN - SCOPUS:57049174522
SN - 3540884572
SN - 9783540884576
VL - 5259 LNCS
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 453
EP - 464
BT - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
T2 - 10th International Conference on Advanced Concepts for Intelligent Vision Systems, ACIVS 2008
Y2 - 20 October 2008 through 24 October 2008
ER -