Fast volume render techniques for interactive analysis

Abstract

General rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Without graphics hardware, interactive volume rendering is almost impossible with the current generation of computers and software. We describe the implementation of a volume renderer for interactive analysis of confocal images. We propose several techniques to accelerate the rendering of grey-value volumes. We propose to illuminate the volume selectively with ray templates to get a proper shadow cue in the shortest feasible time. In the viewing phase, rendering is distinctively accelerated for four user interactions: (1) a total change by successive adaptive refinement, (2) an unknown change in the view with this refinement strategy combined with suspended interpolation, (3) a known change in the view by recalculating only that part and (4) a view translation by recalculating the uncovered part.

Human corneal limbal epithelial cell response to varying silk film geometric topography in vitro

“…Specifically, it was observed that vinculin was primarily localizing at the feature edge as formed by the vertical side-wall and horizontal apical surface of the silk substrates. The localization of vinculin to the feature edge was further investigated through the use of 3-dimensional (3D) surface rendering software, which creates a digital rendering of the original fluorescent signature [31]. After 3 days in culture, HCLE cells grown on patterned silk film surfaces appeared to have vinculin localized to the feature edge (Figure 5A).…”

Localization of implanted EEG electrodes in a virtual-reality environment

“…11 To enable the interactive exploration and analysis of the volume data, the renderer uses optimization schemes like adaptive ray termination, template-based viewing, adaptive progressive refinement, presence sampling, blur prevention, local volume update, and view movement. 12,13 The result is a first rendering within a second and a final volumetric display in 10 s. As the user can change visual and object parameters after each update, the response is intuitive and interactive. Note that we use volume rendering and do not display 3D graphics extracted from the volume, as with the VTK library, for example.…”