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Research on Volume Rendering of CFD Scalar Data and Parallel Rendering

Author: HuJian
Tutor: LiSiKun
School: National University of Defense Science and Technology
Course: Computer Science and Technology
Keywords: Unstructured grids Volume Rendering Parallel rendering VTK Paraview Plug-in mechanism
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 26
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Abstract


Unstructured grid volume rendering is one of the key elements of scientific computing visualization research , but unstructured grid volume rendering computationally intensive , complex process , resulting in slower graphics speed , can not meet the real-time visualization of the increasing requirements , and therefore improve the efficiency of the unstructured grid volume rendering algorithm is efficient volume rendering is an important research . In this paper, the traditional algorithm for image space fragment sorting efficiency is not high , k-buffer processing and optimization methods . The Paraview widely used open source parallel visualization platform , data visualization algorithm research will be integrated to the the Paraview platform efficient parallel running , is conducive to the realization of large-scale data parallel visualization . This paper studied the expansion of technology , Paraview Paraview on a parallel a visual extension methods and programming specifications summarizes data visualization algorithm . Of this work and the research results obtained are summarized as follows : . HAVS algorithm for the mainstream in the sort of image space inefficient proposed optimization process for k-buffer to improve the rendering efficiency ; addition , k value size is an important influence on the accuracy and efficiency of the draw . Existing HAVS algorithm to buffer storage chip arity k is limited to 6, the constraints algorithm accuracy and performance . This paper extends the range of values ??of k , and improve the rendering precision . The parallel visualization platform extension application needs . Paraview visualization plug-in based parallel programming specifications and methods , and through parallel volume rendering algorithm parallelization verified filter plug and volume rendering algorithm class Mapper plug-ins , this method can effectively guide the user to achieve parallel data visualization algorithm based on the plug-in extension methods . In order to further reduce the Paraview parallel visualization platform extension workload , research presented through parallel volume rendering algorithm parallelization verified Paraview parallel visualization program direct extension methods , and the unstructured mesh body the through direct extension methods added Paraview in drawing algorithm HAVS , the method provides a user-selectable for Paraview the expansion .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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