2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)最新文献_第6页

A SIFT-Based Forest Fire Detection Framework Using Static Images 基于sift的静态图像森林火灾检测框架

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631711

Nargess Ghassempour, J. Zou, Yaping He

引用次数: 7

Analysis of Variance of Opinion Scores for MPEG-4 Scalable and Advanced Video Coding MPEG-4可扩展和高级视频编码意见评分方差分析

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631713

T. Chu, H. Zepernick, V. Sundstedt

{"title":"Analysis of Variance of Opinion Scores for MPEG-4 Scalable and Advanced Video Coding","authors":"T. Chu, H. Zepernick, V. Sundstedt","doi":"10.1109/ICSPCS.2018.8631713","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631713","url":null,"abstract":"In this paper, we conduct an analysis of variance (ANOVA) on opinion scores for MPEG-4 scalable video coding (SVC) and advanced video coding (AVC) standards. This work resorts on a publicly available database providing opinion scores from subjective experiments for several scenarios such as different bit rates and resolutions. In particular, ANOVA is used for statistical hypothesis testing to compare two or more sets of opinion scores instead of being constrained to pairs of sets of opinion scores as would be the case for t-tests. As the ANOVA tests of the different scenarios are performed for mean opinion scores (MOS), box plots are also provided in order to assess the distribution of the opinion scores around the median. It is shown that the opinion scores given to the reference videos in SVC and AV C for different resolutions are statistically significantly similar regardless of the content. Further, for the opinion scores of the considered database, the ANOVA tests support the hypothesis that AVC generally outperforms SVC although the performance difference may be less pronounced for higher bit rates. This work also shows that additional insights on the results of subjective experiments can be obtained by extending the analysis of opinion scores beyond MOS to ANOVA tests and box plots.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115919665","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

IQ Imbalance Estimation Scheme with Weighting Factor in OFDM Direct Conversion Receivers 基于加权因子的OFDM直接转换接收机IQ不平衡估计方法

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631771

Yuto Masuda, M. Inamori

引用次数: 0

Background Extraction Based on a New Calibrator in Radar Cross Section Measurements 基于新型雷达截面测量校准器的背景提取

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631729

Liya Liang, Xiaojian Xu

引用次数: 1

On the Positioning of Moderately Significant Bit Data Hiding in High-Definition Images 高清晰度图像中中等有效位数据隐藏的定位研究

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631715

D. Tran, H. Zepernick, T. Chu

{"title":"On the Positioning of Moderately Significant Bit Data Hiding in High-Definition Images","authors":"D. Tran, H. Zepernick, T. Chu","doi":"10.1109/ICSPCS.2018.8631715","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631715","url":null,"abstract":"Mobile services have seen a shift from voice services toward visual stimuli-based services ranging from mobile imaging over mobile gaming to upcoming mobile extended reality applications. In this paper, given the increased resolutions of the related mobile multimedia formats, we propose and examine positioning strategies for light-weight data hiding of secret images in moderately significant bits of high-definition (HD) cover images. Apart from linear and random positioning, visual attention mechanisms of the human visual system are addressed by separately utilizing either the background or center of the HD cover image for data hiding. A performance assessment of these positioning strategies is conducted in terms of the peak-signal-to-noise ratio (PSNR), structural similarity (SSIM) index, and visual information fidelity (VIF). It is shown that HD cover images indeed can carry more than a single secret image until noticeable quality loss is observed. Further, it is revealed that linear positioning of secret images in the whole, background, or center of HD cover images outperforms random positioning. As for the utilized performance metrics, it has been observed that PSNR cannot differentiate among the positioning strategies as it measures pixel-by-pixel differences and hence removes the impact of the position of the hidden data. As for the two quality metrics, compared to the SSIM index, VIF is found to stronger differentiate among the performance of the considered positioning strategies.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125613286","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

Design and Evaluation of Information Bottleneck LDPC Decoders for Software Defined Radios 软件无线电LDPC解码器的信息瓶颈设计与评价

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631719

J. Lewandowsky, G. Bauch, M. Tschauner, Peter Oppermann

{"title":"Design and Evaluation of Information Bottleneck LDPC Decoders for Software Defined Radios","authors":"J. Lewandowsky, G. Bauch, M. Tschauner, Peter Oppermann","doi":"10.1109/ICSPCS.2018.8631719","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631719","url":null,"abstract":"The Information Bottleneck method allows to construct information-optimum message passing decoders for low-density parity-check codes. In such decoders lookup tables replace the classical node operations of the variable and the check nodes. These lookup tables are designed using the Information Bottleneck principle of maximizing the relevant information. Unlike state-of-the-art decoders which use real valued log-likelihood ratios for decoding, the considered decoders do not process any real values, but only quantization indices. Nevertheless, they have performance extremely close to belief propagation decoding. Since hardware representation of unsigned integers is efficient and lookup table implementations have low complexity, it is reasonable to assume that the designed decoders offer advantages over their conventional counterparts in practice. In this paper, we evaluate, quantify and discuss these advantages in a practical experiment. Our focus lies on a software defined radio application, where the channel decoder is implemented on a digital signal processor. We present several implementations of the considered decoders and compare them with state-of-the-art decoders. Our results show considerable gains of the Information Bottleneck decoders in terms of bit error rate performance and net decoding throughput.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132367893","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

Contrast Enhancement of Dithered Images Using Complex Wavelets and Novel Amplification Factors 利用复杂小波和新型放大因子增强抖动图像的对比度

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631744

Sunpreet Sharma, J. Zou, G. Fang

引用次数: 4

A Novel Method for Physical-Layer Authentication via Channel State Information 一种基于信道状态信息的物理层认证新方法

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631736

S. Lord, J. Roth, J. McEachen, M. Tummala

引用次数: 1

Interference Elimination Scheme of Wireless Power Transmission for IEEE 802.11 ah IEEE 802.11 ah无线电力传输的干扰消除方案

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631782

A. Mori, Assyfa Ariffin, H. Chung, M. Inamori

引用次数: 0

GPU Synthesis of RF Channeliser Outputs for a Variable Bandwidth Microwave Digital Receiver 可变带宽微波数字接收机射频信道器输出的GPU综合

2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS) Pub Date : 2018-12-01 DOI: 10.1109/ICSPCS.2018.8631751

Simon Faulkner, Simon Herfurth, T. Lamahewa, S. D. Elton

{"title":"GPU Synthesis of RF Channeliser Outputs for a Variable Bandwidth Microwave Digital Receiver","authors":"Simon Faulkner, Simon Herfurth, T. Lamahewa, S. D. Elton","doi":"10.1109/ICSPCS.2018.8631751","DOIUrl":"https://doi.org/10.1109/ICSPCS.2018.8631751","url":null,"abstract":"This paper describes the design and implementation of a reconfigurable, software-defined synthesiser, when used in conjunction with a spectral channeliser forms an adaptive intercept receiver for radio frequency (RF) spectrum sensing applications. The software-based design of the synthesiser targets a parallel, multi-core architecture in the form of a graphics processor unit (GPU). Our implementation provides maximum flexibility in terms of the bandwidth and signal duration which can be synthesised. Specifically, the design supports the synthesis of any number of frequency channels that are output from the channeliser front-end and this is achieved on a signal-to-signal basis. Multiple NVIDIA Tesla V100 GPUs were used to benchmark the performance of our GPU synthesis design. A number of representative signal types with variable bandwidth and duration were input into the GPU synthesis framework and the performance measured by computing the maximum throughput of synthesised signals per second. Our analysis also included a comparison of the GPU implementation with that of a multithreaded central processing unit (CPU) implementation. Our GPU implementation was able to achieve a 100× improvement in throughput performance on a single GPU for one of the test signals, and a minimum of 25× improvement in throughput performance for all of the test signals when compared to the CPU implementation.","PeriodicalId":179948,"journal":{"name":"2018 12th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117331452","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