280 Result(s)
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English
Computer Science
Artificial Intelligence
Image Processing and Computer Vision
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Signal matching through scale space
Given a collection of similar signals that have been deformed with respect to each other, the general signal-matching problem is to recover the deformation. We formulate the problem as the minimization of an e...
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Lens effect on synthetic image generation based on light particle theory
The synthetic image generation with the lens effect consists of two consecutive processors: the hidden-surface processor, and the focus processor. The normal ray-tracing algorithms are used in the first proces...
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Sampling point setting on cubic splines for computer animation
Locating sampling points for cubic splines is investigated in this paper. The direct application of the proposal is for locating objects for computer animation. The method consists of two parts: (i) obtaining ...
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Interpretation of conic motion and its applications
The indeterminacy of conic motion is analyzed in terms of Lie group theory. It is shown that an image motion of a conic is associated with a group ofinvisible motions that do not cause a visible change of the con...
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An efficient hierarchicaltraversal algorithm for ray tracing
Ray tracing has been shown to be an excellent technique for rendering realistic images. However, it is important to reduce the lengthy computation time resulting from the brute-force nature of the original ray...
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Reconstruction of tokamak density profiles using feedforward networks
The tokamak is currently the principal magnetic confinement system for controlled fusion research. In seeking to understand the physics of the high temperature plasma inside the tokamak, it is important to hav.....
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Neuro-genetic adaptive attitude control
It has previously been demonstrated that for smooth dynamic systems, using relatively few sample points from a single trajectory, a neural network can be trained to perform very accurate short-term prediction .....
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Ray-cast volume rendering accelerated by incremental trilinear interpolation and cell templates
Two related ideas for improving the speed of ray-cast volume rendering are studied in this paper. The first is an incremental algorithm for trilinear interpolation, a method commonly used in ray-cast volume re...
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Residue systolic implementations for neural networks
In this work we propose two techniques for improving VLSI implementations for artificial neural networks (ANNs). By making use of two kinds of processing elements (PEs), one dedicated to the basic operations (.....
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Computing spanning line segments in three dimensions
A set of spanning line segments ℊ in a polyhedronP preserves the property of intersection; that is, a plane intersectsP if and only if it also intersects ℊ. This paper gives a linear time algorithm for constructi...
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An efficient volume- rendering algorithm with an analytic approach
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Short term electric load forecasting using a neural network with fuzzy hidden neurons
Short term electric load forecasting with a neural network based on fuzzy rules is presented. In this network, fuzzy membership functions are represented using combinations of two sigmoid functions. A new sche.....
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Improved quadratic normal vector interpolation for realistic shading
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Biologically Inspired Visual Motion Detection in VLSI
Visual motion detection is a fundament component of vision, and plays a vital role in scene analysis and understanding for behaving organisms. In computer vision, motion detection requires considerable resourc...
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The synthesis of rust in seawater
Computer graphics researchers have recently revealed that the presence of imperfections is an essential part of the illusion of photorealism. An improved model to simulate the rust development of ferrous metal...
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Applications of neural networks for grading textile yarns
The grade of textile yarns is an important index in evaluating the yarn’s market value. This paper uses the backpropagation neural network (BNN) and Karhunen-Loeve (K-L) expansion method to construct a new and...
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Feature- and region-based auto painting for 2D animation
This paper presents a novel approach to automating the entire coloring process in traditional cel animation production. A feature-based region-matching algorithm is proposed. It first matches a set of master f...
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An efficient and low-error mesh simplification method based on torsion detection
To preserve the major characteristics of the simplified model, this study proposes the use of torsion detection to improve the quadric error metric of vertex-pair contraction, and retain the physical features ...
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Comparison of TSCS regression and neural network models for panel data forecasting: debt policy
Empirical studies of variations in debt ratios across firms have analyzed important determinants of capital structure using statistical models. Researchers, however, rarely employ nonlinear models to examine t...
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Diagnosis of breast tumors with ultrasonic texture analysis using support vector machines
This study presents a computer-aided diagnosis (CAD) system with textural features for classifying benign and malignant breast tumors on medical ultrasound systems. A series of pathologically proven breast tum...
