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Signal and image processing : an international journal最新文献

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BRAIN PORTION EXTRACTION USING HYBRID CONTOUR TECHNIQUE USING SETS FOR T1 WEIGHTED MRI OF HUMAN HEAD SCANS 使用混合轮廓技术提取人类头部扫描的t1加权mri
Signal and image processing : an international journal Pub Date : 2016-02-28 DOI: 10.5121/SIPIJ.2016.7102
Karuppanagounder Somasundaram, P. A. Kalaividya
{"title":"BRAIN PORTION EXTRACTION USING HYBRID CONTOUR TECHNIQUE USING SETS FOR T1 WEIGHTED MRI OF HUMAN HEAD SCANS","authors":"Karuppanagounder Somasundaram, P. A. Kalaividya","doi":"10.5121/SIPIJ.2016.7102","DOIUrl":"https://doi.org/10.5121/SIPIJ.2016.7102","url":null,"abstract":"Brain portion extraction from magnetic resonance image (MRI) of human head scan is an important process in medical image analysis. In this paper, we propose a computationally simple and a robust brain segmentation method. This method is based on forming a contour using the intensity values that satisfy a set property and detect the boundary of the brain. After detecting the brain boundary the brain portion is segmented. Experiments were conducted by applying the method on 3 volumes of T1 MRI data set collected from Internet Brain Segmentation Repository(IBSR) and compared the results with that of the popular skull stripping method Brain Extraction Tool (BET). The experimental results show that the proposed algorithm gives better results than that of BET.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"141 1","pages":"11-19"},"PeriodicalIF":0.0,"publicationDate":"2016-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83425386","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
NIRS-BASED CORTICAL ACTIVATION ANALYSIS BY TEMPORAL CROSS CORRELATION 基于nirs的皮层激活分析
Signal and image processing : an international journal Pub Date : 2016-02-28 DOI: 10.5121/SIPIJ.2016.7104
Raul Fernandez-Rojas, Xu Huang, Jehú López-Aparicio
{"title":"NIRS-BASED CORTICAL ACTIVATION ANALYSIS BY TEMPORAL CROSS CORRELATION","authors":"Raul Fernandez-Rojas, Xu Huang, Jehú López-Aparicio","doi":"10.5121/SIPIJ.2016.7104","DOIUrl":"https://doi.org/10.5121/SIPIJ.2016.7104","url":null,"abstract":"In this study we present a method of signal processing to determine dominant channels in near infrared spectroscopy (NIRS). To compare measuring channels and identify delays between them, cross correlation is computed. Furthermore, to find out possible dominant channels, a visual inspection was performed. The outcomes demonstrated that the visual inspection exhibited evoked-related activations in the primary somatosensory cortex (S1) after stimulation which is consistent with comparable studies and the cross correlation study discovered dominant channels on both cerebral hemispheres. The analysis also showed a relationship between dominant channels and adjacent channels. For that reason, our results present a new method to identify dominant regions in the cerebral cortex using near-infrared spectroscopy. These findings have also implications in the decrease of channels by eliminating irrelevant channels for the experiment.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"9 1","pages":"31-41"},"PeriodicalIF":0.0,"publicationDate":"2016-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79072973","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
INHIBITION AND SET -SHIFTING TASKS IN CENTRAL EXECUTIVE FUNCTION OF WORKING MEMORY : AN EVENT -RELATED POTENTIAL (ERP) STUDY 工作记忆中央执行功能的抑制和设定转移任务:一个事件相关电位(erp)研究
Signal and image processing : an international journal Pub Date : 2016-02-28 DOI: 10.5121/sipij.2016.7105
Pankaj, J. Rajeswaran, Divya Sadana Deptartment of Clinical Psychology, N. Health, Neurosciences, Bangalore, India.
{"title":"INHIBITION AND SET -SHIFTING TASKS IN CENTRAL EXECUTIVE FUNCTION OF WORKING MEMORY : AN EVENT -RELATED POTENTIAL (ERP) STUDY","authors":"Pankaj, J. Rajeswaran, Divya Sadana Deptartment of Clinical Psychology, N. Health, Neurosciences, Bangalore, India.","doi":"10.5121/sipij.2016.7105","DOIUrl":"https://doi.org/10.5121/sipij.2016.7105","url":null,"abstract":"Understanding of neuro-dynamics of a complex higher cognitive process, Working Memory (WM) is challenging. In WM, information processing occurs through four subsystems: phonological loop, visual sketch pad, memory buffer and central executive function (CEF). CEF plays a principal role in WM. In this study, our objective was to understand the neurospatial correlates of CEF during inhibition and set-shifting processes. Thirty healthy educated subjects were selected. Event-Related Potential (ERP) related to visual inhibition and set-shifting task was collected using 32 channel EEG system. Activation of those ERPs components was analyzed using amplitudes of positive and negative peaks. Experiment was controlled using certain parametric constraints to judge behavior, based on average responses in order to establish relationship between ERP and local area of brain activation and represented using standardized low resolution brain electromagnetic tomography. The average score of correct responses was higher for inhibition task (87.5%) as compared to set-shifting task (59.5%). The peak amplitude of neuronal activity for inhibition task was lower compared to set-shifting task in fronto-parieto-central regions. Hence this proposed paradigm and technique can be used to measure inhibition and set-shifting neuronal processes in understanding pathological central executive functioning in patients with neuro-psychiatric disorders.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"43 1","pages":"43-52"},"PeriodicalIF":0.0,"publicationDate":"2016-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90604528","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
Image Processing Based Girth Monitoring and Recording System for Rubber Plantations 基于图像处理的橡胶园周长监测记录系统
Signal and image processing : an international journal Pub Date : 2015-02-28 DOI: 10.5121/SIPIJ.2015.6103
C. Thilakarathne, Padmika Bhanusri, Tharindu Randeny, H. Rupasinghe, C. Kulasekere
{"title":"Image Processing Based Girth Monitoring and Recording System for Rubber Plantations","authors":"C. Thilakarathne, Padmika Bhanusri, Tharindu Randeny, H. Rupasinghe, C. Kulasekere","doi":"10.5121/SIPIJ.2015.6103","DOIUrl":"https://doi.org/10.5121/SIPIJ.2015.6103","url":null,"abstract":"Measuring the girth and continuous monitoring of the increase in girth is one of the most important processes in rubber plantations since identification of girth deficiencies would enable planters to take corrective actions to ensure a good yield from the plantation. This research paper presents an image processing based girth measurement & recording system that can replace existing manual process in an efficient and economical manner. The system uses a digital image of the tree which uses the current number drawn on the tree to identify the tree number & its width. The image is threshold first & then filtered out using several filtering criterion to identify possible candidates for numbers. Identified blobs are then fed to the Tesseract OCR for number recognition. Threshold image is then filtered again with different criterion to segment out the black strip drawn on the tree which is then used to calculate the width of the tree using calibration parameters. Once the tree number is identified & width is calculated the girth the measured girth of the tree is stored in the data base under the identified tree number. The results obtained from the system indicated significant improvement in efficiency & economy for main plantations. As future developments we are proposing a standard commercial system for girth measurement using standardized 2D Bar Codes as tree identifiers","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"1 1","pages":"33-44"},"PeriodicalIF":0.0,"publicationDate":"2015-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79814848","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
Hybrid LWT-SVD Watermarking Optimized Using Metaheuristic Algorithms along with Encryption for Medical Image Security 基于元启发式算法和加密的混合LWT-SVD水印优化医学图像安全
Signal and image processing : an international journal Pub Date : 2015-02-28 DOI: 10.5121/SIPIJ.2015.6106
H. VenugopalReddyC, P. Siddaiah
{"title":"Hybrid LWT-SVD Watermarking Optimized Using Metaheuristic Algorithms along with Encryption for Medical Image Security","authors":"H. VenugopalReddyC, P. Siddaiah","doi":"10.5121/SIPIJ.2015.6106","DOIUrl":"https://doi.org/10.5121/SIPIJ.2015.6106","url":null,"abstract":"Medical image security provides challenges and opportunities, watermarking and encryption of medical images provides the necessary control over the flow of medical information. In this paper a dual security approach is employed .A medical image is considered as watermark and is watermarked inside a natural image. This approach is to wean way the potential attacker by disguising the medical image as a natural image. To further enhance the security the watermarked image is encrypted using encryption algorithms. In this paper a multi–objective optimization approach optimized using different metaheuristic approaches like Genetic Algorithm (GA), Differential Evolution ( DE) and Bacterial Foraging Optimization (BFOA) is proposed. Such optimization helps in preserving the structural integrity of the medical images, which is of utmost importance. The water marking is proposed to be implemented using both Lifted Wavelet Transforms (LWT) and Singular Value Decomposition (SVD) technique. The encryption is done using RSA and AES encryption algorithms. A Graphical User Interface (GUI) which enables the user to have ease of operation in loading the image, watermark it, encrypt it and also retrieve the original image whenever necessary is also designed and presented in this paper.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"40 1","pages":"75-95"},"PeriodicalIF":0.0,"publicationDate":"2015-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89819272","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 Modified Distance Regularized Level Set Model for Liver Segmentation from CT Images 一种改进的距离正则化水平集模型用于CT图像肝脏分割
Signal and image processing : an international journal Pub Date : 2015-02-28 DOI: 10.5121/SIPIJ.2015.6101
Nuseiba M. Altarawneh, S. Luo, B. Regan, Changming Sun
{"title":"A Modified Distance Regularized Level Set Model for Liver Segmentation from CT Images","authors":"Nuseiba M. Altarawneh, S. Luo, B. Regan, Changming Sun","doi":"10.5121/SIPIJ.2015.6101","DOIUrl":"https://doi.org/10.5121/SIPIJ.2015.6101","url":null,"abstract":"Segmentation of organs from medical images is an active and interesting area of research. Liver segmentation incurs more challenges and difficulties compared with segmentation of other organs. In this paper we demonstrate a liver segmentation method for computer tomography images. We revisit the distance regularization level set (DRLS) model by deploying new balloon forces. These forces control the direction of the evolution and slow down the evolution process in regions that are associated with weak or without edges. The newly added balloon forces discourage the evolving contour from exceeding the liver boundary or leaking at a region that is associated with a weak edge, or does not have an edge. Our experimental results confirm that the method yields a satisfactory overall segmentation outcome. Comparing with the original DRLS model, our model is proven to be more effective in handling oversegmentation problems.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"42 1","pages":"01-11"},"PeriodicalIF":0.0,"publicationDate":"2015-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87264757","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: 14
Automatic Meal Inspection System Using LBP-HF Feature for Central Kitchen 采用LBP-HF功能的中央厨房自动检餐系统
Signal and image processing : an international journal Pub Date : 2015-02-28 DOI: 10.5121/SIPIJ.2015.6105
Y. Jiang, Ho-Hsin Lee, C. Lien, Chun-Feng Tai, Pi-Chun Chu, Ting-Wei Yang
{"title":"Automatic Meal Inspection System Using LBP-HF Feature for Central Kitchen","authors":"Y. Jiang, Ho-Hsin Lee, C. Lien, Chun-Feng Tai, Pi-Chun Chu, Ting-Wei Yang","doi":"10.5121/SIPIJ.2015.6105","DOIUrl":"https://doi.org/10.5121/SIPIJ.2015.6105","url":null,"abstract":"This paper proposes an intelligent and automatic meal inspection system which can be applied to the meal inspection for the application of central kitchen automation. The diet specifically designed for the patients are required with providing personalized diet such as low sodium intake or some necessary food. Hence, the proposed system can benefit the inspection process that is often performed manually. In the proposed system, firstly, the meal box can be detected and located automatically with the vision-based method and then all the food ingredients can be identified by using the color and LBP-HF texture features. Secondly, the quantity for each of food ingredient is estimated by using the image depth information. The experimental results show that the meal inspection accuracy can approach 80%, meal inspection efficiency can reach1200ms, and the food quantity accuracy is about 90%. The proposed system is expected to increase the capacity of meal supply over 50% and be helpful to the dietician in the hospital for saving the time in the diet inspection process.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"33 1","pages":"61-74"},"PeriodicalIF":0.0,"publicationDate":"2015-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88154145","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
Advances in automatic tuberculosis detection in chest x-ray images 胸部x线图像结核自动检测的研究进展
Signal and image processing : an international journal Pub Date : 2014-12-31 DOI: 10.5121/SIPIJ.2014.5604
Wai Yan Nyein Naing, Z. Htike
{"title":"Advances in automatic tuberculosis detection in chest x-ray images","authors":"Wai Yan Nyein Naing, Z. Htike","doi":"10.5121/SIPIJ.2014.5604","DOIUrl":"https://doi.org/10.5121/SIPIJ.2014.5604","url":null,"abstract":"Tuberculosis (TB) is very dangerous and rapidly spread disease in the world. In the investigating cases for suspected tuberculosis (TB), chest radiography is not only the key techniques of diagnosis based on the medical imaging but also the diagnostic radiology. So, Computer aided diagnosis (CAD) has been popular and many researchers are interested in this research areas and different approaches have been proposed for the TB detection and lung decease classification. In this paper, the medical background history of TB decease in chest X-rays and a survey of the various approaches in TB detection and classification are presented. The literature in the related methods is surveyed papers in this research area until now 2014.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"59 1","pages":"41-53"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84571451","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: 17
IMAGE COMPRESSION USING EMBEDDED ZERO TREE WAVELET 图像压缩使用嵌入零树小波
Signal and image processing : an international journal Pub Date : 2014-12-31 DOI: 10.5121/SIPIJ.2014.5603
Raid A.M, K. W.M, El-dosuky M.A, W. Ahmed
{"title":"IMAGE COMPRESSION USING EMBEDDED ZERO TREE WAVELET","authors":"Raid A.M, K. W.M, El-dosuky M.A, W. Ahmed","doi":"10.5121/SIPIJ.2014.5603","DOIUrl":"https://doi.org/10.5121/SIPIJ.2014.5603","url":null,"abstract":"Compressing an image is significantly different than compressing raw binary data. compressing images is used by this different compression algorithm. Wavelet transforms used in Image compression methods to provide high compression rates while maintaining good image quality. Discrete Wavelet Transform (DWT) is one of the most common methods used in signal and image compression .It is very powerful compared to other transform because its ability to represent any type of signals both in time and frequency domain simultaneously. In this paper, we will moot the use of Wavelet Based Image compression algorithmEmbedded Zerotree Wavelet (EZW). We will obtain a bit stream with increasing accuracy from ezw algorithm because of basing on progressive encoding to compress an image into . All the numerical results were done by using matlab coding and the numerical analysis of this algorithm is carried out by sizing Peak Signal to Noise Ratio (PSNR) and Compression Ratio (CR) for standard Lena Image .Experimental results beam that the method is fast, robust and efficient enough to implement it in still and complex images with significant image compression.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"23 1","pages":"33-39"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76453096","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: 7
Fusion of Fingerprint and Age Biometric for Gender Classification Using Frequency and Texture Analysis 基于频率和纹理分析的指纹和年龄生物特征融合性别分类
Signal and image processing : an international journal Pub Date : 2014-12-31 DOI: 10.5121/SIPIJ.2014.5606
Gornale S.S, R. Kruthi
{"title":"Fusion of Fingerprint and Age Biometric for Gender Classification Using Frequency and Texture Analysis","authors":"Gornale S.S, R. Kruthi","doi":"10.5121/SIPIJ.2014.5606","DOIUrl":"https://doi.org/10.5121/SIPIJ.2014.5606","url":null,"abstract":"Classification of gender from fingerprints is one of the important steps in forensic anthropology. This forensic anthropology is used to identify the gender of a criminal in order to minimize the suspects list of search. A very few researcher have worked on gender classification using fingerprints and have gain the competitive results. In this work we are trying to fuse the fingerprint and age biometrics for gender classification. The real fingerprints were collected from different age groups such as 15-20 years and 2060 years of the rural and urban people. According to this experimental observation soft biometric information can be used significantly to improve the recognition performance of biometric system. The overall performance of the proposed method is found to be satisfactory and more competitive.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"34 1","pages":"75-85"},"PeriodicalIF":0.0,"publicationDate":"2014-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81808169","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: 7
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