Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013最新文献_第4页

Evaluation of the parameters of spectral subtraction techniques and its effects on speech signal quality 频谱减法技术参数的评价及其对语音信号质量的影响

Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013 Pub Date : 2013-10-24 DOI: 10.1109/STSIVA.2013.6644918

H. Carvajal, N. García

引用次数: 0

ECG signal analysis using temporary dynamic sequence alignment 基于临时动态序列对齐的心电信号分析

Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013 Pub Date : 2013-10-24 DOI: 10.1109/STSIVA.2013.6644910

V. Molina, Gerardo Ceballos, Hermann Dávila

引用次数: 4

Design and implementation of a protocol for acquisition and processing of infrared images obtained from hands 设计并实现了一种用于采集和处理手红外图像的协议

Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013 Pub Date : 2013-10-24 DOI: 10.1109/STSIVA.2013.6644944

Kevin Estupinan Roldan, M. A. Piedrahita, Hernan Dario Benitez

引用次数: 7

Automatic assessment of voice signals according to the GRBAS scale using modulation spectra, Mel frequency Cepstral Coefficients and Noise parameters 根据GRBAS尺度使用调制频谱，Mel频率倒谱系数和噪声参数自动评估语音信号

Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013 Pub Date : 2013-10-24 DOI: 10.1109/STSIVA.2013.6644930

T. Villa-Cañas, J. Orozco-Arroyave, J. D. Arias-Londoño, J. Vargas-Bonilla, J. Godino-Llorente

引用次数: 9

Image processing and correction of the apparent broadening of species concentration profiles in laminar counterflow flames 层流逆流火焰中物质浓度分布明显展宽的图像处理与校正

Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013 Pub Date : 2013-10-24 DOI: 10.1109/STSIVA.2013.6644907

D. Alviso, J. Rolón, P. Scouflaire, N. Darabiha

{"title":"Image processing and correction of the apparent broadening of species concentration profiles in laminar counterflow flames","authors":"D. Alviso, J. Rolón, P. Scouflaire, N. Darabiha","doi":"10.1109/STSIVA.2013.6644907","DOIUrl":"https://doi.org/10.1109/STSIVA.2013.6644907","url":null,"abstract":"This work study the influence of the light refraction in the apparent broadening of species experimental profiles in counterflow premixed flames. In fact, in a counterflow premixed flame, is generated a layered medium by the temperature gradient which induces a change in the milieu refractive index, causing a deviation of rays emitted by each point of the flame, and therefore producing a broadening of species experimental profiles. The Gladstone-Dale relation was used to estimate the medium refractive index along the burner axis, taking into account the gas density and composition. And then Snell's law for an inhomogeneous medium was used in order to estimate the light refraction, due to the variation of the medium refractive index. As it will be shown, for counterflow premixed flames, the light refraction is negligible, due to the low variation of the medium refractive index along the counterflow burner. However, the same procedure described here can be used to study the light refraction in other experimental configurations, where the medium refractive index varies considerably.","PeriodicalId":359994,"journal":{"name":"Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127030992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Automatic component rejection based on fuzzy clustering for noise reduction in electroencephalographic signals 基于模糊聚类的脑电信号降噪自动分量抑制

Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013 Pub Date : 2013-10-24 DOI: 10.1109/STSIVA.2013.6644922

C. Bedoya, Daniel Estrada, S. Trujillo, N. Trujillo, David A. Pineda, J. López

{"title":"Automatic component rejection based on fuzzy clustering for noise reduction in electroencephalographic signals","authors":"C. Bedoya, Daniel Estrada, S. Trujillo, N. Trujillo, David A. Pineda, J. López","doi":"10.1109/STSIVA.2013.6644922","DOIUrl":"https://doi.org/10.1109/STSIVA.2013.6644922","url":null,"abstract":"Among the techniques for measuring brain response, Electroencephalography (EEG) remains as the most popular for acquiring electrical brain activity over time. Currently, Event Related Potentials (ERPs) are used to detect electrophysiological responses of the brain due to a stimulus. They are usually measured by EEG due to its high temporal resolution and minimal invasiveness of the procedure. Nevertheless, EEG is well known for its high noise levels. Artifact noise (Muscular movement) is the most common and non-desired source of noise in EEG. There are basically two different ways of reducing it: (i) Suppressing the time windows with artifacts (manually). (ii) Using noise estimation algorithms to remove non-deterministic components produced by artifacts in the signal. Typically; those algorithms are based on Independent Component Analysis (ICA). However, ICA requires performing component rejection by qualified medical personnel using visual inspection, i.e., they are dependent of trained personnel for performing visual artifact or component rejection. In this manuscript a new approach for automatic component rejection based on fuzzy clustering is proposed. It considers the contributions of all components in order to remove those with non-desired elements. The proposed approach supports the decision-making procedure imitating the human learning process. It does not require the number of classes as input parameter as most of the based fuzzy clustering classification methodologies, and estimates the similarity among data leading to a non-iterative process.","PeriodicalId":359994,"journal":{"name":"Symposium of Signals, Images and Artificial Vision - 2013: STSIVA - 2013","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132829011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6