logging in or signing up Dynamic Mapping of Raster-Data autopilot Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 409 Category: Science & Tech.. License: All Rights Reserved Like it (2) Dislike it (1) Added: July 29, 2009 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: rajarajan.ec (34 month(s) ago) plz allow to download Saving..... Post Reply Close Saving..... Edit Comment Close By: Harman (46 month(s) ago) good stuff Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Dynamic Mapping of Raster-DataFor 3D Geovirtual Environments : Dynamic Mapping of Raster-DataFor 3D Geovirtual Environments Matthias Trapp, Jürgen DöllnerHasso-Plattner-Institute, University of Potsdam, Germany 13th International Conferenceon Information Visualisation14-17 July motivation : motivation Using 3D geovirtual environments as scenery for visualization of dynamic geo-referenced thematic data motivation : motivation Using 3D geovirtual environments as scenery for visualization of dynamic geo-referenced thematic data Preprocessing Time: days-hours Preprocessing Time: hours-minutes Preprocessing Time: minutes wrap-up: challenges & goals : wrap-up: challenges & goals Strong coupling of geometry and appearance: Real-time rendering constraints Large-scale data sets require specific out-of-core renderer Results in (time-consuming) data pre-processing ? Cannot be used to visualize time-critical data Goals: partially decoupling geometry and appearance to… …enable dynamic multi-texture mapping …enable color transfer function …for a large number of mapping configurations …in real-time overview: dynamic texture mapping : overview: dynamic texture mapping Given input data: 3D point (fragment) of original model Data & color layers Mapping parameterizations Requested: final color Data & color layers: 1D/2D/3D image/textures data values, masks color gradients texture coordinate generation : texture coordinate generation Projective texture mapping [Everitt 2001] Orthogonal projection matrix: U V color transfer functions : color transfer functions Describes color mapping of data values Define blending equations between mappings rendering at a glance : rendering at a glance Extending OpenGL/DirectX multi-texturing pipeline Single-pass rendering: Per-fragment dynamic texturing using shader programs GPU Data representation: texture arrays Projective mappings encoded in texture-buffers Performance evaluation: application examples : application examples Hierarchical combination of raster data layers Building category data Traffic frequency data application examples : application examples Object or route highlighting Landmark objects Landmark objects Route application examples : application examples Projective symbols to facilitate the design of interactive 3D digital maps application examples : application examples Focus + context visualization: 2D magic lenses conclusions : conclusions Summary: Extendable concept for dynamically mapping 2D raster-data Approach based on projective texture mapping Fully-hardware accelerated implementation Limitations: Works only for 3D GeoVE that can be approximated by a plane Limited texture resolution Future Work Extend color transfer to style transfer functions thank you... : thank you... Contact: Matthias Trapp email@example.com Jürgen Döllner firstname.lastname@example.org Computer Graphics System Group www.hpi.uni-potsdam.de/3d Researchgroup 3D-Geoinformation www.3dgi.de You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.