Results 11  20
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622
Illuminated lines revisited
 In IEEE Visualization 2005 Conference Proceedings (2005
"... For the rendering of vector and tensor fields, several texturebased volumetric rendering methods were presented in recent years. While they have indisputable merits, the classical vertexbased rendering of integral curves has the advantage of better zooming capabilities as it is not bound to a fixed ..."
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Cited by 12 (0 self)
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fixed resolution. It has been shown that lighting can improve spatial perception of lines significantly, especially if lines appear in bundles. Although OpenGL does not directly support lighting of lines, fast rendering of illuminated lines can be achieved by using basic texture mapping. This existing
Energyaware stage illumination
 In Proceedings of the 21st Annual ACM Symposium on Computational Geometry, (SOCG05
, 2005
"... Consider the following illumination problem: given a stage represented by a line segment L and a set of lightsources represented by a set of points S in the plane, assign powers to the lightsources such that every point on the stage receives a sufficient amount – let’s say one unit – of light while ..."
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Cited by 4 (0 self)
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minimizing the overall power consumption. By assuming that the amount of light arriving from a fixed lightsource decreases rapidly with the distance from the lightsource, this becomes an interesting optimization problem. We propose to reconsider the classical illumination problems as known from computational
Variations of Good Illumination
"... A point p is 1well illuminated by a set F of n point lights if there is, at least, one light source interior to each half plane with p on its border (also known as △guarding or wellcovering). We present two generalizations of 1good illumination: the orthogonal good illumination and the good Θil ..."
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in the plane is well Θilluminated if there is, at least, one light source interior to each cone emanating from p of angle Θ. Given a fixed angle Θ ≤ π, we present an algorithm to minimize the light sources ’ illumination range to well Θilluminate a point p. The algorithm runs in linear time which is optimal
low angles of illumination
"... This paper describes research on forward and backward light reflection of road surfaces for typical vehiclerelated illumination and observation conditions. The aim is to improve luminance simulation in order to include quality criteria of headlamp light distributions that correspond to visual perce ..."
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This paper describes research on forward and backward light reflection of road surfaces for typical vehiclerelated illumination and observation conditions. The aim is to improve luminance simulation in order to include quality criteria of headlamp light distributions that correspond to visual
Illuminating Objects with Mirrors
, 1998
"... Advanced computer graphics techniques such as ray tracing... In this paper, we provide algorithms and geometries providing optimal mirror placements for two natural classes of problems; objectindependent and objectdependent mirror placement. In the objectindependent formulation, we seek to design ..."
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to design a "camera" with a fixed geometry of mirrors and viewpoint which satisfies certain criteria for all objects in a specific class. The objectindependent formulation is wellsuited to visualizing scientific data sets, since extensive analysis prior to an initial rendering may be expensive
Chapter 4 Signals and Illumination
"... The MUTCD, Section IV, discusses the types of signals and their application, and provides warrants and other guidelines used to justify signal installations. 4.2 Design Manual Design Manual Section 335 provides the guidelines for signal installations with regard to state laws, department policies, p ..."
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having fixed time signals, flashing operations may be considered for nonpeak hours where there is significantly larger traffic volumes on the major approaches than the minor approaches (i.e., intersections meeting primarily warrant No. 2). If offpeak flashing operations are implemented, follow
Implicit, Nonparametric Shape Reconstruction from Unorganized Points Using A Variational Level Set Method
 Computer Vision and Image Understanding
, 1998
"... In this paper we consider a fundamental visualization problem which arises in computer vision, computer graphics and numerical simulation. The problem is to find a curve in two dimensions, or a surface in three dimensions which can be regarded as the shape represented by a set of unorganized points, ..."
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Cited by 158 (23 self)
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nonparametric representation of the curve or surface on a fixed rectangular grid. With this representation of surfaces we can easily (a) find the closest point and distance from any point to the surface (useful in illumination and many other applications), (b) find the intersection curve of two surfaces which
Illumination normalization with timedependent intrinsic images for video surveillance
 In Proc. of IEEE Int’l Conf. on Computer Vision and Pattern Recognition, 2004
, 2003
"... Cast shadows produce troublesome effects for video surveillance systems, typically for object tracking from a fixed viewpoint, since it yields appearance variations of objects depending on whether they are inside or outside the shadow. To robustly eliminate these shadows from image sequences as a pr ..."
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Cited by 52 (3 self)
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Cast shadows produce troublesome effects for video surveillance systems, typically for object tracking from a fixed viewpoint, since it yields appearance variations of objects depending on whether they are inside or outside the shadow. To robustly eliminate these shadows from image sequences as a
Shape and motion under varying illumination: Unifying structure from motion, photometric stereo, and multiview stereo
 In Proc. of IEEE Conf. on Computer Vision and Pattern Recognition
, 2003
"... This paper presents an algorithm for computing optical flow, shape, motion, lighting, and albedo from an image sequence of a rigidlymoving Lambertian object under distant illumination. The problem is formulated in a manner that subsumes structure from motion, multiview stereo, and photometric ster ..."
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Cited by 68 (3 self)
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estimating affine camera parameters, illumination, shape, and albedo in an alternating fashion. Results are demonstrated on videos of handheld objects moving in front of a fixed light and camera. 1.
Progressivelyrefined reflectance functions from natural illumination
 in Eurographics Symposium on Rendering
, 2004
"... In this paper we present a simple, robust and efficient algorithm for estimating reflectance fields (i.e., a description of teh transport of light through a scene) for a fixed viewpoint using images of the scene under known natural illumination. Our algorithm treats the scene as a blackbox linear s ..."
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Cited by 25 (4 self)
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In this paper we present a simple, robust and efficient algorithm for estimating reflectance fields (i.e., a description of teh transport of light through a scene) for a fixed viewpoint using images of the scene under known natural illumination. Our algorithm treats the scene as a blackbox linear
Results 11  20
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622