نتایج جستجو برای: spectral pattern features

تعداد نتایج: 990607  

1996
SOPHIA ROBERTS

Remote imaging at high spatial resolution has a number of environmental, industrial, and military applications. Analysis of high-resolution multi-spectral images usually involves either spectral analysis of single pixels in a multi-or hyper-spectral image or spatial analysis of multi-pixels in a panchromatic or monochromatic image. Although insuucient for some pattern recognition applications i...

2004
Yaochun Shen Philip F. Taday Michael C. Kemp

The terahertz spectrum of the explosive RDX has been measured using a conventional Fourier transform infrared spectroscopy and by terahertz pulse spectroscopy in transmission and reflection modes. Seven absorption features in the spectral range 5–120 cm have been observed and identified as the fingerprints of RDX explosive. Furthermore, a sample consisting of RDX-based explosive, mounted side b...

Journal: :EURASIP Journal on Advances in Signal Processing 2011

Journal: :journal of artificial intelligence in electrical engineering 2016
maryam moghaddam saeed meshgini

automatic facial recognition has many potential applications in different areas of humancomputer interaction. however, they are not yet fully realized due to the lack of an effectivefacial feature descriptor. in this paper, we present a new appearance based feature descriptor,the local directional pattern (ldp), to represent facial geometry and analyze its performance inrecognition. an ldp feat...

2003
Victor Giurgiutiu

The detection of structural damage from the high-frequency local impedance spectra is addressed with a spectral classification approach consisting of features extraction followed by probabilistic neural network pattern recognition. The paper starts with a review of the neural network principles, followed by a presentation of the state of the art in the use of pattern recognition methods for dam...

Journal: :journal of sciences, islamic republic of iran 2011
h ranjbar

the northwestern part of the kerman cenozoic magmatic arc (kcma) contains many areas with porphyry copper mineralization. in this research, we used the advanced space-borne thermal emission and reflection radiometer (aster) and enhanced thematic mapper plus (etm+) images of this region to map the distribution of hydrothermally altered rocks, based on their mineral assemblages. the spectral meas...

Journal: :hepatitis monthly 0
fu-shun pan department of medical ultrasonic, the first affiliated hospital, institute of diagnostic and interventional ultrasound, sun yat-sen university, guangzhou, china ming xu department of medical ultrasonic, the first affiliated hospital, institute of diagnostic and interventional ultrasound, sun yat-sen university, guangzhou, china wei wang department of medical ultrasonic, the first affiliated hospital, institute of diagnostic and interventional ultrasound, sun yat-sen university, guangzhou, china lu-yao zhou department of medical ultrasonic, the first affiliated hospital, institute of diagnostic and interventional ultrasound, sun yat-sen university, guangzhou, china xiao-yan xie department of medical ultrasonic, the first affiliated hospital, institute of diagnostic and interventional ultrasound, sun yat-sen university, guangzhou, china; department of medical ultrasonic, the first affiliated hospital, institute of diagnostic and interventional ultrasound, sun yat-sen university, 58 zhong shan road 2, guangzhou 510080, china. tel: +86-2087765183, fax: +86-2087765183

conclusions the clinical features are effective indicators for distinguishing ihh from hbl, and the spectral doppler may be a useful adjunct parameter for differential diagnosis. objectives to study the clinical manifestations and the ultrasound features of the pediatric patients for distinguishing ihh from hbl. patients and methods between 2002 and 2012, thirteen children with ihh and 38 child...

A Farhadi F Rahimi F Shirazi K Abdi N Vakili

Based on the accumulated data, FTIR spectroscopy seems to be a highly sensitive tool in cervical cancer diagnosis. We, therefore, employed this technique in a screening type of research here in Tehran. The purpose of this study was to look for the spectral pattern differences between normal and malignant cervix samples in Iranian women. Through formal and informal announcements, all gynecology ...

Journal: :basic and clinical neuroscience 0
seyed navid resalat organization valiallah saba radiation research center, faculty of paramedicine, aja university of medical sciences, tehran, iran.

introduction: brain computer interface (bci) systems based on movement imagination (mi) are widely used in recent decades. separate feature extraction methods are employed in the mi data sets and classified in virtual reality (vr) environments for real-time applications. methods: this study applied wide variety of features on the recorded data using linear discriminant analysis (lda) classifier...

Journal: :Pattern Recognition 2003
Philip L. Worthington Edwin R. Hancock

This paper investigates the use of shape-from-shading for coarse view synthesis. The aim of our study is to determine whether needle-maps delivered by a new shape-from-shading (SFS) algorithm can be used as a compact object-representation for the purposes of e3ciently generating appearance manifolds. Speci4cally, we aim to show that the needle-maps can be used to generate novel object views und...

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