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Coefficients training methods for image and video quality measures 图像和视频质量度量的系数训练方法
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294562
Chen Gao, K. Panetta, S. Agaian
{"title":"Coefficients training methods for image and video quality measures","authors":"Chen Gao, K. Panetta, S. Agaian","doi":"10.1109/IST.2015.7294562","DOIUrl":"https://doi.org/10.1109/IST.2015.7294562","url":null,"abstract":"Combining multiple color image attribute measures by linear addition has been shown to be an effective method in evaluating color image and video quality. Therefore, appropriate selection of the linear combination coefficients determines the performance of the image quality measure. In this paper, training methods of obtaining the linear combination coefficients are discussed for two practical applications: (1) for image processing applications where images before and after processing have the same source; and (2) for video processing purpose where consecutive frames have different contents and suffer from different types of distortions. With the obtained linear combination coefficients, the overall image quality measure Color Quality Measure (CQM) is shown to be effective in benchmarking the qualities of images and video frames in terms that it has high correlations with subjective evaluation Mean Opinion Scores (MOS).","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116604784","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
Development of 36M-pixel micro-CT using digital single-lens reflex camera 36m像素数码单反相机微型ct的研制
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294461
K. Umetani, Y. Kawata, N. Niki, H. Itoh
{"title":"Development of 36M-pixel micro-CT using digital single-lens reflex camera","authors":"K. Umetani, Y. Kawata, N. Niki, H. Itoh","doi":"10.1109/IST.2015.7294461","DOIUrl":"https://doi.org/10.1109/IST.2015.7294461","url":null,"abstract":"A high-resolution, large field-of-view micro-CT system is indispensable for the visualization of fine three-dimensional (3-D) structures of large human lung specimens. It drastically increases the overall number of detector pixels. At the SPring-8 synchrotron radiation facility, a micro-CT system based on a 10M-pixel CCD camera was developed over a decade ago for 3-D specimen imaging of centimeter-sized objects with approximately 7 μm spatial resolution and a field of view of 23.6 mm width × 15.5 mm height. Recent studies require higher spatial resolution and wider field-of-view systems. Detectors with a spatial resolution of around 5 μm can visualize capillaries in the lung specimens. Accordingly, a wide field-of-view micro-CT system with spatial resolution of about 5 μm is under development using a 36M-pixel digital single-lens reflex camera, for 3-D microstructural analysis of the pulmonary lobular anatomy to quantitatively describe relation between the architectures and abnormalities.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128078548","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
Color characteristics for the evaluation of suspended sediments 评价悬浮沉积物的颜色特征
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294574
K. Moirogiorgou, S. Nerantzaki, G. Livanos, M. Antonakakis, Nikolaos P. Nikolaidis, E. Petrakis, A. Savakis, G. Giakos, M. Zervakis, K. Mania
{"title":"Color characteristics for the evaluation of suspended sediments","authors":"K. Moirogiorgou, S. Nerantzaki, G. Livanos, M. Antonakakis, Nikolaos P. Nikolaidis, E. Petrakis, A. Savakis, G. Giakos, M. Zervakis, K. Mania","doi":"10.1109/IST.2015.7294574","DOIUrl":"https://doi.org/10.1109/IST.2015.7294574","url":null,"abstract":"This study focuses on a significant issue of the environmental monitoring application area, which is the suspended sediment concentration estimation. More specifically, the purpose of the current work is to provide a new non-intrusive way to estimate the suspended sediment (SS) distribution. The proposed methodology uses the color characteristics of river flow images and provides a high correlation factor with the suspended sediment measurements. In our opinion, the importance of the current work derives from the fact that it provides an alternative and effective way of estimating SS distribution rather as opposed to the conventional method that requires human presence, especially if we consider the difficulty of taking measurements of the river pollution during flush flood events when the sediment distribution is increased and is directly related to water quality.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114691818","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: 2
Image reconstruction for electrical resistance tomography based on extended sensitivity matrix 基于扩展灵敏度矩阵的电阻层析成像图像重建
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294467
Jiamin Ye, M. Mao, Jiaolong Zhang, Haigang Wang, Wuqiang Yang
{"title":"Image reconstruction for electrical resistance tomography based on extended sensitivity matrix","authors":"Jiamin Ye, M. Mao, Jiaolong Zhang, Haigang Wang, Wuqiang Yang","doi":"10.1109/IST.2015.7294467","DOIUrl":"https://doi.org/10.1109/IST.2015.7294467","url":null,"abstract":"Image reconstruction for electrical resistance tomography is an ill-posed and ill-conditioned problem. To enhance the image quality, a regularized method should be applied for the image reconstruction. However, most of the existing algorithms are based on a sensitivity matrix calculated according to each pixel. In this paper, a new extended sensitivity matrix is designed and used for image reconstruction. The extended sensitivity matrix is consisting of a lot of block bases of mixed sizes. An image reconstruction algorithm for electrical resistance tomography based on the extended sensitivity matrix and Landweber iteration is carried out. Simulation results show that the proposed method can provide a good image quality.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125864087","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 skeleton reconstruction algorithm for identifying individual fish fry in a population image 种群图像中个体鱼苗识别的骨架重建算法
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294552
Titirat Boonchuaychu, Pakaket Wattuya, W. Taparhudee
{"title":"A skeleton reconstruction algorithm for identifying individual fish fry in a population image","authors":"Titirat Boonchuaychu, Pakaket Wattuya, W. Taparhudee","doi":"10.1109/IST.2015.7294552","DOIUrl":"https://doi.org/10.1109/IST.2015.7294552","url":null,"abstract":"Due to rapid advance of computer vision technology, computer assisted image analysis starts to play an important role in several areas including aquaculture. In recent years several computer vision-based methods have been applied to many major operations, e.g. automated fish counting, inspection, and measurement. In this paper we address a problem of overlapping objects in a population image that frequently occurs when objects under investigation are allowed to move freely during operations. We proposed a new skeleton reconstruction algorithm for identifying and isolating individual objects in a cluster of overlapping objects. The algorithm re-assembles initial skeleton of an object cluster based on combination of edge and geometric measures, in order to form correct skeletons of individual objects in a cluster. Skeletons produced by our algorithm will be used as a basis for further automated inspection and measurement tasks. In this paper we apply our algorithm in a field of aquaculture for automated identifying individual fish fry in an overlapping-fry cluster. Our algorithm can achieve 93.33 percent accuracy for skeleton reconstruction of each individual fry in a cluster of 2-7 overlapping fry. The results also show the effectiveness of our algorithm in dealing with various overlapping patterns.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126564876","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: 2
A modified L-curve method for choosing regularization parameter in electrical resistance tomography 电阻层析成像中正则化参数选择的改进l曲线方法
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294469
Yang Pei, Yanbin Xu, F. Dong
{"title":"A modified L-curve method for choosing regularization parameter in electrical resistance tomography","authors":"Yang Pei, Yanbin Xu, F. Dong","doi":"10.1109/IST.2015.7294469","DOIUrl":"https://doi.org/10.1109/IST.2015.7294469","url":null,"abstract":"Regularization methods are widely used in dealing with the ill-posed inverse problem of electrical resistance tomography (ERT), especially the Tikhonov method. A proper choice of regularization parameter is crucial to produce an efficient regularization solution. As a regularization parameter choice method, L-curve method is popular for its simpleness and intuition. However there is no guarantee that the method can always determine a proper parameter for all situations of ERT. The investigation on those failed situations shows that a new corner point often appears on the curve and the parameter corresponding to the new corner point can obtain a better solution than the one corresponding to the traditional global corner point. Therefore a modified L-curve method is proposed based on the new corner point. Moreover two strategies are provided to implement the modified method: one computes the new corner point by means of the second-order differential of L-curve, and another computes the new corner point with the help of the curvature of L-curve. The modified L-curve method is verified by numerical simulations of some typical distributions in ERT. And the results indicate that the modified method can achieve an efficient solution and implement the image reconstruction where the traditional L-curve method cannot. The modified L-curve method extends the application of L-curve in the field of choosing regularization parameter and can also be applied in other kinds of tomography.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124401047","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
Excitation strategy for three-dimensional electrical capacitance tomography sensor 三维电容层析传感器的激励策略
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294468
M. Mao, Jiamin Ye, Haigang Wang, Jiaolong Zhang, Wuqiang Yang
{"title":"Excitation strategy for three-dimensional electrical capacitance tomography sensor","authors":"M. Mao, Jiamin Ye, Haigang Wang, Jiaolong Zhang, Wuqiang Yang","doi":"10.1109/IST.2015.7294468","DOIUrl":"https://doi.org/10.1109/IST.2015.7294468","url":null,"abstract":"The multiple electrode excitation strategy has been applied in two-dimensional electrical capacitance tomography (ECT) sensors to improve the image quality. The aim of this research is to investigate the performance of multi-electrode excitation strategy in three-dimensional (3D) ECT sensor. Three different excitation strategies are considered for comparison, including the single-electrode excitation, dual-electrode excitation in the same plane and dual-electrode excitation in different planes. The optimal number of iterations based on the maximum correlation coefficients is used to reconstruct the images using simulation data by Landweber iteration algorithm. Simulation results show that the single-electrode excitation strategy outperforms the other two strategies.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116472174","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
Improved directional weighted interpolation method combination with anti-aliasing FIR filter 结合抗混叠FIR滤波器的改进方向加权插值方法
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294572
Xuyi Jiang, Xiangdong Chen, Liwen He, Gwanggil Jeon
{"title":"Improved directional weighted interpolation method combination with anti-aliasing FIR filter","authors":"Xuyi Jiang, Xiangdong Chen, Liwen He, Gwanggil Jeon","doi":"10.1109/IST.2015.7294572","DOIUrl":"https://doi.org/10.1109/IST.2015.7294572","url":null,"abstract":"In this paper, we present an improved directional weighted interpolation method for single-sensor camera imaging. By observing the fact that the conventional directional weighted interpolation methods are based on unreliable assumptions using spectral correlation, a contribution of this work is made using an anti-aliasing finite impulse response filter to improve the interpolation accuracy by exploiting robust spectral correlation. We also make a contribution towards refining the interpolation result by using the gradient inverse weighted filtering method. An experimental analysis of images revealed that our proposed algorithm provided superior performance in terms of both objective and subjective image quality compared to conventional directional weighted Demosaicking algorithms. Our implementation has very low complexity and is therefore well suited for real-time applications.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"618 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116329692","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
Spectral data self-organization based on bootstrapping and clustering approaches 基于自举和聚类方法的光谱数据自组织
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294546
Ioanna Vourlaki, G. Livanos, M. Zervakis, C. Balas, G. Giakos
{"title":"Spectral data self-organization based on bootstrapping and clustering approaches","authors":"Ioanna Vourlaki, G. Livanos, M. Zervakis, C. Balas, G. Giakos","doi":"10.1109/IST.2015.7294546","DOIUrl":"https://doi.org/10.1109/IST.2015.7294546","url":null,"abstract":"This study introduces a novel technique for self-organizing data, without any prior knowledge on their statistical distribution, fusing efficient strategies from clustering and resampling. The proposed methodology aims at searching for hidden characteristics within the processed dataset and revealing additional data structures or subclasses that can be utilized for identifying irregular groups that are of particular importance in disease modeling. The performance evaluation of the presented algorithm to biomedical data from cervical cancer is tested and analyzed on sample vectors representing the temporal response of tissue areas obtained through multispectral imaging. The results of this study show that stratified, repeated applications of simple clustering schemes can effectively organize big data, giving rise to the application of the proposed method for tissue classification for enabling accurate and early disease diagnosis.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116830915","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 novel front-end electronic system with full-customized readout ASIC and post digital pulse shaping for CZT-based PET imaging 一种新颖的前端电子系统，具有全定制读出ASIC和后数字脉冲整形，用于基于cts的PET成像
2015 IEEE International Conference on Imaging Systems and Techniques (IST) Pub Date : 2015-10-08 DOI: 10.1109/IST.2015.7294459
W. Gao, X. Li, J. Yin, C. Li, D. Gao, Y. Hu
{"title":"A novel front-end electronic system with full-customized readout ASIC and post digital pulse shaping for CZT-based PET imaging","authors":"W. Gao, X. Li, J. Yin, C. Li, D. Gao, Y. Hu","doi":"10.1109/IST.2015.7294459","DOIUrl":"https://doi.org/10.1109/IST.2015.7294459","url":null,"abstract":"This paper presents a novel front-end electronic system dedicated to CZT detectors for positron-emission tomography (PET) imaging applications. It is implemented by full-customized readout application-specific integrated circuits with a post digital pulse shaping algorithm in FPGA. In the front-end readout ASIC, a preamplifier, a variable gain amplifier, a multiple-point sampling ramp ADC are integrated together. The digital CR-RC shaping and the digital trapezoidal shaping are implemented in a FPGA. A prototype front-end electronic board is implemented. Experiments results have been obtained. The detection range of the gamma ray is from 11.2 keV to 550 keV. The linearity of the output voltage is less than 1 %. The test results show that the proposed front-end electronics is appropriable for PET imaging applications.","PeriodicalId":186466,"journal":{"name":"2015 IEEE International Conference on Imaging Systems and Techniques (IST)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127782908","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
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