2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA)最新文献_第4页

Two-dimensional non-separable quaternionic paraunitary filter banks 二维不可分四元子准酉滤波器组

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563311

N. Petrovsky, Eugene V. Rybenkov, A. Petrovsky

{"title":"Two-dimensional non-separable quaternionic paraunitary filter banks","authors":"N. Petrovsky, Eugene V. Rybenkov, A. Petrovsky","doi":"10.23919/SPA.2018.8563311","DOIUrl":"https://doi.org/10.23919/SPA.2018.8563311","url":null,"abstract":"This paper presents a novel technique of factorization for 2-D non-separable quaternionic paraunitary filter banks (2-D NSQ-PUFB). Two-dimensional factorization structures called “16in-16out” and “64in-64out” respectively for 4-channel and 8-channel <tex>$boldsymbol{Q}$</tex>-PUFB based on the proposed technique are shown. The given structures can be mapped to parallel-pipeline processor architecture with a minimum latency time <tex>$2 (boldsymbol{N}+1)$</tex> quaternion multiplication operations, where <tex>$boldsymbol{N}$</tex> is transform order of the <tex>$Q$</tex>-PUFB. The latency of parallel-pipeline processing does not depend on the size of the original image in contrast to the conventional 2-D transform. The coding gains <tex>$boldsymbol{CG_{MD}}$</tex> of 2-D non-separable Q-PUFBs for the isotropic auto-correlation function model with the correlation factor <tex>$boldsymbol{rho}=0.95$</tex> are the following: <tex>$boldsymbol{C}boldsymbol{G}_{MD}=13.4 text{dB}$</tex> for “16in-16out” structure and <tex>$boldsymbol{C}boldsymbol{G}_{MD}=15.6 text{dB}$</tex> for “64in-64out” structure.","PeriodicalId":265587,"journal":{"name":"2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126264255","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: 15

An adaptive transmission algorithm for an inertial motion capture system in the aspect of energy saving 从节能角度考虑惯性运动捕捉系统的自适应传输算法

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563433

Michal Pielka, P. Janik, M. Janik, Z. Wróbel

引用次数: 3

Suppression of distortions in signals received from Doppler sensor for vehicle speed measurement 多普勒测速传感器接收信号失真的抑制

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563403

G. Szwoch

{"title":"Suppression of distortions in signals received from Doppler sensor for vehicle speed measurement","authors":"G. Szwoch","doi":"10.23919/SPA.2018.8563403","DOIUrl":"https://doi.org/10.23919/SPA.2018.8563403","url":null,"abstract":"Doppler sensors are commonly used for movement detection and speed measurement. However, electromagnetic interferences and imperfections in sensor construction result in degradation of the signal to noise ratio. As a result, detection of signals reflected from moving objects becomes problematic. The paper proposes an algorithm for reduction of distortions and noise in the signal received from a simple, dual-channel type of a Doppler sensor. The proposed method is based on examining phase relationship between I/Q channels of the sensor signal. A weighting function is calculated in order to suppress the distortions while preserving energy of the desired signal. Additionally, the proposed algorithm may select signals reflected by objects moving in a specific direction (e.g. towards the sensor). The processed signal may be further analyzed in order to detect signal frequency and compute the object velocity. The results of the experiments show that the proposed approach results in significant reduction of level of noise and interferences, allowing for detection and tracking of signals reflected from moving objects.","PeriodicalId":265587,"journal":{"name":"2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA)","volume":"35 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123518906","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

Detecting the Number of Speakers in Speech Mixtures by Human and Machine 人机混合语音中说话人数量的检测

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563405

T. Maka, Miroslaw Lazoryszczak

引用次数: 2

On the influence of the image normalization scheme on texture classification accuracy 图像归一化方案对纹理分类精度的影响

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563397

Marcin Kociolek, M. Strzelecki, Szvmon Szymajda

{"title":"On the influence of the image normalization scheme on texture classification accuracy","authors":"Marcin Kociolek, M. Strzelecki, Szvmon Szymajda","doi":"10.23919/SPA.2018.8563397","DOIUrl":"https://doi.org/10.23919/SPA.2018.8563397","url":null,"abstract":"Texture can be a very rich source of information about the image. Texture analysis finds applications, among other things, in biomedical imaging. One of the widely used methods of texture analysis is the Gray Level Co-occurrence Matrix (GLCM). Texture analysis using the GLCM method is most often carried out in several stages: determination of areas of interest, normalization, calculation of the GLCM, extraction of features, and finally, the classification. Values of the GLCM based features depend on the choice of the normalization method, which was examined in this work. The normalization is necessary, since acquired images often suffer from noise and intensity artifacts. Certainly, the normalization will not eliminate these two effects, however it was demonstrated, that its application improves texture analysis accuracy. The aim of the work was to analyze the influence of different normalization methods on the discriminating ability of features estimated from the GLCM. The analysis was performed both for Brodatz textures and real magnetic resonance data. Brodatz textures were corrupted by three types of distortion: intensity nonuniformity, Gaussian noise and Rician Noise. Three types of normalizations were tested: min- max, 1–99% and $+/-3sigma$.","PeriodicalId":265587,"journal":{"name":"2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134112773","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

Preliminary investigation of the in-cylinder pressure signal using Teager energy operator 用蒂格尔能量算子对缸内压力信号进行初步研究

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563407

J. Fiolka

{"title":"Preliminary investigation of the in-cylinder pressure signal using Teager energy operator","authors":"J. Fiolka","doi":"10.23919/SPA.2018.8563407","DOIUrl":"https://doi.org/10.23919/SPA.2018.8563407","url":null,"abstract":"The Teager energy operator (TEO) has been used in various areas, including speech analysis, image processing, machinery fault diagnostics and biomedical engineering. The operator provides a simple and efficient solution to the problem of estimating the instantaneous frequency and envelope of amplitude and frequency-modulated (AM-FM) signals. Furthermore, this method is easy to implement and has a low computational complexity. In the paper, the author proposes using TEO in an automotive application to perform preliminary investigations of the in-cylinder pressure signal. Research in this area is important because it determines fuel consumption, engine durability as well as the emission of air pollutants. Detecting abnormal combustion in spark-ignition (SI) engines is possible by measuring and analysing the engine block vibrations, the ionisation current and the in-cylinder pressure. However, the fundamental variable that provides an in-depth insight into the combustion process is the pressure signal. By analysing the signal, a detailed study of the knock phenomenon can be performed, which is necessary to develop a reliable and efficient knock detection method. By applying the proposed technique, we are able to identify the basic parameters of the pressure trace, such as the starting frequency and the rate of frequency change. By knowing the value of the parameters for various engine operating conditions, the performance of a knock detection system can be improved.","PeriodicalId":265587,"journal":{"name":"2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122462863","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

HDR Image Tone Mapping Approach based on Near Optimal Separable Adaptive Lifting Scheme 基于近最优可分自适应提升方案的HDR图像色调映射方法

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563293

B. Thai, Anissa Zergaïnoh-Mokraoui, Basarab Matei

引用次数: 0

Programmable, switched-capacitor finite impulse response filter realized in CMOS technology for education purposes 用CMOS技术实现的可编程、开关电容有限脉冲响应滤波器

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563416

P. Pawlowski, A. Pawlikowski, R. Dlugosz, A. Dabrowski

引用次数: 2

Evaluation postural stability using complex-valued data Fourier analysis of the follow-up posturographic trajectories 利用复值数据对后续姿态轨迹进行傅立叶分析来评估姿态稳定性

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563273

Z. Kidoń, J. Fiolka

引用次数: 1

Features extraction for the automatic detection of ALS disease from acoustic speech signals 基于声学语音信号的ALS疾病自动检测特征提取

2018 Signal Processing: Algorithms, Architectures, Arrangements, and Applications (SPA) Pub Date : 2018-09-01 DOI: 10.23919/SPA.2018.8563414

Maxim Vashkevich, E. Azarov, A. Petrovsky, Y. Rushkevich

引用次数: 8