Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Fast Projection-Based Ray-Casting Algorithm for Rendering Curvilinear Volumes
IEEE Transactions on Visualization and Computer Graphics
AN ANALYSIS OF APPROACHES TO RAY-TRACING CURVILINEAR GRIDS
AN ANALYSIS OF APPROACHES TO RAY-TRACING CURVILINEAR GRIDS
3D screen-space widgets for non-linear projection
GRAPHITE '05 Proceedings of the 3rd international conference on Computer graphics and interactive techniques in Australasia and South East Asia
Single camera flexible projection
Proceedings of the 5th international symposium on Non-photorealistic animation and rendering
Nonlinear disparity mapping for stereoscopic 3D
ACM SIGGRAPH 2010 papers
Multi-perspective stereoscopy from light fields
Proceedings of the 2011 SIGGRAPH Asia Conference
A Viewer-Centric Editor for 3D Movies
IEEE Computer Graphics and Applications
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We present a new stereoscopic compositing technique that combines volumetric output from several stereo camera rigs. Unlike previous multi-rigging techniques, our approach does not require objects rendered with different stereo parameters to be clearly separable to prevent visual discontinuities. We accomplished that by casting not straight rays (aligned with a single viewing direction) but curved rays, and that results in a smooth blend between viewing parameters of the stereo rigs in the user-defined transition area. Our technique offers two alternative methods for defining shapes of the cast rays. The first method avoids depth distortion in the transition area by guaranteeing monotonic behavior of the stereoscopic disparity function while the second one provides a user with artistic control over the influence of each rig in the transition area. To ensure practical usability, we efficiently solve key performance issues in the ray-casting (e.g. locating cell-ray intersection and traversing rays within a cell) with a highly parallelizable quadtree-based spatial data structure, constructed in the parameterized curvilinear space, to match the shape definition of the cast rays.