2014 IEEE International Conference on Image Processing (ICIP)最新文献_第3页

A mutual reference shape based on information theory 基于信息论的相互参考形状

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025178

S. Jehan-Besson, C. Tilmant, A. Cesare, A. Lalande, A. Cochet, J. Cousty, J. Lebenberg, M. Lefort, P. Clarysse, R. Clouard, Laurent Najman, L. Sarry, F. Frouin, M. Garreau

{"title":"A mutual reference shape based on information theory","authors":"S. Jehan-Besson, C. Tilmant, A. Cesare, A. Lalande, A. Cochet, J. Cousty, J. Lebenberg, M. Lefort, P. Clarysse, R. Clouard, Laurent Najman, L. Sarry, F. Frouin, M. Garreau","doi":"10.1109/ICIP.2014.7025178","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025178","url":null,"abstract":"In this paper, we consider the estimation of a reference shape from a set of different segmentation results using both active contours and information theory. The reference shape is defined as the minimum of a criterion that benefits from both the mutual information and the joint entropy of the input segmentations and is then called a mutual shape. This energy criterion is here justified using similarities between information theory quantities and area measures, and presented in a continuous variational framework. This framework brings out some interesting evaluation measures such as the specificity and sensitivity. In order to solve this shape optimization problem, shape derivatives are computed for each term of the criterion and interpreted as an evolution equation of an active contour. Some synthetical examples allow us to cast the light on the difference between our mutual shape and an average shape. Our framework has been considered for the estimation of a mutual shape for the evaluation of cardiac segmentation methods in MRI.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"107 1","pages":"887-891"},"PeriodicalIF":0.0,"publicationDate":"2014-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85146303","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

Fusion of imprecise data applied to image quality assessment 不精确数据融合在图像质量评估中的应用

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025104

N. Guettari, A. Capelle-Laizé, P. Carré

引用次数: 1

Restoration of ultrasound images using a hierarchical Bayesian model with a generalized Gaussian prior 利用广义高斯先验的层次贝叶斯模型恢复超声图像

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025928

Ningning Zhao, A. Basarab, D. Kouamé, J. Tourneret

引用次数: 12

An audiovisual attention model for natural conversation scenes 自然对话场景的视听注意模型

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025219

A. Coutrot, Nathalie Guyader

引用次数: 36

Stereoscopic image quality metric based on local entropy and binocular just noticeable difference 基于局部熵的立体图像质量度量与双目图像仅显着差异

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025401

Sid Ahmed Fezza, M. Larabi, K. Faraoun

{"title":"Stereoscopic image quality metric based on local entropy and binocular just noticeable difference","authors":"Sid Ahmed Fezza, M. Larabi, K. Faraoun","doi":"10.1109/ICIP.2014.7025401","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025401","url":null,"abstract":"Developing a metric that can reliably predict the perceptual 3D quality as perceived by the end user, is a challenging issue and a necessary tool for the success of 3D multimedia applications. The various attempts at predicting 3D quality of experience as the combination of 2D quality of the left and right images have shown their limitations, and particularly for the case of asymmetric distortions. In this paper we propose a full reference quality assessment metric for stereoscopic images based on the perceptual binocular characteristics. The proposed metric handles effectively the asymmetric distortions of stereoscopic images, by incorporating human visual system (HVS) characteristics. Our approach was motivated by the fact that in case of asymmetric quality, 3D perception mechanisms supports the view providing the most important and contrasted information. To achieve that, weighting factors are defined for the quality of each view according to the local information content. Add to that, to take into account the sensitivity of the HVS, quality score of each region are modulated based on the Binocular Just Noticeable Difference (BJND). Experimental results show that the proposed metric correlates better with human perception than the state-of-the-art metrics.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"76 1","pages":"2002-2006"},"PeriodicalIF":0.0,"publicationDate":"2014-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86086547","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: 22

Upper limb movement analysis via marker tracking with a single-camera system 单摄像机系统标记跟踪上肢运动分析

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025463

Cheng Yang, A. Kerr, V. Stanković, L. Stanković, P. Rowe

{"title":"Upper limb movement analysis via marker tracking with a single-camera system","authors":"Cheng Yang, A. Kerr, V. Stanković, L. Stanković, P. Rowe","doi":"10.1109/ICIP.2014.7025463","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025463","url":null,"abstract":"Optical motion capture systems have been widely adopted for human motion analysis in stroke rehabilitation because of real-time processing and high-accuracy features. However, these systems require a large laboratory space and multiple cameras and thus can be expensive and not transportable. In this paper, we propose a portable, cheap, single-camera motion analysis system to implement upper limb movement analysis. The proposed system consists of video acquisition, camera calibration, marker tracking, autonomous joint angle calculation, visualization, validation and classification. The validation with a state-of-the-art optical motion analysis system using Bland-Altman plot, a typical clinical measure, indicates that the proposed system can accurately capture elbow movement, trunk-tilt, and shoulder movement for diagnosis. Furthermore, the volunteers are explicitly classified into healthy and stroke groups via a support vector machine trained on statistics of the trunk-tilt and shoulder movement. Experimental results show that the proposed system can accurately capture the upper limb movement patterns, automatically classify stroke survivors using ordinal scale classification of upper limb impairment, and offer a convenient and inexpensive solution for upper limb movement analysis.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"59 1","pages":"2285-2289"},"PeriodicalIF":0.0,"publicationDate":"2014-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89091548","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: 11

Ocean surface current retrieval using a non homogeneous Markov-switching multi-regime model 基于非均匀马尔可夫开关多状态模型的海洋表面流反演

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025600

P. Tandeo, Ronan Fablet, P. Ailliot

{"title":"Ocean surface current retrieval using a non homogeneous Markov-switching multi-regime model","authors":"P. Tandeo, Ronan Fablet, P. Ailliot","doi":"10.1109/ICIP.2014.7025600","DOIUrl":"https://doi.org/10.1109/ICIP.2014.7025600","url":null,"abstract":"This paper addresses the reconstruction of sea surface currents from satellite ocean sensing data. Whereas the classical surface currents derived from the SSH (Sea Surface Height) products are rather low space-time resolution fields (typically, 50 km and 12-day actual space-time grid resolution), we investigate the extent to which we can retrieve sea surface currents at higher resolution using daily SST (Sea Surface Temperature) satellite observations. State-of-the-art methods, which exploit classical optical flow schemes or nonlinear regression techniques, do not provide satisfactory results due to the space-time variabilities of the relationships between the SST and the sea surface current. Motivated by our recent joint SST-SSH identification of characterization of upper ocean dynamical modes, we here show that a multiregime model, formally stated as a Markov-switching latent class regression model, provides a relevant model to capture the above-mentioned variabilities and reconstruct SST-driven sea surface currents. The considered case study within the Agulhas current demonstrates that our model retrieves highresolution space-time details which cannot be resolved by the classical SSH-derived products.","PeriodicalId":6856,"journal":{"name":"2014 IEEE International Conference on Image Processing (ICIP)","volume":"29 1","pages":"2968-2972"},"PeriodicalIF":0.0,"publicationDate":"2014-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89311628","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: 0

Exemplar-based colorization in RGB color space 在RGB色彩空间中基于范例的着色

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025125

F. Pierre, Jean-François Aujol, Aurélie Bugeau, N. Papadakis, Vinh-Thong Ta

引用次数: 16

Cardiac motion analysis using wavelet projections from tagged MR sequences 利用标记MR序列的小波投影进行心脏运动分析

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025037

Y. Farouj, Liang Wang, P. Clarysse, L. Navarro, M. Clausel, P. Delachartre

引用次数: 0

Reconstruction of compressively sampled ultrasound images using dual prior information 利用双先验信息重建压缩采样超声图像

2014 IEEE International Conference on Image Processing (ICIP) Pub Date : 2014-10-27 DOI: 10.1109/ICIP.2014.7025256

A. Achim, A. Basarab, G. Tzagkarakis, P. Tsakalides, D. Kouamé

引用次数: 13