نتایج جستجو برای: fast axis plunge estimation

تعداد نتایج: 581004  

Fathollah Bouzarjomehri Mahdie Behjati Mohammad Amin Mosleh-Shirazi, Mostafa Sohrabpour Seyed Pezhman Shirmardi,

Introduction: Wedge filters are used in radiotherapy to modify photon beam and improve dose uniformity in the target volume. Determination of wedge dose distribution is important to improve treatment planning accuracy. The utilization of treatment planning software to obtain dose distribution is not always available. In this work an analytical model has been developed to calcu...

2011
Barbara Romanowicz Huaiyu Yuan

S U M M A R Y Concerns over the validity of expressions derived by Montagner et al. that link SKS splitting measurements to the variation with depth of anisotropic parameters in the upper mantle have been recently expressed, pointing out that the long period approximations applied by these authors may not be valid for the frequency range commonly used in SKS studies, and in particular, that the...

ژورنال: سنجش و ایمنی پرتو 2019

The images of dental CBCT imaging systems used in conic shaped beams, stored in the DICOM format, have various applications in the dentistry, including bone density estimation to select the location of the orthodontic implant, bone loss detection and etc. In these systems, unlike CT imaging systems, the resulting images exhibit gray-scale non-uniformity in each of the different axis in FOV. Thi...

2009
Yiming Nie Tao Wu Hangen He

Fast depth estimation from binocular vision is often desired for autonomous vehicles, but, most algorithms could not easily be put into practice because of the much time cost. We present an image-processing technique that can fast estimate depth image from binocular vision images. By finding out the lines which present the best matched area in the disparity space image, the depth can be estimat...

2003
Yun-Gu Lee Jae Hun Lee Jong Beom Ra

As many fast integer-pixel motion estimation algorithms have become available, an integer-pixel motion vector can be found by examining less than 10 search points. Meanwhile, 8 half-pixel positions around the integer-pixel motion vector are to be examined for half-pixel motion estimation. Hence, it becomes more meaningful to reduce the computational complexity of half-pixel motion estimation. I...

Journal: : 2021

In this paper, a sensorless permanent magnet synchronous motor (PMSM) drive was presented based on calculating the back EMF using reference stator voltages, which are output of d-axis current controller, includes information about rotor position. Sensorless control estimates position necessary for vector without sensor or encoder. This can provide effects such as increased system reliability an...

2008
Sunil L. Kukreja

Representation and identification of a nonlinear aeroelastic pitch-plunge system as a model of the Nonlinear AutoRegressive, Moving Average eXogenous (NARMAX) class is considered. A nonlinear difference equation describing this aircraft model is derived theoretically and shown to be of the NARMAX form. Identification methods for NARMAX models are applied to aeroelastic dynamics and its properti...

Journal: :College & Research Libraries News 1994

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