{"title":"Global visual cognition based on visual imagery and its mental connectivity","authors":"S. Xiao, Xiaoxing Liu","doi":"10.1109/BMEI.2013.6746910","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6746910","url":null,"abstract":"Visual cognition results from the interaction between objective images and cognitive subjects. In this paper, the concept mental connectivity of visual imagery is proposed for the first time, based on which a novel interpretation of the visual invariance stimulated by objective images is made on the level of global visual cognition. In addition, according to the research on the cognitive difficulty based on visual imagery, it is concluded that cognitive difficulty is positively correlative with the varying degree of local characteristics.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122965208","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}
Yang Song, Yu Gu, Peisen Wang, Yuanning Liu, A. Li
{"title":"A Kinect based gesture recognition algorithm using GMM and HMM","authors":"Yang Song, Yu Gu, Peisen Wang, Yuanning Liu, A. Li","doi":"10.1109/BMEI.2013.6747040","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6747040","url":null,"abstract":"Gesture recognition is a quite promising field in robotics and many Human-Computer Interaction (HCI) related areas. This research uses Microsoft® Kinect to capture the 3D position data of joints, and uses Gaussian Mixture Model (GMM) and Hidden Markov Model (HMM) to model full-body gestures. We propose a gesture recognition algorithm to segment gestures from real-time data flow, and finally achieved to recognize predefined full-body gestures in real-time. This proposed method gives a high recognition rate of 94.36%, indicating the capability of the new method.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126914168","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}
Jayasree Chakraborty, A. Midya, S. Mukhopadhyay, A. Sadhu
{"title":"Automatic characterization of masses in mammograms","authors":"Jayasree Chakraborty, A. Midya, S. Mukhopadhyay, A. Sadhu","doi":"10.1109/BMEI.2013.6746917","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6746917","url":null,"abstract":"The classification of benign and malignant masses in digital mammogram is an important yet challenging step for the early detection of breast cancer. This paper presents statistical measures of the orientation of texture to classify malignant and benign masses. Since the presence of mass in mammogram may change the orientation of normal breast tissues, two types of co-occurrence matrices are derived to estimate the joint occurrence of the angles of oriented structures for characterizing them. Haralick's 14 features are then extracted from each of the matrices derived from different regions related to mass. A total of 444 mass regions from 434 scanned-film images of the DDSM database are selected to evaluate the performance of the proposed features to differentiate the masses. The features are also compared with Haralick's features, obtained from well-known gray-level co-occurrence matrix. The best Az value of 0.77 is achieved with the stepwise logistic regression method for feature selection, an Fisher linear discriminant analysis for classification, and the leave-one-ROI-out approach for cross validation.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128242595","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}
{"title":"Generalized function projective synchronization of weighted cellular neural networks with multiple time-varying coupling delays","authors":"Xiangqian Gao, Guoliang Cai, Shuiming Cai","doi":"10.1109/BMEI.2013.6747042","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6747042","url":null,"abstract":"New sufficient conditions are derived to guarantee the generalized function projective synchronization of weighted cellular neural networks with multiple time-varying delays. Based on Lyapunov theory, this paper gives an adaptive feedback controlling method to identify the generalized function projective synchronization of weighted cellular neural networks with time-varying delays. Then, the synchronization of the weighted cellular neural networks with different nodes is considered. The parameters of this paper are considered in many aspects, which can be applied to practical.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127294641","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}
{"title":"Predictive model for minimal hepatic encephalopathy based on cerebral functional connectivity","authors":"Y. Jiao, G. Teng, Xunheng Wang","doi":"10.1109/BMEI.2013.6747000","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6747000","url":null,"abstract":"Minimal hepatic encephalopathy (MHE) is a common neurocognitive complication of liver cirrhosis, which have few recognizable clinical symptoms. Previous functional magnetic resonance imaging (fMRI) studies have found that widespread cortical and subcortical functional connectivity (FC) changes were significantly in patients with MHE. The goals of this study were twofold: 1) to construct predictive models for MHE, based on brain regional functional connectivity, 2) and to test feature selection method on p-value ranker based kernel principle component analysis (kPCA). Our study included thirty-two cirrhotic patients with MHE and twenty age-, gender-, and eduction-matched healthy controls. Using 1.5T MR, we obtained resting-state fMRI for each subject. Functional connectivities between 116 pairs of brain regions in patients with MHE were compared with those in control participants. Then, p-value ranker based kPCA was applied in feature selection step to reduce the dimension of input data. The best parameters of feature selection were chose based on 10-fold cross-validation of vector machines (SVMs). Finally, We found FC-based diagnostic model was accurate in differing MHE from normal controls with 86.5% accuracy, 88% specifity and 85% sensitivity.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127304817","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}
{"title":"Nonrigid registration for evaluating locoregional therapy of hepatocellular carcinoma","authors":"Chunhua Dong, T. Seki, Ryosuke Inoguchi, Chen-Lun Lin, X. Han, Yenwei Chen","doi":"10.1109/BMEI.2013.6747052","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6747052","url":null,"abstract":"The assessment of the treated margin with locoregional therapy (LT), for hepatocellular carcinoma (HCC), is the common method for predicting HCC recurrence in most hospital. However, tumors sometimes cannot be removed clearly with LT in limited conditions. The therapeutic efficiency of HCC is often evaluated by comparing 2D fusion images of computed tomography (CT) or magnetic resonance imaging (MRI) between the preoperation and the postoperation. However, judgment about whether the tumors exist in the treated margin after LT by using 2D slices sometimes is difficult. It is desirable to develop a suitable image registration algorithm to automatically align the two volumes in order to transform the treated margin of the postoperative volume to the tumor of the preoperative volume to assess the therapeutic efficiency after treatment of HCC. With taking these into consideration, this paper proposed an automatic 3D fusion imaging approach for medical image by using the nonrigid registration method that aligning an ablative margin - that is the treated margin after LT, onto the locations of HCC. In our registration algorithm, a rigid global transformation combined with localized B-spline is used to estimate the significant nonrigid motions of the liver between before and after LT. Our proposed approach can ensure the feasibility, the accuracy and the efficacy to assess the treated margin for HCC. Furthermore, this method can be adapted to register multi-modality medical images. We demonstrate the effectiveness of our proposed method by comparing the difference criterions of fusion evaluation on medical images. The results clearly indicate that our method extremely useful in the evaluation of the treated margin, in addition, it remain the motion and local deformation of the volume.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130638630","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}
{"title":"Recognition of microRNA-binding sites in proteins from sequences using Laplacian Support Vector Machines with a hybrid feature","authors":"Jiansheng Wu, Wei Han, Dong Hu, Xin Xu, Shancheng Yan, L. Tang","doi":"10.1109/BMEI.2013.6746990","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6746990","url":null,"abstract":"The recognition of microRNA (miRNA)-binding residues in proteins would further enhance our understanding of how miRNAs silence their target genes and some relevant biological processes. Due to the insufficient labeled examples, traditional methods such as SVMs could not work well on such problems. Thus, we propose a semi-supervised learning method, i.e., Laplacian Support Vector Machine (LapSVM) for recognizing miRNA-binding residues in proteins from sequences by making use of both labeled and unlabeled data in this article. A hybrid feature is put forward for coding instances which incorporates evolutionary information of the amino acid sequence and mutual interaction propensities in protein-miRNA complex structures. The results indicate that the LapSVM model receives good performance with a F1 score of 22.06±0.28% and an AUC (area under the ROC curve) value of 0.760±0.043. A web server called MBindR is built and freely available at http:// cbi.njupt.edu.cn/MBindR/MBindR.htm for academic usage.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132022572","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}
{"title":"Sparse model in hierarchic spatial structure for food image recognition","authors":"R. Kusumoto, X. Han, Yenwei Chen","doi":"10.1109/BMEI.2013.6747060","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6747060","url":null,"abstract":"Recent year, with the increasing of unhealthy diets which will threaten people's life due to the various resulted risks such as heart stroke, liver trouble and so on, the remain for healthy life has attracted much attention and then how to manage the dietary life is becoming more and more important. In this research, we aim to construct a auto-recognition system of food images and keep the daily food-log records which will contribute to manage dietary life. With the easily available food images taken by mobile phone, it prospects to give the insight about the daily dietary of users with our constructed food recognition system. In order to achieve the acceptable recognition performance of the food images, we propose to apply a sparse model for coding a local descriptor extracted from the food images. Sparse coding: an extension of vector quantization for local descriptors, which is popularly used in Bag-of-Features (BoF) for image representation in generic object recognition, can represent the local descriptors more efficient, and then abtain more discriminant feature for food image representation. Moreover, in order to introduce spatial information, a hierarchic spatial structure is explored to extract the feature based sparse model. Experiments validate that the proposed strategy can greatly improve the recognition rates compared with the conventional BOF model on two databases: our constructed RFID and the public PFID.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132117247","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}
{"title":"A neural network technique for feature selection and identification of obstructive sleep apnea","authors":"A. Hossen","doi":"10.1109/BMEI.2013.6746930","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6746930","url":null,"abstract":"A novel identification method of Obstructive Sleep Apnea from normal controls is presented in this paper. The method uses the approximate power spectral density of heart rate variability, which is estimated using a soft-decision wavelet-based decomposition in a combination with a neural network. The neural network is used for two purposes: to select the optimum frequency bands that can be used for identification during the feature extraction step, and to identify the data during the feature matching step. Two sets of data, training set and test set, which are downloaded from the MIT-data bases, are used in this work. The training set, which consists of 20 obstructive sleep apnea subjects and 10 normal subjects, is used to train the neural network of type feed-forward back-propagation. The test set, which consists also of 20 obstructive sleep apnea and 10 normal subjects is used to test the performance of the identification system. A best identification efficiency of 93.33% has been obtained in this work using three inputs only.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"35 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132680008","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}
{"title":"Teeth segmentation via semi-supervised learning","authors":"Yonghui Gao, Xiaoxiao Li","doi":"10.1109/BMEI.2013.6747003","DOIUrl":"https://doi.org/10.1109/BMEI.2013.6747003","url":null,"abstract":"Efficient dental segmentation from volume data provides important assistance for orthodontic surgery and treatment. However, this task exits several major challenges due to the special dental anatomy and topological changes. This paper presents a robust interactive dental segmentation method, which treats this problem as a semi-supervised learning task. An initial classification of 3D mean shift is performed to partition the volume data into homogeneous blocks to guide the subsequent learning. It is easy to implement because only some simple operations are needed. It is accurate because a more general linear or nonlinear model can be learned by virtue of semi-supervised learning. Experimental results demonstrate the performance of the proposed scheme in extracting dental contours from complex background.","PeriodicalId":163211,"journal":{"name":"2013 6th International Conference on Biomedical Engineering and Informatics","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132727698","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}