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  • 1
    Electronic Resource
    Electronic Resource
    A new space subdivision method for ray tracing CSG modelled scenes (1987)
    Springer
    The visual computer 3 (1987), S. 98-108 
    Details
    ISSN: 1432-2315
    Keywords: Image synthesis ; Ray-tracing ; Subdivision ; Constructive solid geometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract A new algorithm for space tracing with CSG modelled scenes is presented. Space is divided in an irregular fashion to fit the objects as closely as possible. For this reason, primitive minimal bounding boxes are computed. Space subdivision is achieved in two steps: partitioning in projection plane and depth partitioning. A set of 3D regions named cells are then created. A Boolean CSG tree is distributed into the cell structure to form in each cell the minimal boolean CSG tree using the relevant primitives. The searching process for the “next cell” along the ray path is performed by using a local data structure associated with each cell. The goal of this structure is to link the cells together. An improvement, named “mailbox”, for all space tracing algorithms is detailed. Results are presented for two scenes to compare this new algorithm with Roth's algorithm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02153666
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Exploiting spatial coherence to accelerate radiosity (1993)
    Springer
    The visual computer 10 (1993), S. 46-53 
    Details
    ISSN: 1432-2315
    Keywords: Computer graphics ; Radiosity ; Coherence ; Form factors ; Ray tracing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract This paper shows how spatial coherence can be exploited to accelerate form-factor calculation for the radiosity method. A certain number of form factors are calculated by a new technique combining hemisphere and ray tracing, while the other form factors are estimated. This estimation method has reduced form-factor calculation by a factor greate than three, for some test scenes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01905530
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Static load balancing for a parallel ray tracing on a MIMD hypercube (1989)
    Springer
    The visual computer 5 (1989), S. 109-119 
    Details
    ISSN: 1432-2315
    Keywords: Parallel ray tracing ; Algorithm ; Static load balancing ; MIMD hypercube ; 3D regions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract A parallel ray tracing algorithm is presented. It subdivides the seene into 3D regions, the adjacency of which is modelled by a connectivity graph of regions. Since with each region is associated a ray tracing process, this graph becomes a graph of processes, the edges of which represent the communications between processes. This graph of processes is suitably mapped onto a hypercube topology so as to minimize the communication cost. Static load balancing is performed and solutions are brought to the problems of network congestion and termination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01901486
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Error-bound wavelength selection for spectral rendering (1998)
    Springer
    The visual computer 13 (1998), S. 424-434 
    Details
    ISSN: 1432-2315
    Keywords: Key words: Spectral rendering ; Global illumination ; Wavelength selection ; Radiosity ; Basis functions.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003710050115
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Nested radiosity for plant canopies (1998)
    Springer
    The visual computer 14 (1998), S. 109-125 
    Details
    ISSN: 1432-2315
    Keywords: Key words: Global illumination ; Radiosity ; Nested model ; Vegetation ; Validation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003710050127
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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