The 10th IEEE International Symposium on Signal Processing and Information Technology最新文献_第3页

A pixel-domain post-processing technique to reduce the blocking artifacts in transform-coded images 一种减少变换编码图像中块伪影的像素域后处理技术

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711816

U. S. Mohammed

{"title":"A pixel-domain post-processing technique to reduce the blocking artifacts in transform-coded images","authors":"U. S. Mohammed","doi":"10.1109/ISSPIT.2010.5711816","DOIUrl":"https://doi.org/10.1109/ISSPIT.2010.5711816","url":null,"abstract":"The reconstructed images after compression produce annoying blocking artifacts near block boundaries, particularly in low bit-rate image compression, because each block is transformed and quantized independently Detection of blocking artifact has an important role in the design of image coding systems. Increasing the bit rate to obtain better quality images is too costly. In this paper, a novel pixel-domain technique for image blocking artifact detection is presented. The algorithm detects the regions of the image which present visible blocking artifacts. The blocking artifact detection and reduction is presented as a post- processing in the image decoder. The algorithm first detects the direction of artifact through power spectrum estimation of the e pixel absolute difference (PAD) in both horizontal and vertical directions. The power spectrum of the PAD is estimated using the Maximum Entropy method (MEM) which is a nonparametric method to perform accurate power spectrum estimation. The reduction process is applied on the direction of artifacts only to improve the image quality. The key of the reduction process is based on the modified projection operator to give reasonable modifications for the block boundary pixels. The simulation results illustrate the performance of the proposed method for the JPEG decoded images.","PeriodicalId":308189,"journal":{"name":"The 10th IEEE International Symposium on Signal Processing and Information Technology","volume":"17 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122371887","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

Multi-channel ANC using online secondary-path modeling with noise power scheduling 基于噪声功率调度的在线二次路径多通道ANC

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711806

T. Jung, J. Seo, Ki-Jin Kim, J. Kim, S. Nam

引用次数: 1

Human activity recognition via temporal moment invariants 基于时间矩不变性的人类活动识别

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711729

S. Sadek, A. Al-Hamadi, M. Elmezain, B. Michaelis, Usama Sayed

引用次数: 10

On the effect of High Power Amplifier Nonlinearity on MIMO MC-CDMA systems 大功率放大器非线性对MIMO MC-CDMA系统的影响

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711775

M. Dakhli, R. Zayani, R. Bouallègue

引用次数: 5

Deep Belief Network for clustering and classification of a continuous data 深度信念网络用于连续数据的聚类和分类

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711759

M. Salama, A. Hassanien, A. Fahmy

引用次数: 32

MMSE detector using forward and backward reciprocal-lattice reduction in MIMO systems 在MIMO系统中使用正向和反向互格缩减的MMSE检测器

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711796

H. Negishi, Wei Hou, T. Fujino

引用次数: 0

Orientation of multiple principal axes shapes using efficient averaging method 多主轴形状定向的高效平均法

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711815

Emad El-Sayed, Rehab F. Abdel-Kader, Rabab M. Ramadan

{"title":"Orientation of multiple principal axes shapes using efficient averaging method","authors":"Emad El-Sayed, Rehab F. Abdel-Kader, Rabab M. Ramadan","doi":"10.1109/ISSPIT.2010.5711815","DOIUrl":"https://doi.org/10.1109/ISSPIT.2010.5711815","url":null,"abstract":"In this paper we propose an effective, low computational cost technique to find the orientation of shapes that have several non-equally separated axes of symmetry. In our technique we define a simple method to calculate the average angle of the shape's axes of symmetry. The axes of symmetry of the shape could be detected using any of the well known techniques reported in the literature. In the proposed technique we use the edge points of the shape to have the ability to deal with natural pictures like coins. The internal edges are used in addition to the external boundary edges to increase the orientation detection capabilities of the algorithm. First, the edge map of the image is extracted by applying Canny edge detector [15]. Second, the center of the object is detected by calculating the average of the vertical and horizontal coordinates of the points of the edge map. Third, the total perpendicular absolute distances from the edge map points to the line that passes through the center point with specified angle are calculated. These calculations are repeated with different angles to find the angles of the minimum peaks of the calculated distances. Finally, if the shape has more than one minimum peak we use our averaging method to get the dominant direction angle of the shape or the shape orientation. By using this technique we only use the first moment of inertia and do not have to use any higher orders to reduce the computational cost.","PeriodicalId":308189,"journal":{"name":"The 10th IEEE International Symposium on Signal Processing and Information Technology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125280013","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

A framework to strengthen password authentication using mobile devices and browser extensions 一个使用移动设备和浏览器扩展来加强密码认证的框架

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711728

P. Shi, Bo Zhu, A. Youssef

引用次数: 1

Enhancement of breathing signal using delayless subband adaptive filter with HPF 用HPF无延迟子带自适应滤波器增强呼吸信号

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711770

Kali Vara Prasad Naraharisetti

引用次数: 1

Resource allocation in relay-assisted DS/CDMA interference channels: A Stackelberg game approach 中继辅助DS/CDMA干扰信道中的资源分配:一种Stackelberg博弈方法

The 10th IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2010-12-15 DOI: 10.1109/ISSPIT.2010.5711791

A. Zappone, Eduard Axel Jorswieck

引用次数: 6