Signal and image processing : an international journal最新文献_第5页

Perceptually Lossless Compression with Error Concealment for Periscope and Sonar Videos 带有错误隐藏的潜望镜和声纳视频感知无损压缩

Signal and image processing : an international journal Pub Date : 2019-04-30 DOI: 10.5121/SIPIJ.2019.10201

C. Kwan, Jude Larkin, Bence Budavari, Eric Shang, T. Tran

引用次数: 6

Compression Algorithm Selection for Multispectral Mastcam Images 多光谱Mastcam图像的压缩算法选择

Signal and image processing : an international journal Pub Date : 2019-02-28 DOI: 10.5121/SIPIJ.2019.10101

C. Kwan, Jude Larkin, Bence Budavari, Bryan Chou

{"title":"Compression Algorithm Selection for Multispectral Mastcam Images","authors":"C. Kwan, Jude Larkin, Bence Budavari, Bryan Chou","doi":"10.5121/SIPIJ.2019.10101","DOIUrl":"https://doi.org/10.5121/SIPIJ.2019.10101","url":null,"abstract":"The two mast cameras (Mastcam) onboard the Mars rover, Curiosity, are multispectral imagers with nine bands in each camera. Currently, the images are compressed losslessly using JPEG, which can achieve only two to three times compression. We present a two-step approach to compressing multispectral Mastcam images. First, we propose to apply principal component analysis (PCA) to compress the nine bands into three or six bands. This step optimally compresses the 9-band images through spectral correlation between the bands. Second, several well-known image compression codecs, such as JPEG, JPEG-2000 (J2K), X264, and X265, in the literature are applied to compress the 3-band or 6-band images coming out of PCA. The performance of different algorithms was assessed using four well-known performance metrics. Extensive experiments using actual Mastcam images have been performed to demonstrate the proposed framework. We observed that perceptually lossless compression can be achieved at a 10:1 compression ratio. In particular, the performance gain of an approach using a combination of PCA and X265 is at least 5 dBs in terms peak signal-to-noise ratio (PSNR) at a 10:1 compression ratio over that of JPEG when using our proposed approach.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86902752","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: 13

Facial Expression Detection for video sequences using local feature extraction algorithms 基于局部特征提取算法的视频序列面部表情检测

Signal and image processing : an international journal Pub Date : 2019-02-28 DOI: 10.5121/SIPIJ.2019.10103

Kennedy Chengeta, Serestina Viriri

{"title":"Facial Expression Detection for video sequences using local feature extraction algorithms","authors":"Kennedy Chengeta, Serestina Viriri","doi":"10.5121/SIPIJ.2019.10103","DOIUrl":"https://doi.org/10.5121/SIPIJ.2019.10103","url":null,"abstract":"Facial expression image analysis can either be in the form of static image analysis or dynamic temporal 3D image or video analysis. The former involves static images taken on an individual at a specific point in time and is in 2-dimensional format. The latter involves dynamic textures extraction of video sequences extended in a temporal domain. Dynamic texture analysis involves short term facial expression movements in 3D in a temporal or spatial domain. Two feature extraction algorithms are used in 3D facial expression analysis namely holistic and local algorithms. Holistic algorithms analyze the whole face whilst the local algorithms analyze a facial image in small components namely nose, mouth, cheek and forehead. The paper uses a popular local feature extraction algorithm called LBP-TOP, dynamic image features based on video sequences in a temporal domain. Volume Local Binary Patterns combine texture, motion and appearance. VLBP and LBP-TOP outperformed other approaches by including local facial feature extraction algorithms which are resistant to gray-scale modifications and computation. It is also crucial to note that these emotions being natural reactions, recognition of feature selection and edge detection from the video sequences can increase accuracy and reduce the error rate. This can be achieved by removing unimportant information from the facial images. The results showed better percentage recognition rate by using local facial extraction algorithms like local binary patterns and local directional patterns than holistic algorithms like GLCM and Linear Discriminant Analysis. The study proposes local binary pattern variant LBP-TOP, local directional patterns and support vector machines aided by genetic algorithms for feature selection. The study was based on Facial Expressions and Emotions (FEED) and CK+ image sources.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"33 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85435998","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 PRECISION AGRICULTURE DSS BASED ON SENSOR THRESHOLD MANAGEMENT FOR IRRIGATION FIELD 基于传感器阈值管理的灌区精准农业决策支持系统

Signal and image processing : an international journal Pub Date : 2018-12-31 DOI: 10.5121/SIPIJ.2018.9604

A. Massaro, Giacomo Meuli, Nicola Savino, A. Galiano

{"title":"A PRECISION AGRICULTURE DSS BASED ON SENSOR THRESHOLD MANAGEMENT FOR IRRIGATION FIELD","authors":"A. Massaro, Giacomo Meuli, Nicola Savino, A. Galiano","doi":"10.5121/SIPIJ.2018.9604","DOIUrl":"https://doi.org/10.5121/SIPIJ.2018.9604","url":null,"abstract":"In this paper is analyzed a case study of an industry project concerning irrigation decision support system (DSS) suitable for precision agriculture applications. In particular, a first prototype irrigation module has been developed by testing different components. The prototypal system concerns the irrigation management by reading field and weather values and, by enabling electrovalves through cloud control. A web panel will monitor in real time all sensors data, besides the DSS will activate or disactivate the irrigation pipelines. The irrigation decision is performed by comparing the measurements with pre-set threshold limits of sensor values and by analyzing predicted weather data. The paper describes in details the network design and implementation by discussing the sequence diagram describing the DSS data flow. Finally is proposed the DSS algorithm by discussing the DSS logic and its first implementation. The proposed DSS behaves as an engine processing simultaneously multiple parameters. The goal of the paper is to prove how potentially a microcontroller can perform a DSS which can be customized for different cultivations.","PeriodicalId":90726,"journal":{"name":"Signal and image processing : an international journal","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89758815","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: 5

DESIGN OF DELAY COMPUTATION METHOD FOR CYCLOTOMIC FAST FOURIER TRANSFORM 切眼快速傅立叶变换延迟计算方法的设计

Signal and image processing : an international journal Pub Date : 2018-12-31 DOI: 10.5121/SIPIJ.2018.9602

Tejaswini P. Deshmukh, P. Deshmukh, Monica Kalbande, P. Dakhole

引用次数: 1

Computer Aided Diagnosis of Ventricular Arrhythmias from Electrocardiogram Lead II Signals 心电图导联ⅱ信号对室性心律失常的计算机辅助诊断

Signal and image processing : an international journal Pub Date : 2018-10-30 DOI: 10.5121/sipij.2018.9501

Saleh A. Alzahrani, Umar S. Alqasemi

引用次数: 0

Experimental Research of Highly Reliable Methods of Hydroacoustic Communication for Limited Water Bodies with Low Sound Absorption and a Complex Revervebration Pattern 低吸声和复杂混响模式有限水体高可靠水声通信方法的实验研究

Signal and image processing : an international journal Pub Date : 2018-08-30 DOI: 10.5121/SIPIJ.2018.9401

Alexander Dikarev, Stanislav Dmitriev, Vitaliy Kubkin, Arron Griffiths, Arthur Abelentsev

引用次数: 0

A Study on the Standards of the Management of Segregated Biometric Data 生物特征分离数据管理标准研究

Signal and image processing : an international journal Pub Date : 2018-08-30 DOI: 10.5121/SIPIJ.2018.9403

Yougjae Kim

引用次数: 0

4D Automatic Lip-Reading for Speaker's Face Identification 用于说话人面部识别的4D自动唇读

Signal and image processing : an international journal Pub Date : 2018-06-30 DOI: 10.5121/SIPIJ.2018.9302

Adil AbdUlhur AbUShana

引用次数: 0

Automatic Image Processing Engine Oriented on Quality Control of Electronic Boards 面向电路板质量控制的自动图像处理引擎

Signal and image processing : an international journal Pub Date : 2018-04-30 DOI: 10.5121/SIPIJ.2018.9201

A. Massaro, Valeria Vitti, A. Galiano

引用次数: 12