PPT-Introduction Terrain Level set and Contour tree

Problem Maintaining the contour tree of a terrain under the following operation ChangeHeight v r Change the height of a vertex v in M to r References 1 H Carr J . GPU-Based Geometry Clipmaps. Arul Prakash Hugues Hoppe. University of Utah Microsoft Research. Terrain Rendering Challenges. Regular grid (image) of height values. Concise storage .  No paging hiccups. CSE 788.14 . Han-Wei Shen. Level Sets. Level set: . Level sets is also called . Isolines. for . n. =2, . isosurface. for . n. =3, or . isocontours. in general. We can use the Marching Cubes algorithm to extract . M. ATLAB. 2. Graphics. Ian Brooks. Institute for Climate & Atmospheric Science. School of Earth & Environment. i.brooks@see.leeds.ac.uk. GRAPHICS. Basic Plotting. Linetypes. , markers, colours, etc. in partnership with:. With support from:. NSF DUE-0903270. Prepared by:. George McLeod. Geospatial Technician Education Through Virginia’s Community Colleges (GTEVCC). Digital Terrain Models. A . digital. GPU-Based Geometry Clipmaps. Arul Prakash Hugues Hoppe. University of Utah Microsoft Research. Terrain Rendering Challenges. Regular grid (image) of height values. Concise storage .  No paging hiccups. MADALGO – Center for Massive Data Algorithmics, a Center of the Danish National Research . Foundation. What. TerraSTREAM. is a collection of software modules for computation on very large digital terrain models.. Contour lines are lines drawn on a map that connect points of equal elevation. If you walk along a contour line you neither gain or lose elevation.  . Picture walking along a beach exactly where the water. Topographic notes. Topographic Map-includes contour lines drawn to represent changes in elevation.. Topographic maps take 3 dimensional ups and downs of the terrain and show them on 2 dimensional surface.. Shiben. . Bhattacharjee. 200607022. shiben@research.iiit.ac.in. Advisor: . Prof. P. J. Narayanan. Why render terrains?. Terrains are a basic need in most graphics application. Geographical information systems. 3 breaks. 24K – 250K. 250K – 750K. 750K – 1M. Processing Steps. 10m DEM, smoothed once (LGDEM). 10m DEM, smoothed 10 times (MDDEM). 30m DEM aggregated, smoothed 10 times (SMDEM). 24. 50. 100. During this block of instruction you will receive training on identifying the major terrain features, minor terrain features, and colors found on a Military map. Demonstrate the ability to find a point on the map using a protractor and determine the elevation using contour lines on a Military map.. TonyChanandLuminitaVese Tony Basic idea in classical active contours Area(inside(C)) Boundary detectionstopping edge-function (external forces) 0 ) ( lim 0 t g g g Example: , , 0 t g g g t p G ug | | Gulshan. . Kumar. School of Fisheries. Contour survey. A contour or a contour line may be defined as the line of intersection of a level surface with the surface of ground. . This . means every . point on a contour line has the same altitude . Mountains Experiment (OLYMPEX). Lynn McMurdie . University of Washington. (co-authors: Angela Rowe, Joe . Zagrodnik. ,. Stacy . Brodzik. , . Thomas . Schuldt. , Robert . Houze. . and. , . Jamin. .