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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HIVE cylinder display;
Document Type: Research Article
January 13, 2019
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