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2014 22nd European Signal Processing Conference (EUSIPCO)最新文献

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Color information in a model of saliency 显着性模型中的颜色信息
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.44191
Shahrbanoo Hamel, N. Guyader, D. Pellerin, D. Houzet
{"title":"Color information in a model of saliency","authors":"Shahrbanoo Hamel, N. Guyader, D. Pellerin, D. Houzet","doi":"10.5281/ZENODO.44191","DOIUrl":"https://doi.org/10.5281/ZENODO.44191","url":null,"abstract":"Bottom-up saliency models have been developed to predict the location of gaze according to the low level features of visual scenes, such as intensity, color, frequency and motion. We investigate in this paper the contribution of color features in computing the bottom-up saliency. We incorporated a chrominance pathway to a luminance-based model (Marat et al. [1]). We evaluated the performance of the model with and without chrominance pathway. We added an efficient multi-GPU implementation of the chrominance pathway to the parallel implementation of the luminance-based model proposed by Rahman et al. [2], preserving real time solution. Results show that color information improves the performance of the saliency model in predicting eye positions.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114725572","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: 5
Rate distortion optimized tone curve for high dynamic range compression 率失真优化音调曲线的高动态范围压缩
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.43894
Mikael Le Pendu, C. Guillemot, D. Thoreau
{"title":"Rate distortion optimized tone curve for high dynamic range compression","authors":"Mikael Le Pendu, C. Guillemot, D. Thoreau","doi":"10.5281/ZENODO.43894","DOIUrl":"https://doi.org/10.5281/ZENODO.43894","url":null,"abstract":"In this paper, we define a reversible tone mapping-operator (TMO) for efficient compression of High Dynamic Range (HDR) images using a Low Dynamic Range (LDR) encoder. In our compression scheme, the HDR image is tone mapped and encoded. The inverse tone curve is also encoded, so that the decoder can reconstruct the HDR image from the LDR version. Based on a statistical model of the encoder error and assumptions on the rate of the encoded LDR image, we find a closed form solution for the optimal tone curve with respect to the rate and the mean square error (MSE) of the reconstructed HDR image. It is shown that the proposed method gives superior compression performance compared to existing tone mapping operators.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116939597","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: 5
Speech rate determination by vowel detection on the modulated energy envelope 利用调制能量包络上的元音检测确定语音速率
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.43864
Tomas Dekens, Heidi Martens, Gwen Van Nuffelen, M. Bodt, W. Verhelst
{"title":"Speech rate determination by vowel detection on the modulated energy envelope","authors":"Tomas Dekens, Heidi Martens, Gwen Van Nuffelen, M. Bodt, W. Verhelst","doi":"10.5281/ZENODO.43864","DOIUrl":"https://doi.org/10.5281/ZENODO.43864","url":null,"abstract":"In this paper we propose a new algorithm to detect vowels in a speech utterance and infer the rate at which speech was produced. To achieve this we determine a smooth trajectory that corresponds to a high frequency energy envelope, modulated by the low frequency energy content. Peak picking performed on this trajectory gives an estimate of the number of vowels in the utterance. To dispose of falsely detected vowels, a peak pruning post-processing step is incorporated. Experimental results show that the proposed algorithm is more accurate than the two speech rate determination algorithms on which it was inspired.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124843854","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: 12
Correlation test for high dimensional data with application to signal detection in sensor networks 高维数据的相关检验及其在传感器网络信号检测中的应用
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.44037
X. Mestre, P. Vallet, W. Hachem
{"title":"Correlation test for high dimensional data with application to signal detection in sensor networks","authors":"X. Mestre, P. Vallet, W. Hachem","doi":"10.5281/ZENODO.44037","DOIUrl":"https://doi.org/10.5281/ZENODO.44037","url":null,"abstract":"The problem of correlation detection of multivariate Gaussian observations is considered. The problem is formulated as a binary hypothesis test, where the null hypothesis corresponds to a diagonal correlation matrix with possibly different diagonal entries, whereas the alternative would be associated to any other form of positive covariance. Using tools from random matrix theory, we study the asymptotic behavior of the Generalized Likelihood Ratio Test (GLRT) under both hypothesis, assuming that both the sample size and the observation dimension tend to infinity at the same rate. It is shown that the GLRT statistic always converges to a Gaussian distribution, although the asymptotic mean and variance will strongly depend the actual hypothesis. Numerical simulations demonstrate the superiority of the proposed asymptotic description in situations where the sample size is not much larger than the observation dimension.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129672973","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: 4
Performance analysis of the opportunistic multi-relay network with co-channel interference 具有同信道干扰的机会多中继网络性能分析
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.44111
J. Hussein, S. Ikki, S. Boussakta, C. Tsimenidis
{"title":"Performance analysis of the opportunistic multi-relay network with co-channel interference","authors":"J. Hussein, S. Ikki, S. Boussakta, C. Tsimenidis","doi":"10.5281/ZENODO.44111","DOIUrl":"https://doi.org/10.5281/ZENODO.44111","url":null,"abstract":"A study of the effect of co-channel interference (CCI) on the performance of opportunistic multi-relay amplify-and-forward cooperative communication network is presented. Precisely, we consider the CCI exists at both relays and destination nodes. Exact equivalent end-to-end signal-to-interference-plus-noise ratio (SINR) is derived. Then, closed-form expressions for both cumulative distribution function (CDF) and probability density function (PDF) of the received SINR at the destination node are obtained. The derived expressions are used to measure the asymptotic outage probability of the system. Numerical results and Matlab simulations are also provided to sustain the correctness of the analytical calculations.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125312211","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: 8
Gait feature selection in walker-assisted gait using NSGA-II and SVM hybrid algorithm 基于NSGA-II和SVM混合算法的助行器步态特征选择
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.43946
M. Martins, C. Santos, L. Costa, A. Frizera-Neto
{"title":"Gait feature selection in walker-assisted gait using NSGA-II and SVM hybrid algorithm","authors":"M. Martins, C. Santos, L. Costa, A. Frizera-Neto","doi":"10.5281/ZENODO.43946","DOIUrl":"https://doi.org/10.5281/ZENODO.43946","url":null,"abstract":"Nowadays, walkers are prescribed based on subjective standards that lead to incorrect indication of such devices to patients. This leads to the increase of dissatisfaction and occurrence of discomfort and fall events. Therefore, it is necessary to objectively evaluate the effects that walker can have on the gait patterns of its users, comparatively to non-assisted gait. A gait analysis, focusing on spatiotemporal and kinematics parameters, will be issued for this purpose. However, gait analysis yields redundant information and this study addresses this problem by selecting the most relevant gait features required to differentiate between assisted and non-assisted gait. In order to do this, it is proposed an approach that combines multi-objective genetic and support vector machine algorithms to discriminate differences. Results with healthy subjects have shown that the main differences are characterized by balance and joints excursion. Thus, one can conclude that this technique is an efficient feature selection approach.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127727595","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: 3
Room reflections assisted spatial sound field reproduction 室内反射有助于空间声场再现
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.44211
P. Samarasinghe, T. Abhayapala, M. Poletti
{"title":"Room reflections assisted spatial sound field reproduction","authors":"P. Samarasinghe, T. Abhayapala, M. Poletti","doi":"10.5281/ZENODO.44211","DOIUrl":"https://doi.org/10.5281/ZENODO.44211","url":null,"abstract":"With recent advances in surround sound technology, an increased interest is shown in the problem of virtual sound reproduction. However, the performance of existing surround sound systems are degraded by factors like room reverberation and listener movements. In this paper, we develop a novel approach to spatial sound reproduction in reverberant environments, where room reverberation is constructively incorporated with the direct source signals to recreate a virtual reality. We also show that the array of monopole loudspeakers required for reproduction can be clustered together in a small spatial region away from the listening area, which in turn enables the array's practical implementation via a single loudspeaker unit with multiple drivers.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116731274","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
NMF with spectral and temporal continuity criteria for monaural sound source separation 具有频谱和时间连续性准则的单声源分离NMF
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.43854
J. Becker, Christian Sohn, Christian Rohlfing
{"title":"NMF with spectral and temporal continuity criteria for monaural sound source separation","authors":"J. Becker, Christian Sohn, Christian Rohlfing","doi":"10.5281/ZENODO.43854","DOIUrl":"https://doi.org/10.5281/ZENODO.43854","url":null,"abstract":"Nonnegative Matrix Factorization (NMF) is a well suited and widely used method for monaural sound source separation. It has been shown, that an additional cost term supporting temporal continuity can improve the separation quality [1]. We extend this model by adding a cost term, that penalizes large variations in the spectral dimension. We propose two different cost terms for this purpose and also propose a new cost term for temporal continuity. We evaluate these cost terms on different mixtures of samples of pitched instruments, drum sounds and other acoustical signals. Our results show, that penalizing large spectral variations can improve separation quality. The results also show, that our alternative temporal continuity cost term leads to better separation results than the temporal continuity cost term proposed in [1].","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125724800","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: 9
A computationally-efficient single-channel speech enhancement algorithm for monaural hearing aids 一种计算效率高的单耳助听器单通道语音增强算法
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.43843
D. Ayllón, R. Gil-Pita, M. Utrilla-Manso, M. Rosa-Zurera
{"title":"A computationally-efficient single-channel speech enhancement algorithm for monaural hearing aids","authors":"D. Ayllón, R. Gil-Pita, M. Utrilla-Manso, M. Rosa-Zurera","doi":"10.5281/ZENODO.43843","DOIUrl":"https://doi.org/10.5281/ZENODO.43843","url":null,"abstract":"A computationally-efficient single-channel speech enhancement algorithm to improve intelligibility in monaural hearing aids is presented in this paper. The algorithm combines a novel set of features with a simple supervised machine learning technique to estimate the frequency-domain Wiener filter for noise reduction, using extremely low computational resources. Results show a noticeable intelligibility improvement in terms of PESQ score and SNRESI, even for low input SNR, using only a 7% of the computational resources available in a state-of-the-art commercial hearing aid. The performance of the algorithm is comparable to the performance of current algorithms that use more computationally complex features and learning schemas.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134215751","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
A maxmin model for solving channel assignment problem in IEEE 802.11 networks 一种解决IEEE 802.11网络中信道分配问题的maxmin模型
2014 22nd European Signal Processing Conference (EUSIPCO) Pub Date : 2014-11-13 DOI: 10.5281/ZENODO.43948
Mohamed Elwekeil, M. Alghoniemy, O. Muta, A. A. El-Rahman, H. Furukawa, H. Gačanin
{"title":"A maxmin model for solving channel assignment problem in IEEE 802.11 networks","authors":"Mohamed Elwekeil, M. Alghoniemy, O. Muta, A. A. El-Rahman, H. Furukawa, H. Gačanin","doi":"10.5281/ZENODO.43948","DOIUrl":"https://doi.org/10.5281/ZENODO.43948","url":null,"abstract":"In this paper, an optimization model for solving the channel assignment problem in multi-cell WLANs is proposed. This model is based on maximizing the minimum distance between access points (APs) that work on the same channel. The proposed model is formulated in the form of a mixed integer linear program (MILP). The main advantage of the proposed algorithm is that it ensures non-overlapping channel assignment with no overhead power measurements. The proposed channel assignment algorithm can be implemented within practical time frames for different topology sizes. Simulation results indicate that the proposed algorithm exhibits better performance than that of the pick-first greedy algorithm and the single channel assignment method.","PeriodicalId":198408,"journal":{"name":"2014 22nd European Signal Processing Conference (EUSIPCO)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130955441","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
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