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  • 1
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    Computational geometry issues (1993)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Presented in viewgraph format are some of the benefits of computational geometry for grid generation, including benefits to grid quality and algorithm efficiency. Many efficient algorithms are available, but it is concluded that high aspect ratio triangulations are not among them.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: Unstructured Grid Generation Techniques and Software; p 291-309
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Image processing mini manual (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The intent is to provide an introduction to the image processing capabilities available at the Langley Research Center (LaRC) Central Scientific Computing Complex (CSCC). Various image processing software components are described. Information is given concerning the use of these components in the Data Visualization and Animation Laboratory at LaRC.
    Keywords: COMPUTER OPERATIONS AND HARDWARE
    Type: NASA-TM-107680 , NAS 1.15:107680 , CSCC-A-9
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Unstructured Grid Generation Techniques and Software (1993)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: The Workshop on Unstructured Grid Generation Techniques and Software was conducted for NASA to assess its unstructured grid activities, improve the coordination among NASA centers, and promote technology transfer to industry. The proceedings represent contributions from Ames, Langley, and Lewis Research Centers, and the Johnson and Marshall Space Flight Centers. This report is a compilation of the presentations made at the workshop.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: NASA-CP-10119 , NAS 1.55:10119 , Apr 27, 1993 - Apr 28, 1993; Hampton, VA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Delaunay triangulation and computational fluid dynamics meshes (1992)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: In aerospace computational fluid dynamics (CFD) calculations, the Delaunay triangulation of suitable quadrilateral meshes can lead to unsuitable triangulated meshes. Here, we present case studies which illustrate the limitations of using structured grid generation methods which produce points in a curvilinear coordinate system for subsequent triangulations for CFD applications. We discuss conditions under which meshes of quadrilateral elements may not produce a Delaunay triangulation suitable for CFD calculations, particularly with regard to high aspect ratio, skewed quadrilateral elements.
    Keywords: MATHEMATICAL AND COMPUTER SCIENCES (GENERAL)
    Type: NASA-TM-107663 , NAS 1.15:107663 , Canadian Conference on Computational Geometry; Aug 01, 1992
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Interactive Image-Registration Program (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: REGISTERTOOL computer program provides for interactive registration of images, yielding results used for further processing. Assists user in joining images via tie points. Written in C Language.
    Keywords: MATHEMATICS AND INFORMATION SCIENCES
    Type: LAR-14746 , NASA Tech Briefs (ISSN 0145-319X); 17; 8; P. 61
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Interactive Image-Analysis Program (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: BLOBTOOL computer program used to prepare image for analysis and generates various quantitative measurements of objects or structures present in images. Includes basic input/output capabilities, option to display built-in color tables, and access to on-line help. Written in C Language.
    Keywords: MATHEMATICS AND INFORMATION SCIENCES
    Type: LAR-14767 , NASA Tech Briefs (ISSN 0145-319X); 17; 7; P. 34
    Format: text
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    NASA TECHNICAL REPORTS
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