Concomitant Hierarchy Construction and Rendering of Large Point Clouds

  • Vinícius Silva IMPA
  • Ricardo Guerra Marroquim UFRJ
  • Claudio Esperança UFRJ

Resumo


Rendering large point clouds ordinarily requires building a hierarchical data structure for accessing the points that best represent the object for a given viewing frustum and level-of-detail. The building of such data structures frequently represents a large portion of the cost of the rendering pipeline both in terms of time and space complexity, especially when rendering is done for inspection purposes only. In this work we present OMiCroN -- Oblique Multipass Hierarchy Creation while Navigating -- which is the first algorithm capable of immediately displaying partial renders of the geometry, provided the cloud is made available sorted in Morton order. In fact, a pipeline coupling OMiCroN with an incremental sorting algorithm running in parallel can start rendering as soon as the first sorted prefix is produced, making this setup very convenient for streamed viewing.

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Publicado
28/10/2019
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SILVA, Vinícius; MARROQUIM, Ricardo Guerra; ESPERANÇA, Claudio. Concomitant Hierarchy Construction and Rendering of Large Point Clouds. In: WORKSHOP DE TESES E DISSERTAÇÕES - CONFERENCE ON GRAPHICS, PATTERNS AND IMAGES (SIBGRAPI), 32. , 2019, Rio de Janeiro. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2019 . p. 70-76. DOI: https://doi.org/10.5753/sibgrapi.est.2019.8304.