نتایج جستجو برای: some tf seismic attributes are extracted the attributes include instantaneous amplitude

تعداد نتایج: 16303530  

Journal: :IEEE Trans. Signal Processing 2000
Richard G. Baraniuk Mark Coates Philippe Steeghs

We present an efficient method for robustly calculating time–frequency attributes of a signal, including instantaneous mean frequency, bandwidth, kurtosis, and other moments. Most current attribute estimation techniques involve a costly intermediate step of computing a (highly oversampled) two-dimensonal (2-D) quadratic time–frequency representation (TFR), which is then collapsed to the one-dim...

Journal: :int. journal of mining & geo-engineering 2014
saeed mojeddifar gholamreza kamali hojjatolah ranjbar babak salehipour bavarsad

this paper presents a comparative study between three versions of adaptive neuro-fuzzy inference system (anfis) algorithms and a pseudo-forward equation (pfe) to characterize the north sea reservoir (f3 block) based on seismic data. according to the statistical studies, four attributes (energy, envelope, spectral decomposition and similarity) are known to be useful as fundamental attributes in ...

Background and Objective: Due to the limited individual approach to behavior change, health promotion researchers use community-based initiatives to understand the factors affecting physical activity and promote the health of citizens. Urban open spaces can facilitate participation in physical activity and the health of citizens. The aim of this study is to identify the indicators, attributes, ...

The purpose of this paper is to present the possibility of replacing physical unit cost in transportation or distribution problems by an aggregate coefficient, getting qualitative and subjective considerations involved. The model for constructing aggregate cost is a two stage multiple attribute decision-making problems. In the first stage supply points, demand points and routes of transportatio...

2008
H. Hashemi D. M. J. Tax R. P. W. Duin P. de Groot

Seismic object detection is a relatively new field in which 3-D bodies are visualized and spatial relationships between objects of different origins are studied in order to extract geologic information. In this paper, we propose a method for finding an optimal classifier with the help of a statistical feature ranking technique and combining different classifiers. The method, which has general a...

1998
E. BULLOCH Wayne D. Pennington Theodore J. Bornhorst

Seismic data are used in petroleum exploration to define geologic features in the subsurface. Recent advancements in seismic exploration have examined the effect of fluid and rock properties on seismic attributes. These advancements may provide improved reservoir characterization using techniques examined here. This is accomplished two parts; first, a study of fluid properties and their effect ...

Journal: :Comput. Graph. Forum 2016
Patric Ljung Jens H. Krüger Eduard Gröller Markus Hadwiger Charles D. Hansen Anders Ynnerman

A central topic in scientific visualization is the transfer function (TF) for volume rendering. The TF serves a fundamental role in translating scalar and multivariate data into color and opacity to express and reveal the relevant features present in the data studied. Beyond this core functionality, TFs also serve as a tool for encoding and utilizing domain knowledge and as an expression for vi...

This paper presents a comparative study between three versions of adaptive neuro-fuzzy inference system (ANFIS) algorithms and a pseudo-forward equation (PFE) to characterize the North Sea reservoir (F3 block) based on seismic data. According to the statistical studies, four attributes (energy, envelope, spectral decomposition and similarity) are known to be useful as fundamental attributes in ...

2012
Alex G. Smith Christopher X. S. Zee Alexandra L. Uitdenbogerd

We investigated methods for the discovery of clichés from song lyrics. Trigrams and rhyme features were extracted from a collection of lyrics and ranked using term-weighting techniques such as tf-idf. These attributes were also examined over both time and genre. We present an application to produce a cliché score for lyrics based on these findings and show that number one hits are substantially...

2007
F. Verhelst

Attributes remain to be of the utmost importance for the characterization of seismic data. Especially in the scale-range where tuning effects play, the understanding of what is happening, and the subsequent technology to extract the proper attributes from the huge seismic data-volumes remains current. This study starts with the analysis of a set of typical petrophysical log shapes. These log sh...

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