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  • 1
    Electronic Resource
    Electronic Resource
    The back-buffer algorithm: An extension of the radiosity method to dynamic environments (1986)
    Springer
    The visual computer 2 (1986), S. 298-306 
    Details
    ISSN: 1432-2315
    Keywords: Light reflectance models ; Radiosity ; Computer animation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract An efficient algorithm is introduced for the production of realistic image sequences of dynamic environments. The practicality of the radiosity method, which computes the interreflection of light within complex diffuse environments independent of viewpoint, is extended to dynamic environments where the paths of moving objects have been predefined. The algorithm takes advantage of the object coherence between static portions of an environment. A preprocessing stage executes once for a given image sequence and precalculates constant geometrical relationships in the environment. When the environment geometry changes, an update stage determines the global illumination using information provided by the preprocessor and the current positions of all moving objects. Test environments show speedups of at least twenty-five times over previous radiosity methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02020430
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Radiosity: A method for computing global illumination (1986)
    Springer
    The visual computer 2 (1986), S. 291-297 
    Details
    ISSN: 1432-2315
    Keywords: Radiosity ; Reflectance models ; Interreflection ; Diffuse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract The radiosity method for computing the interreflection of light within diffuse environments is described. The development of the method for realistic image synthesis over the past three years is outlined. A short discussion of the underlying theory and implementation is followed by a real life example which illustrates the power and accuracy of the radiosity method and points out the different results from ray tracing procedures. Current and future developments of the radiosity method are outlined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02020429
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A general two-dimensional, graphical finite element preprocessor utilizing discrete transfinite mappings (1981)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 17 (1981), S. 1015-1044 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: Finite element preprocessor programs have been developed in recent years in order to expedite the task of data preparation. A key decision in the design of these programs is the choice of a method for automated mesh generation. Three popular methods (Laplacian, isoparametric and transfinite mappings) are compared. Transfinite mappings with boundary information represented in discrete form are found to possess distinct advantages for the task of mesh generation.A two-dimensional preprocessor program utilizing the discrete transfinite mappings is described. Interactive computer graphics techniques are used extensively to facilitate data preparation and display. The geometry-generating routines are general, and may be used in any finite element application. A specialized graphical ‘attribute editor’ for structural mechanics problems is also described. This editor provides an efficient method of specifying boundary conditions, material properties, loads, etc.
    Additional Material: 27 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620170706
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    Paper (German National Licenses)
    Fulltext
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