This article presents a damage detection method for prestressed reinforced concrete (PRC) elements based on free vibration tests and nonlinear damping identification. Integrated static and dynamic experiments were carried out on three precast PRC beam specimens. The static loading induced different levels of damage to the beams. At each damage level, impulsive loading was applied to the beams a...

One of the important functions of an Intelligent Transportation System (ITS) is to classify vehicle types using a vision system. We propose a method using machine-learning algorithms for this classification problem with 3-D object model fitting. It is also necessary to detect road lanes from a fixed traffic surveillance camera in preparation for model fitting. We apply a background mask and lin...

We present minimum chi-squared fits of power law and Hernquist density profiles to F-turnoff stars in eight 2.5◦ wide stripes of SDSS data: five in the North Galactic Cap and three in the South Galactic cap. Portions of the stellar Galactic halo that are known to contain large streams of tidal debris or other lumpy structure, or that may include significant contamination from the thick disk, ar...

We describe a method based on the Hough transform to compute a set of parameters that completely describe line segments. By complete, we mean the description includes the endpoints of each segment as well as the number of points along the segment, and, assuming a noise model N, the parameter(s) of N. The method involves fitting a surface locally to the Hough array, where the variables of the fi...

This paper describes the development of a Plane Segment Finder, which is able to detect threedimensional planar surfaces from input images in real-time. We propose an algorithm for detecting plane segments, that includes 1) Plane segment candidate extraction using 3D Hough Transformation from depth map information, 2) Fitting the plane segment candidates to the depth map in order to detect the ...

Given a virtual garment model on a reference human model, we propose an automated 3D garment fitting system that fits the garment model to a target human model. The proposed method can transfer garment models between human models without any user guidance even when the reference and target human models have different poses. Our goal is not to resize or deform the original garment model accordin...

This paper proposes a novel algorithm called the sparse Hough transform, which is shown to have better performances than the standard Hough transform for sparse input data collected from a laser on a mobile robot. In the context of laser sensing and perception for autonomous ground robots, this paper studies performances of the sparse Hough transform and compares it with other segmentation and ...

In this paper we study the effect that jitter and phase noise have on the precision of amplitude estimation of the harmonics of a periodic signal. The analysis carried out is applicable to both Three-Parameter Sine Fitting as well as Coherent Discrete Fourier Transform procedures. We consider the case where jitter and phase noise on the signal or sampling clock is small when compared with the s...

Standard Mobius transform evaluation formula for the Choquet integral is associated with the min-aggregation. However, several other aggregation operators replacing min operator can be applied, which leads to a new construction method for aggregation operators. All binary operators applicable in this approach are characterized by the 1-Lipschitz property. Among ternary aggregation operators all...