In November 2004 an innovative undergraduate computer Engineering technologyprogram based on TAC of ABET program assessment criteria was granted licensure by the State Department of Higher Education. The University h...
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We present a clean algorithm for determining whether a ray intersects a triangle. The algorithm translates the origin of the ray and then changes the base of that vector which yields a vector (t u v)T, where t is the ...
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ISBN:
(纸本)9781450378338
We present a clean algorithm for determining whether a ray intersects a triangle. The algorithm translates the origin of the ray and then changes the base of that vector which yields a vector (t u v)T, where t is the distance to the plane in which the triangle lies and (u, v) represents the coordinates inside the triangle. One advantage of this method is that the plane equation need not be computed on the fly nor be stored, which can amount to significant memory savings for triangle meshes. As we found our method to be comparable in speed to previous methods, we believe it is the fastest ray/triangle intersection routine for triangles which do not have precomputed plane equations.
Within the large spectrum of possible VR application areas, automotive applications were among the first to appear, and are among the most demanding. technology has not been sufficiently sophisticated for many tasks. ...
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Within the large spectrum of possible VR application areas, automotive applications were among the first to appear, and are among the most demanding. technology has not been sufficiently sophisticated for many tasks. The troubling thought is that we are happy to push the technology envelope, but don't really know how useful this technology is, or can be. Could I do my job even if I had a real-time, ortho-stereoscopic, head-tracked, multi-viewer, wide-field-of-view, high-dynamic-range display with eye-limiting acuity?
This work introduces a methodology for evaluating the operational range of a video surveillance system in terms of robustness and reliability. We propose the generation of semi and full-synthetic video sequences under...
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This work introduces a methodology for evaluating the operational range of a video surveillance system in terms of robustness and reliability. We propose the generation of semi and full-synthetic video sequences under controlled variation of selected parameters. This data provides the necessary ground truth information for evaluating the motion detection and tracking systems. In addition, we propose several error metrics for quantitative evaluation.
Fingerprint matching is a common technique for biometric authentication. Solid state sensors allow the use of fingerprint recognition in small sized embedded systems. The size of these sensors makes it necessary to st...
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Fingerprint matching is a common technique for biometric authentication. Solid state sensors allow the use of fingerprint recognition in small sized embedded systems. The size of these sensors makes it necessary to store several impressions of the same finger to provide good coverage of the entire fingertip. In order to reduce memory requirements and matching time all these impressions can be fused into a single larger image. Memory constraints imposed by embedded computers prohibit the use of images. A fingerprint is therefore represented as a set of minutiae coordinates and minutiae angles. We present a two stage approach to combine two fingerprints. First, a RANSAC based method is used to determine a rigid transformation which roughly aligns the two fingerprints. Second, the transformation is optimised using a robust least median of squares solution. The reliability of the method is demonstrated on a large synthetic dataset and real fingerprint images. The computational complexity and memory requirements allow implementation of the algorithm on embedded hardware.
Engineering and technology schools, departments and students are encouraged to explore a capstone design project option that possesses significant, far-reaching implications for international humanitarian application....
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Engineering and technology schools, departments and students are encouraged to explore a capstone design project option that possesses significant, far-reaching implications for international humanitarian application. An Indianapolis, Indiana-based non-profit organization called the "Institute of Affordable Transportation (IAT)" engages young engineering and technology talent through service-based capstone projects to design and develop a class of transportation known as a Basic Utility Vehicle (BUY). The IAT's mission is to improve living standards and enable economic growth in the Third World by creating a simple vehicte that can be assembled almost anywhere, by almost anyone. To propagate this initiative, the IAT hosts an annual collegiate BUY competition that tests student-designed prototype BUV's. Ultimately, the student efforts from these competitions will help provide mobility, freedom and economic hope to people in rural areas of devebping countries. This paper introduces the organization that is the genesis of this initiative, gives an overview of the first two IAT collegiate competitions (including examples of student-designed and other vehicles), reflects on the academic benefits to participating students and faculty and culminates with an invitation to academic institutions to become involved in this life-changing initiative.
Many manufacturing firms in today's economy are reluctant to engage their design personnel in costly, difficult to operate 3D CAD packages. While the attributes of designing in 3D are numerous and beneficial, comm...
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ISBN:
(纸本)0941783235
Many manufacturing firms in today's economy are reluctant to engage their design personnel in costly, difficult to operate 3D CAD packages. While the attributes of designing in 3D are numerous and beneficial, committing to a high-end design software package often seems unjustifiable, especially when only a few new designs are required. An extremely attractive alternative to this dilemma is the integration of a powerful and innovative 3D modeling software called Rhinoceros®, or Rhino® for short. While costing substantially less than most 3D modeling programs, Rhino supplies an impressive array of advanced capabilities not found on many of the most powerful design software's on the market. Though not considered a parametric or feature-based modeler, Rhino often supplements these costly packages to accomplish complex surfacing challenges. This paper introduces this incredible program as it applies to the motor manufacturing industry and highlights the ease-of-use and incredible power of this modeling and presentation software. Additionally, an overview of different types of 3D modeling software is given in contextual reference to where this product may fit into a firm's design initiatives.
This paper presents an approach for grasping virtual objects in virtual environments with a data glove. Our focus lies on developing new methods that allow sensible realistic grasping gestures which correspond to huma...
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This paper presents an approach for grasping virtual objects in virtual environments with a data glove. Our focus lies on developing new methods that allow sensible realistic grasping gestures which correspond to human grasping behavior. To meet the demands of industrial applications, users must be able to grasp an object in an intuitive way with one or two hands and, beyond that, manipulate grasped objects between their fingers. To avoid the use of expensive force or touch feedback hardware, but also to ensure a safe grip on virtual objects, several forms of visual feedback are provided. First, we describe the basic algorithm for grasping with one or two hands and finally, we present a method to precisely manipulate the grasped objects between the virtual fingers.
In this paper, we discuss the use of computergraphics techniques to model and explain the structures commonly observed in color histograms of images. This includes an accurate simulation of the physical reflection an...
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In this paper, we discuss the use of computergraphics techniques to model and explain the structures commonly observed in color histograms of images. This includes an accurate simulation of the physical reflection and transport behavior of light energy within 3D environments, the precise modeling of an image capturing system, and an interactive visualization module to display color histograms. Based on the fundamental rendering equation that describes light reflection and transport in the 3D world, we classify the color histogram structures of color images, and relate them to various physical components in image formation, including scene illumination, material reflectance properties, and the surface geometry of objects. We further show how these histogram structures can be effected by the artifacts caused by the limitation of image capturing systems. Our results demonstrate that the use of accurate simulation procedures under a precisely controlled computer graphic environment can clearly illustrate the causes of the structures observed, and can provide unique insights and explanations of image formation.
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