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Open Access Development of a Camera-Based Projection Mapping System for Non-Flat Surfaces

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While most conventional projection surfaces are flat, there are many situations where the surfaces are uniquely shaped – such as the Cylinder display at the Curtin University HIVE visualisation facility. This paper describes a student project to develop a system which will automatically generate a set of warp-blend meshes for multiple projectors so that the projected output will have correct display geometry across the full projection surface. The HIVE Cylinder display consists of a 180° half-cylinder display surface with 8 m diameter and 3 m height. Three projectors illuminate the display surface and the display is stereoscopic capable using framesequential 3D and LC shutter glasses. The software works by sending a series of calibration test patterns to the projectors, which are photographed by a camera, processed to calculate a projection map, output as a set of warp-blend meshes, which will result in a continuous screen surface that appears to have correct geometry to an observer at a predefined location. The project has been undertaken by a group of students working on several modular components of the overall system: Camera to Computer Interface, Image Generator, Image Processor, Geometry Computation, and Warp-Blend Output.
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Keywords: HIVE cylinder display; multiple projectors; warp/blend meshes

Document Type: Research Article

Publication date: January 13, 2019

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  • For more than 30 years, the Electronic Imaging Symposium has been serving those in the broad community - from academia and industry - who work on imaging science and digital technologies. The breadth of the Symposium covers the entire imaging science ecosystem, from capture (sensors, camera) through image processing (image quality, color and appearance) to how we and our surrogate machines see and interpret images. Applications covered include augmented reality, autonomous vehicles, machine vision, data analysis, digital and mobile photography, security, virtual reality, and human vision. IS&T began sole sponsorship of the meeting in 2016. All papers presented at EIs 20+ conferences are open access.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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