نتایج جستجو برای: shape error

تعداد نتایج: 437720  

Journal: :Remote Sensing 2016
Yiwen Mei Efthymios I. Nikolopoulos Emmanouil N. Anagnostou Davide Zoccatelli Marco Borga

The error in satellite precipitation-driven complex terrain flood simulations is characterized in this study for eight different global satellite products and 128 flood events over the Eastern Italian Alps. The flood events are grouped according to two flood types: rain floods and flash floods. The satellite precipitation products and runoff simulations are evaluated based on systematic and ran...

This research was conducted to find a reliable technique to shape an abrupt contraction for minimizing the energy loss. The method may find broader applications in design of variety of transitional cross-sections in hydraulic structures. The streamlines in a 2-D contraction were calculated through solving the potential flow equations in rectangular and curvilinear coordinates. The natural cubic...

2017
Huiping Guo Fuzeng Yang

To mine users’ perceptual demand for product shape, it is very important to build the relational model between design elements of product shape and users’ Kansei evaluation. We apply Kansei engineering to the shape design of wheeled tractor. The design elements obtained by morphological analysis constitute the input layer, and perceptual semantic evaluation obtained by semantic differential met...

2003
Geovanni Martinez

An algorithm for estimating the three-dimensional motion of a human face from a monocular image sequence is investigated. For motion estimation, the shape of a human face is described by a three-dimensional rigid triangular mesh and its motion by six parameters: one three-dimensional translation vector and three rotation angles. The motion parameters are estimated by maximizing the conditional ...

2006

Parameterized Appearance Models (PAMs) (e.g. Eigentracking [2], active shape models [6], active appearance models [5, 12], morphable models [3, 11]) are commonly used to model the appearance and shape variation of objects in images. While PAMs have numerous advantages relative to alternative approaches, they have at least two drawbacks. First, they are especially prone to local minima in fittin...

2008
Neil J. Calkin M. J. de Resmini

The geometric codes are the orthogonals of the codes defined by the designs associated with finite geometries. The latter are generalized Reed-Muller codes, but the geometric codes are, in general, not. We obtain values for the minimum weight of these codes in the binary case, using geometric constructions in the associated geometries, and the BCH bound from coding theory. Using Hamada’s formul...

Journal: :IEICE Transactions 2006
Jiahui Wang Hideo Saito Makoto Kimura Masaaki Mochimaru Takeo Kanade

Recently, researches and developments for measuring and modeling of the human body have been receiving much attention. Our aim is to reconstruct an accurate shape of a human foot from multiple camera images, which can capture dynamic behavior of the object. In this paper, a foot-shape database is used for accurate reconstruction of human foot. By using Principal Component Analysis, the foot sha...

Journal: :Image Vision Comput. 2004
Tao Xiang Loong Fah Cheong

Given that most current Structure From Motion (SFM) algorithms cannot recover true motion estimates, it is important to understand the impact such motion errors have on the shape reconstruction. In this paper, various robustness issues surrounding different types of quadratic shape estimates recovered from motion cue are addressed. We present a theoretical model to understand the impact that er...

Journal: :Pattern Recognition 2012
Dirk Smeets Jeroen Hermans Dirk Vandermeulen Paul Suetens

Intra-shape deformations complicate 3D shape recognition and therefore need proper modeling. Thereto, an isometric deformation model is used in this paper. The method proposed does not need explicit point correspondences for the comparison of 3D shapes. The geodesic distance matrix is used as an isometry-invariant shape representation. Two approaches are described to arrive at a sampling order ...

S. M. Saghaeian Nezhad and G. R. Arab, V. Tahani,

Because of extreme local saturation at pole tips of excited phase and uncircular shape of rotor and stator, a Swithed Reluctance Motor (SRM) does not have a simple and accurate mathematical model. Therefore, the output control of this motor requires a robust controller which is not based on an accurate model of the process. Fuzzy controllers, to some extent, will satisfy these requirements. Tet...

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