We present a technique to extend any distortion (quality) measure for planar meshes to meshes on parameterized surfaces. The resulting distortion (quality) measure is expressed in terms of the parametric coordinates of the nodes. This extended distortion (quality) measure can be used to check the quality and validity of a surface mesh. We also apply it to simultaneously smooth and untangle surf...

Distorted voltage and current waveforms is one of the problems associated to electric power quality. Continuous use of non-linear loads provokes the existence of voltage waveforms with a high distortion. Thus, it is necessary to know the responsible of this problem by means of the commonly named distortion sources identification. In this paper, the problem is analyzed through the harmonic power...

Although mammalian otoacoustic emissions (OAEs) have generally been regarded as originating through nonlinear electromechanical distortion, measurements of OAE phase made using frequency-scaled stimuli (e.g., a pure tone or a pair of tones with fixed frequency ratio f2/f1) are now understood as providing clear evidence for two fundamentally different types of emission [11,6]: distortion-source ...

Abstract Good mesh moving methods are always part of what makes moving-mesh good in computation flow problems with boundaries and interfaces, including fluid–structure interaction. Moving-mesh methods, such as the space–time (ST) arbitrary Lagrangian–Eulerian (ALE) enable mesh-resolution control near solid surfaces thus high-resolution representation boundary layers. Mesh based on linear elasti...

The effects of using an multicarrier amplifier (MCPA) in the transmit chain of a cellular FDMA system utilizing switched multibeam base-station antennas is investigated. By combining several carriers prior to amplification, the signal envelope will be time varying and the MCPA will introduce non-linear distortion of the amplified waveforms. It is shown how the main beam direction and frequency ...

The fullerene anion, C60 , within the Ih point group, is a spherical molecule subject to the T h Jahn–Teller (JT) distortion. The descent in symmetry goes to the three epikernel subgroups, namely D5d, D3d, and D2h. The last one completely removes the electronic degeneracy, whereas D5d and D3d structures are subject to further JT distortion, leading to C2h minimum energy structure. The multidete...

During wireless video transmission, channel conditions can vary drastically. When the fails to support transmission bit rate, quality degrades sharply. A pseudo-analog system such as SoftCast relies on linear operations achieve a transition over wide range of conditions. transmitting 3D videos SoftCast, following issues arise: (1) assigning power texture and depth maps obtain optimal overall (2...

Robustness to noise and low-bit rate coding distortion is one of the main problems faced by automatic speech recognition (ASR) and speaker verification (SV) systems in real applications. Usually, ASR and SV models are trained with speech signals recorded in conditions that are different from testing environments. This mismatch between training and testing can lead to unacceptable error rates. N...

OF THESIS Per-Pixel Calibration for RGB-Depth Natural 3D Reconstruction on GPU Ever since the Kinect brought low-cost depth cameras into consumer market, great interest has been invigorated into Red-Green-Blue-Depth (RGBD) sensors. Without calibration, a RGBD camera’s horizontal and vertical field of view (FoV) could help generate 3D reconstruction in camera space naturally on graphics processi...