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Full-Text Articles in Engineering
Facial Features Localization In Front View Head And Shoulders Images, Adnan M. Alattar, Sarah A. Rajala
Facial Features Localization In Front View Head And Shoulders Images, Adnan M. Alattar, Sarah A. Rajala
Sarah A. Rajala
The computerized process of locating human facial features such as the eyes, nose and mouth in a head and shoulders image is crucial to such applications as automatic face identification and model-based video coding. A new model-based algorithm for locating these major features is developed. The algorithm estimates the parameters of the ellipse which best fits the head view in the image and uses these parameters to calculate the estimated locations of the facial features. It then refines the estimated coordinates of the eyes, mouth, and nose by exploiting the vertical and horizontal projections of the pixels in windows around …
Error Analysis For The Numerical Evaluation Of The Diagonal Forms Of The Scalar Spherical Addition Theorem, S. Koc, Jiming Song, W. C. Chew
Error Analysis For The Numerical Evaluation Of The Diagonal Forms Of The Scalar Spherical Addition Theorem, S. Koc, Jiming Song, W. C. Chew
Jiming Song
The numerical solution of wave scattering from large objects or from a large cluster of scatterers requires excessive computational resources and it becomes necessary to use approximate -but fast - methods such as the fast multipole method; however, since these methods are only approximate, it is important to have an estimate for the error introduced in such calculations. An analysis of the error for the fast multipole method is presented and estimates for truncation and numerical integration errors are obtained. The error caused by polynomial interpolation in a multilevel fast multipole algorithm is also analyzed. The total error introduced in …
Conductivity Of A Periodic Particle Composite With Spheroidal Inclusions, Nicola Harfield
Conductivity Of A Periodic Particle Composite With Spheroidal Inclusions, Nicola Harfield
Nicola Bowler
The effective electrical conductivity of a two-phase material consisting of a lattice of identical spheroidal inclusions in a continuous matrix is determined analytically. The inclusions are located at the node points of a simple-cubic lattice and the axis of rotation of each spheroid coincides with one of the lattice vectors, such that the spheroids are aligned with each other and with the lattice. With an electric field applied in the direction of the rotation axes of the spheroids, the electric potential is found by solving Laplace's equation. The solution is found by analytically continuing the interstitial field into the particle …