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EEciently identifying polygons that are visible from a dynamic synthetic viewpoint is an important problem in computer graphics. Typically, visibility determination is performed using the z-buuer algorithm. As this algorithm must examine every triangle in the input scene, z-buuering can consume a signiicant fraction of graphics processing, especially on… (More)

EEciently identifying polygons that are visible from a changing synthetic viewpoint is an important problem in computer graphics. Even with hardware support, simple algorithms like depth-buuering cannot achieve interactive frame rates when applied to geometric models with many polygons. However, a visibility algorithm that exploits the occlu-sion properties… (More)

- Satyan R Coorg, Becca, Eric A, Eric B Hans, Justin, Kavita +2 others
- 1998

Three-dimensional (3-D) modeling of urban environments has numerous applications, including virtual environments, urban planning, and physical simulation. Constructing 3-D models from photographs (images) is thus an important area of research in computer vision, and increasingly, computer graphics. However, despite many years of research, a system that… (More)

- Satyan Coorg
- 1998

Extracting 3-dimensional structure from real-world imagery and rendering it from unrestricted viewpoints is an important problem in computer vision, and increasingly, computer graphics. Despite many years of research, a system that automatically recovers realistic 3-D models from images remains elusive; most practical systems require signiicant human input.… (More)

- Seth J. Teller, Matthew E. Antone, Zachary Bodnar, Michael Bosse, Satyan R. Coorg, Manish Jethwa +1 other
- CVPR
- 2001

We describe a dataset of several thousand calibrated, time-stamped, geo-referenced, high dynamic range color images, acquired under uncontrolled, variable illumination conditions in an outdoor region spanning several hundred meters. The image data is grouped into several regions which have little mutual inter-visibility. For each group, the calibration data… (More)

We are developing a system to extract geodetic, tex-tured CAD models from thousands of initially uncontrolled , close-range ground and aerial images of urban scenes. Here we describe one component of the system , which operates after the imagery has been controlled or geo-referenced. This fully automatic component detects signiicant vertical facades in the… (More)

We describe the generation of a large pose-mosaic dataset: a collection of several thousand digital images , grouped by spatial position into spherical mosaics , each annotated with estimates of the acquiring camera's 6 DOF pose (3 DOF position and 3 DOF orientation) in an absolute coordinate system. The pose-mosaic dataset was generated by acquiring… (More)

We describe an algorithm for generating spherical mosaics from a collection of images acquired from a common optical center. The algorithm takes as input an arbitrary number of partially overlapping images, an adjacency map relating the images, initial estimates of the rotations relating each image to a specified base image, and approximate internal… (More)

Suppose G = (V, E) is a graph in which every vertex v E V is associated with a cost c(v). This paper studies the weighted independent perfect domination problem on G, i.e., the problem of finding a subset D of V such that every vertex in V is equal or adjacent to exactly one vertex in D and ~{c(v) : v E D} is minimum. We give an O(IVIIEI) algorithm for the… (More)