Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465572
N. Ti, Long Bao Le
In this paper, the computation offloading problem for the hierarchical fog-cloud computing (FCC) system with unmanned aerial vehicles (UAVs) is studied. The hierarchical FCC, which exploits both centralized and distributed computing architectures, is very promising to support computation offloading in emerging computation-demanding mobile applications. In our design, UAVs integrating computing platforms act as small distributed clouds while the macro base station (BS) integrates a more powerful central cloud server. Furthermore, the multiple input multiple output (MIMO) technology is employed for data communication. We assume that mobile users (UEs) and (UAVs) can change their locations over time and we consider the joint task offloading, user-cloud/cloudlet association, transmit power allocation, and path planning to minimize the total weighted consumed power of the system. To tackle the underlying non-convex mixed integer non-linear program (MINLP), we propose an iterative two-phase algorithm. Specifically, we iteratively solve the user-cloud/cloudlet association problem in the first phase and address the joint resource allocation, path planning problem in the second phase. Furthermore, we employ the difference of convex (DC) optimization method in the second phase to approximate the non-convex bilinear functions and propose to transform the non-convex INLP to the integer linear program (ILP) in the first phase. Numerical studies confirm that the proposed design for the FCC architecture achieves great performance benefits for executing mobile computation tasks.
{"title":"Joint Resource Allocation, Computation Offloading, and Path Planning for UAV Based Hierarchical Fog-Cloud Mobile Systems","authors":"N. Ti, Long Bao Le","doi":"10.1109/CCE.2018.8465572","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465572","url":null,"abstract":"In this paper, the computation offloading problem for the hierarchical fog-cloud computing (FCC) system with unmanned aerial vehicles (UAVs) is studied. The hierarchical FCC, which exploits both centralized and distributed computing architectures, is very promising to support computation offloading in emerging computation-demanding mobile applications. In our design, UAVs integrating computing platforms act as small distributed clouds while the macro base station (BS) integrates a more powerful central cloud server. Furthermore, the multiple input multiple output (MIMO) technology is employed for data communication. We assume that mobile users (UEs) and (UAVs) can change their locations over time and we consider the joint task offloading, user-cloud/cloudlet association, transmit power allocation, and path planning to minimize the total weighted consumed power of the system. To tackle the underlying non-convex mixed integer non-linear program (MINLP), we propose an iterative two-phase algorithm. Specifically, we iteratively solve the user-cloud/cloudlet association problem in the first phase and address the joint resource allocation, path planning problem in the second phase. Furthermore, we employ the difference of convex (DC) optimization method in the second phase to approximate the non-convex bilinear functions and propose to transform the non-convex INLP to the integer linear program (ILP) in the first phase. Numerical studies confirm that the proposed design for the FCC architecture achieves great performance benefits for executing mobile computation tasks.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126493957","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465752
Phuong T. K. Dinh, Linh T. T. Dinh, Hoan V. Tran, C. M. Duong, L. Lanante, M. Nguyen, H. Ochi
In this paper, a new architecture of a multi-mode Fast Fourier Transform hardware for IEEE 802.11ax WLAN standard is presented. The proposed architecture is based on Radix-2 Multipath Delay Commutator (MDC), Radix-22 and Radix 24 Single-path Delay Feedback(SDF) stages. To optimize the throughput and area of the FFT hardware, we applied two design techniques such as compression of redundant twiddle factors, and optimization of twiddle factor multiplication. In FPGA implementation using Altera Stratix IV EP4SGX530KH40C3, the proposed FFT achieved 1.2 GSamples/s throughput and met the requirements of the 802.11ax standard. The synthesis results show that the proposed circuit is 6.19% lower latency and 30.2% lower area compared to a recently presented work while maintaining higher working frequency.
本文提出了一种适用于IEEE 802.11ax无线局域网标准的多模快速傅立叶变换硬件结构。所提出的架构基于Radix-2多路径延迟换向器(MDC)， Radix-22和Radix 24单路径延迟反馈(SDF)阶段。为了优化FFT硬件的吞吐量和面积，我们采用了冗余旋转因子压缩和旋转因子乘法优化两种设计技术。在Altera Stratix IV EP4SGX530KH40C3的FPGA实现中，所提出的FFT实现了1.2 GSamples/s的吞吐量，满足802.11ax标准的要求。综合结果表明，该电路在保持较高的工作频率的同时，延迟降低6.19%，面积降低30.2%。
{"title":"Hardware Design and Optimization of Multimode Pipeline Based FFT for IEEE 802.11ax WLAN Devices","authors":"Phuong T. K. Dinh, Linh T. T. Dinh, Hoan V. Tran, C. M. Duong, L. Lanante, M. Nguyen, H. Ochi","doi":"10.1109/CCE.2018.8465752","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465752","url":null,"abstract":"In this paper, a new architecture of a multi-mode Fast Fourier Transform hardware for IEEE 802.11ax WLAN standard is presented. The proposed architecture is based on Radix-2 Multipath Delay Commutator (MDC), Radix-22 and Radix 24 Single-path Delay Feedback(SDF) stages. To optimize the throughput and area of the FFT hardware, we applied two design techniques such as compression of redundant twiddle factors, and optimization of twiddle factor multiplication. In FPGA implementation using Altera Stratix IV EP4SGX530KH40C3, the proposed FFT achieved 1.2 GSamples/s throughput and met the requirements of the 802.11ax standard. The synthesis results show that the proposed circuit is 6.19% lower latency and 30.2% lower area compared to a recently presented work while maintaining higher working frequency.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132411399","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465571
Trang Nguyen, Y. Jang
This paper presents technical specifications and implementation guidance for an Optical Camera Communication PHY mode within the ongoing IEEE 802.15.7m standard. Herein, a new design of the tri-color-band screen code called Asynchronous Quick Link (A-QL) along with its novel technical features is reviewed. The configuration for communications is performed via PHY PIB attributes, a promising software-based configuration. Particular demonstration achieving BER 10−5 within 3m distance is disclosed.
本文提出了一种符合现行IEEE 802.15.7m标准的光学相机通信PHY模式的技术规范和实现指南。本文介绍了一种新的三色带屏幕编码——异步快速链接(异步Quick Link, a - ql)及其新技术特点。通信配置是通过PHY PIB属性执行的，这是一种很有前途的基于软件的配置。公开了在3m距离内实现BER 10−5的具体演示。
{"title":"Reliable Software-Defined Optical Camera Communication over Screen","authors":"Trang Nguyen, Y. Jang","doi":"10.1109/CCE.2018.8465571","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465571","url":null,"abstract":"This paper presents technical specifications and implementation guidance for an Optical Camera Communication PHY mode within the ongoing IEEE 802.15.7m standard. Herein, a new design of the tri-color-band screen code called Asynchronous Quick Link (A-QL) along with its novel technical features is reviewed. The configuration for communications is performed via PHY PIB attributes, a promising software-based configuration. Particular demonstration achieving BER 10−5 within 3m distance is disclosed.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131153362","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465756
N. V. Giang, Thang Manh Hoang, Hoang Xuan Thanh, Ta Thi Kim Hue
The information of an image is characterized not only by the intensity of individual pixels, but also by the correlation of intensity among pixels in the surrounding area. Recently, the complex network has become an interest topic of research in many fields including the image processing. This paper presents an approach of image analysis using the complex network. In particular, a complex network is constructed and analyzed using the data of images, i.e. entropy, intensity, and position (EIP). In the EIP method, the input image is divided into equal-sized square windows; each window is considered as a node of the complex network. Links among adjacent nodes are determined based on comparing the difference in average intensity and entropy of neighboring windows with some thresholds. The created network is analyzed using common measures of complex network.
{"title":"An Approach for Image Analysis Using Complex Network","authors":"N. V. Giang, Thang Manh Hoang, Hoang Xuan Thanh, Ta Thi Kim Hue","doi":"10.1109/CCE.2018.8465756","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465756","url":null,"abstract":"The information of an image is characterized not only by the intensity of individual pixels, but also by the correlation of intensity among pixels in the surrounding area. Recently, the complex network has become an interest topic of research in many fields including the image processing. This paper presents an approach of image analysis using the complex network. In particular, a complex network is constructed and analyzed using the data of images, i.e. entropy, intensity, and position (EIP). In the EIP method, the input image is divided into equal-sized square windows; each window is considered as a node of the complex network. Links among adjacent nodes are determined based on comparing the difference in average intensity and entropy of neighboring windows with some thresholds. The created network is analyzed using common measures of complex network.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131555257","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465724
N. Gray, Stanislav Lange, T. Zinner, Benedikt Pfaff, D. Hock
With the increasing number of devices, protocols and applications, today’s networks are becoming more and more complex. Hence, Software-defined Networking (SDN) tries to address this issue by separating the data from the control plane and by providing centralized interfaces for network configuration. As legacy devices cannot be replaced instantly due to high costs, both network segments have to be operated in coexistence with defined joints at their edges. To ensure a smooth operation, both controlling instances of these segments are required to exchange information. In this work, we design and implement a data model for storing the information needed to keep the controller and a Network Management System (NMS) synchronized, which are responsible for configuring the SDN-enabled network and the legacy devices respectively. For this, we implement and evaluate a total of three different synchronization strategies by the example of an SDN-based Bring Your Own Device (BYOD) use case.
{"title":"Evaluation of a Distributed Control Plane for Managing Heterogeneous SDN-enabled and Legacy Networks","authors":"N. Gray, Stanislav Lange, T. Zinner, Benedikt Pfaff, D. Hock","doi":"10.1109/CCE.2018.8465724","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465724","url":null,"abstract":"With the increasing number of devices, protocols and applications, today’s networks are becoming more and more complex. Hence, Software-defined Networking (SDN) tries to address this issue by separating the data from the control plane and by providing centralized interfaces for network configuration. As legacy devices cannot be replaced instantly due to high costs, both network segments have to be operated in coexistence with defined joints at their edges. To ensure a smooth operation, both controlling instances of these segments are required to exchange information. In this work, we design and implement a data model for storing the information needed to keep the controller and a Network Management System (NMS) synchronized, which are responsible for configuring the SDN-enabled network and the legacy devices respectively. For this, we implement and evaluate a total of three different synchronization strategies by the example of an SDN-based Bring Your Own Device (BYOD) use case.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131469060","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465717
H. Vu, N. Tran, L. Pham-Nguyen, Huy-Dung Han
Control Moment Gyroscope (CMG) is used extensively in many mechanical balancing systems because of its power-efficient operation. This study aims to explore the balancing capability of CMG when using the Linear–Quadratic–Gaussian (LQG) regulator. A two rigid body model physical system including a CMG and a single degree of freedom balancing object is modeled. LQG-based balancing control system with Kalman filter for estimating the state of the balancing object is developed. Simulation results show that the LQG regulator achieves better performance than the conventional PID one in terms of reaction time, noise and weight. An experimental setup shows that the CMG is able to balance a heavy system with a small tilt angle. The system can even keep balance when an external force is applied thanks to the counter torque provided by the CMG.
{"title":"LQG Regulator for Control Moment Gyroscope based Balancing System","authors":"H. Vu, N. Tran, L. Pham-Nguyen, Huy-Dung Han","doi":"10.1109/CCE.2018.8465717","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465717","url":null,"abstract":"Control Moment Gyroscope (CMG) is used extensively in many mechanical balancing systems because of its power-efficient operation. This study aims to explore the balancing capability of CMG when using the Linear–Quadratic–Gaussian (LQG) regulator. A two rigid body model physical system including a CMG and a single degree of freedom balancing object is modeled. LQG-based balancing control system with Kalman filter for estimating the state of the balancing object is developed. Simulation results show that the LQG regulator achieves better performance than the conventional PID one in terms of reaction time, noise and weight. An experimental setup shows that the CMG is able to balance a heavy system with a small tilt angle. The system can even keep balance when an external force is applied thanks to the counter torque provided by the CMG.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130590571","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465746
Truong-Xuan Do, Younghan Kim
Network function virtualization is reshaping the 5G mobile core network which is monolithic and hardware-based design into cloud-based and service-based design. In 5G mobile core network, core network functions are redesigned as virtual network functions which are classified as state management functions and stateless control and data plane functions. In such new 5G network architecture, the stateless control and data plane functions can be scalable and placed near all radio access networks. However, the placement problem of state management functions which involve more design objectives is more complicated to tackle. In this paper, we formulate a multi-objective optimization problem which takes into account the state transfer frequency and network latency as key design objectives. We propose three solutions to this problem and evaluate our solutions by changing network environment parameters.
{"title":"Latency-aware Placement for State Management Functions in Service-based 5G Mobile Core Network","authors":"Truong-Xuan Do, Younghan Kim","doi":"10.1109/CCE.2018.8465746","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465746","url":null,"abstract":"Network function virtualization is reshaping the 5G mobile core network which is monolithic and hardware-based design into cloud-based and service-based design. In 5G mobile core network, core network functions are redesigned as virtual network functions which are classified as state management functions and stateless control and data plane functions. In such new 5G network architecture, the stateless control and data plane functions can be scalable and placed near all radio access networks. However, the placement problem of state management functions which involve more design objectives is more complicated to tackle. In this paper, we formulate a multi-objective optimization problem which takes into account the state transfer frequency and network latency as key design objectives. We propose three solutions to this problem and evaluate our solutions by changing network environment parameters.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130721975","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465751
P. Zahradnik, Michal Susta, B. Simák, M. Vlcek
A novel approximating polynomial of an equiripple low-pass FIR filter is presented. It represents an optimal equiripple polynomial approximation of two constants in two disjoint intervals. It also provides an insight into the nature of the approximation problem. The developed equiripple approximation is illustrated in two examples.
{"title":"Approximation of Equiripple Low-pass FIR Filters","authors":"P. Zahradnik, Michal Susta, B. Simák, M. Vlcek","doi":"10.1109/CCE.2018.8465751","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465751","url":null,"abstract":"A novel approximating polynomial of an equiripple low-pass FIR filter is presented. It represents an optimal equiripple polynomial approximation of two constants in two disjoint intervals. It also provides an insight into the nature of the approximation problem. The developed equiripple approximation is illustrated in two examples.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133834911","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465578
Nhan Ly-Trong, Chuong Dang-Le-Bao, Quan Le-Trung
Testing new applications and network protocols in IoT systems is a challenging and time-consuming task. As a result of this, a significant number of testbed platforms have been built in recent few decades. In this paper, we present our work-in-progress IoTs testbed, namely UiTiOt, which is a Container-based testbed for wireless/IoTs networks. In contrast to many existing testbeds using real devices, we use emulation-based approach to achieve the cost-effective objectives. QOMET – a well-known network emulation tool, is deployed as a key-point component in our system to imitate the wireless IoTs communication behaviors in a wired network, in real time. Our research aims to build a testbed with large-scalability, easy-to-use, high reliability as well as the flexibility in the deployment of multiples experimental scenarios at a reasonable cost. Taking advance of cloud computing technology, our testbed deployed the experimental nodes on the OpenStack infrastructure at the University of Information Technology (UiT) to exploit the advantage ‘pay-as-you-go’ of cloud computing. In addition, Container which is a state-of-the-art virtualization platform has also been using in UiTiOt to resolve the problem of scalability. In order to show up the performance and the reliability of our testbed, several experiments were carried out and discussed in this paper.
{"title":"Towards a large-scale IoT Emulation Testbed based on Container Technology","authors":"Nhan Ly-Trong, Chuong Dang-Le-Bao, Quan Le-Trung","doi":"10.1109/CCE.2018.8465578","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465578","url":null,"abstract":"Testing new applications and network protocols in IoT systems is a challenging and time-consuming task. As a result of this, a significant number of testbed platforms have been built in recent few decades. In this paper, we present our work-in-progress IoTs testbed, namely UiTiOt, which is a Container-based testbed for wireless/IoTs networks. In contrast to many existing testbeds using real devices, we use emulation-based approach to achieve the cost-effective objectives. QOMET – a well-known network emulation tool, is deployed as a key-point component in our system to imitate the wireless IoTs communication behaviors in a wired network, in real time. Our research aims to build a testbed with large-scalability, easy-to-use, high reliability as well as the flexibility in the deployment of multiples experimental scenarios at a reasonable cost. Taking advance of cloud computing technology, our testbed deployed the experimental nodes on the OpenStack infrastructure at the University of Information Technology (UiT) to exploit the advantage ‘pay-as-you-go’ of cloud computing. In addition, Container which is a state-of-the-art virtualization platform has also been using in UiTiOt to resolve the problem of scalability. In order to show up the performance and the reliability of our testbed, several experiments were carried out and discussed in this paper.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131199552","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}
Pub Date : 2018-07-01DOI: 10.1109/CCE.2018.8465733
C. Perra, D. Giusto
A light field image describes a sampling of the intensity and direction of the light rays in space. The recent technological advances in light field camera devices are fostering the development of novel imaging application. Some of the main applications are post-processing for interactive image perspective change, image refocusing, point cloud reconstruction, and image segmentation. The problem of light field data compression is a current research topic for international standardization bodies, industries, and research institutes. This paper explores the problem of compression with respect to light field image refocusing application. The main contribution of this paper is an analysis of the performance of high-efficiency video coding in terms of peak signal to noise ratio and structural-similarity index metric versus compression ratio. The experimental analysis has been performed on a reference dataset currently used for the standardization activities of ISO/IEC JPEG Pleno and shows the tradeoff between compression and objective quality at different quantization parameters.
{"title":"An analysis of HEVC compression for light field image refocusing applications","authors":"C. Perra, D. Giusto","doi":"10.1109/CCE.2018.8465733","DOIUrl":"https://doi.org/10.1109/CCE.2018.8465733","url":null,"abstract":"A light field image describes a sampling of the intensity and direction of the light rays in space. The recent technological advances in light field camera devices are fostering the development of novel imaging application. Some of the main applications are post-processing for interactive image perspective change, image refocusing, point cloud reconstruction, and image segmentation. The problem of light field data compression is a current research topic for international standardization bodies, industries, and research institutes. This paper explores the problem of compression with respect to light field image refocusing application. The main contribution of this paper is an analysis of the performance of high-efficiency video coding in terms of peak signal to noise ratio and structural-similarity index metric versus compression ratio. The experimental analysis has been performed on a reference dataset currently used for the standardization activities of ISO/IEC JPEG Pleno and shows the tradeoff between compression and objective quality at different quantization parameters.","PeriodicalId":118716,"journal":{"name":"2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122169501","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：