02_representation_4 - Data Representation and Basic...

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Unformatted text preview: Data Representation and Basic Processing August 27, 2009 CS 53000 - Introduction to Scientifc Visualization CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 Outline Grid Structure Interpolation Search Preprocessing CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 Input Data Discrete positions (vertices) N dimensions, N=1, 2, 3, ... With or without connectivity inFormation Structured Unstructured Scattered grid topology CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 Grid Structure Classifcation Geometry Position oF vertices in Euclidean space Structured / unstructured Topology Cells Connectivity inFormation Neighborhood defnition Structured / unstructured CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 UniForm implicit relationship between points positions can be computed (procedural) Grid Geometry UniForm grid P i,j P , x y P i,j,k = P , + i x e x + j y e y + k z e z CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 Structured implicit relationship between points positions can be computed (procedural) Grid Geometry Rectilinear grid P i,j,k = P , + x [ i ] e x + y [ j ] e y + z [ k ] e z P , P i,j x [ i ] y [ j ] y [1] x [1] CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 7 Grid Geometry Unstructured No underlying structure Required explicit position oF every vertex ( x n , y n , z n ) ( x k , y k , z k ) CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 8 Grid Topology Structured (quadrilateral / hexahedron) Implicit connectivity between vertices Implicit cell defnition Associated with structured geometry: - very eFfcient position location Pixel j i CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 9 Grid Topology Structured (quadrilateral / hexahedron) Implicit connectivity between vertices Implicit cell defnition Associated with structured geometry: - Implicit triangulation CS530 - Introduction to Scientifc Visualization Purdue University Spring 08 CS 53000 - Data Representation and Basic Processing - 08/27/2009 Hexahedron Quadrilateral Grid Topology Structured (quadrilateral / hexahedron) Implicit connectivity between vertices...
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This note was uploaded on 10/24/2009 for the course CS 530 taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.

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02_representation_4 - Data Representation and Basic...

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