NDLI: High-resolution lighting of 3D reliefs using a network of projectors and cameras

Content Provider	IEEE Xplore Digital Library
Author	Sajadi, B. Tehrani, M.A. Rahimzadeh, M. Majumder, A.
Copyright Year	2015
Description	Author affiliation: Dept. of Comput. Sci., Univ. of California, Irvine, Irvine, CA, USA (Sajadi, B.; Tehrani, M.A.; Rahimzadeh, M.; Majumder, A.)
Abstract	Vibrant lighting of relief maps via high-resolution dynamic projected imagery can be a powerful tool for simulation, augmented reality, and visualization, enabling several scientific, educational and entertainment applications. This is usually achieved via multiple projectors lighting the relief map, which are then sensed by multiple cameras for geometric and color calibration. However, cumbersome semi-automatic calibration techniques have limited the applicability of such systems. In this paper we present the first fully-automatic lighting system that registers high-resolution images on arbitrarily-shaped relief maps using a network of projectors and cameras. The devices are uncalibrated and casually aligned with the only constraint that every surface point of the relief is seen by at least two of the cameras. Our method achieves precise geometric registration followed by seamless edge blending. Quick recalibration allows changes in the position and number of the devices, as well as the surface geometry. Thus, our work can enable easy deployment of spatially augmented reality environments in various scales playing a fundamental role in increasing their popularity in several applications like geospatial analysis, architectural lighting, cultural heritage restoration, theatrical lighting and visualization. It can also be applied to any immersive VR environments on non-planar surfaces like domes or cylinders.
Starting Page	1
Ending Page	4
File Size	1978427
Page Count	4
File Format	PDF
ISBN	9781467380904
ISSN	2161203X
DOI	10.1109/3DTV.2015.7169372
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-08
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geometry Computers Three-dimensional displays Image color analysis Lighting self-calibration Cameras camera-based calibration Calibration immersive visualization multiprojector display auto-registration
Content Type	Text
Resource Type	Article

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