NDLI: A rendering framework for multiscale views of 3D models

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A rendering framework for multiscale views of 3D models

Content Provider	ACM Digital Library
Author	Hsu, Wei-Hsien Correa, Carlos Ma, Kwan-Liu
Abstract	Images that seamlessly combine views at different levels of detail are appealing. However, creating such multiscale images is not a trivial task, and most such illustrations are handcrafted by skilled artists. This paper presents a framework for direct multiscale rendering of geometric and volumetric models. The basis of our approach is a set of non-linearly bent camera rays that smoothly cast through multiple scales. We show that by properly setting up a sequence of conventional pinhole cameras to capture features of interest at different scales, along with image masks specifying the regions of interest for each scale on the projection plane, our rendering framework can generate non-linear sampling rays that smoothly project objects in a scene at multiple levels of detail onto a single image. We address two important issues with non-linear camera projection. First, our streamline-based ray generation algorithm avoids undesired camera ray intersections, which often result in unexpected images. Second, in order to maintain camera ray coherence and preserve aesthetic quality, we create an interpolated 3D field that defines the contribution of each pinhole camera for determining ray orientations. The resulting multiscale camera has three main applications: (1) presenting hierarchical structure in a compact and continuous manner, (2) achieving focus+context visualization, and (3) creating fascinating and artistic images.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF
ISBN	9781450308076
DOI	10.1145/2024156.2024165
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2011-12-12
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Visualization Camera model Levels of detail Multiscale views
Content Type	Text
Resource Type	Article

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