2007 IEEE 9th Workshop on Multimedia Signal Processing最新文献_第3页

Steganalysis for LSB Matching in Images with High-frequency Noise 高频噪声图像中LSB匹配的隐写分析

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412897

Jun Zhang, I. Cox, G. Doërr

{"title":"Steganalysis for LSB Matching in Images with High-frequency Noise","authors":"Jun Zhang, I. Cox, G. Doërr","doi":"10.1109/MMSP.2007.4412897","DOIUrl":"https://doi.org/10.1109/MMSP.2007.4412897","url":null,"abstract":"Considerable progress has been made in the detection of steganographic algorithms based on replacement of the least significant bit (LSB) plane. However, if LSB matching, also known as -1 embedding, is used, the detection rates are considerably reduced. In particular, since LSB embedding is modeled as an additive noise process, detection is especially poor for images that exhibit high-frequency noise - the high-frequency noise is often incorrectly thought to be indicative of a hidden message. To overcome this, we propose a targeted steganalysis algorithm that exploits the fact that after LSB matching, the local maxima of an images graylevel or color histogram decrease and the local minima increase. Consequently, the sum of the absolute differences between local extrema and their neighbors in the intensity histogram of stego images will be smaller than for cover images. Experimental results on two datasets, each of 2000 images, demonstrate that this method has superior results compared with other recently proposed algorithms when the images contain high-frequency noise, e.g. never-compressed imagery such as high-resolution scans of photographs and video. However, the method is inferior to the prior art when applied to decompressed imagery with little or no high-frequency noise.","PeriodicalId":225295,"journal":{"name":"2007 IEEE 9th Workshop on Multimedia Signal Processing","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128163380","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: 105

A Film Classifier Based on Low-level Visual Features 基于低层次视觉特征的电影分类器

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.4304/jmm.3.3.26-33

Hui-Yu Huang, W. Shih, W. Hsu

引用次数: 27

Suppression of Boundary Effect and Introduction of Scale Correlation for Wavelet based Traffic Prediction 小波交通预测中边界效应的抑制及尺度相关性的引入

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412910

Naoya Matsusue, H. Hasegawa, Ken-ichi Sato

引用次数: 0

Smart Transcoding between CELP Speech Codecs through Voiced Oriented Pitch Mapping 智能转码之间的CELP语音编解码器通过发声定向音高映射

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412841

C. Beaugeant

引用次数: 3

State of the Art and Future Directions in Musical Sound Synthesis 音乐声音合成的艺术现状和未来方向

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412805

Xavier Serra

{"title":"State of the Art and Future Directions in Musical Sound Synthesis","authors":"Xavier Serra","doi":"10.1109/MMSP.2007.4412805","DOIUrl":"https://doi.org/10.1109/MMSP.2007.4412805","url":null,"abstract":"Sound synthesis and processing has been the most active research topic in the field of sound and music computing for more than 40 years. Quite a number of the early research results are now standard components of many audio and music devices and new technologies are continuously being developed and integrated into new products. Through the years there have been important changes. For example, most of the abstract algorithms that were the focus of work in the 70s and 80s are considered obsolete. Then the 1990s saw the emergence of computational approaches that aimed either at capturing the characteristics of a sound source, known as physical models, or at capturing the perceptual characteristics of the sound signal, generally referred to as spectral or signal models. More recent trends include the combination of physical and spectral models and the corpus-based concatenative methods. But the field faces major challenges that might revolutionize the standard paradigms and applications of sound synthesis. In this article, we will first place the sound synthesis topic within its research context, then we will highlight some of the current trends, and finally we will attempt to identify some challenges for the future.","PeriodicalId":225295,"journal":{"name":"2007 IEEE 9th Workshop on Multimedia Signal Processing","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115790782","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: 9

Exponential Decay of Transmission Distortion in H.264 H.264传输失真的指数衰减

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412869

S. Nyamweno, Ramdas Satyan, F. Labeau

引用次数: 4

Unsupervised Discovery of Action Hierarchies in Large Collections of Activity Videos 大型活动视频集合中动作层次的无监督发现

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412903

P. Ahammad, Chuohao Yeo, K. Ramchandran, S. Sastry

{"title":"Unsupervised Discovery of Action Hierarchies in Large Collections of Activity Videos","authors":"P. Ahammad, Chuohao Yeo, K. Ramchandran, S. Sastry","doi":"10.1109/MMSP.2007.4412903","DOIUrl":"https://doi.org/10.1109/MMSP.2007.4412903","url":null,"abstract":"Given a large collection of videos containing activities, we investigate the problem of organizing it in an unsupervised fashion into a hierarchy based on the similarity of actions embedded in the videos. We use spatio-temporal volumes of filtered motion vectors to compute appearance-invariant action similarity measures efficiently -and use these similarity measures in hierarchical agglomerative clustering to organize videos into a hierarchy such that neighboring nodes contain similar actions. This naturally leads to a simple automatic scheme for selecting videos of representative actions (exemplars) from the database and for efficiently indexing the whole database. We compute a performance metric on the hierarchical structure to evaluate goodness of the estimated hierarchy, and show that this metric has potential for predicting the clustering performance of various joining criteria used in building hierarchies. Our results show that perceptually meaningful hierarchies can be constructed based on action similarities with minimal user supervision, while providing favorable clustering performance and retrieval performance.","PeriodicalId":225295,"journal":{"name":"2007 IEEE 9th Workshop on Multimedia Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126151989","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

Adaptive In-Loop Prediction Refinement for Video Coding 视频编码的自适应环内预测改进

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412845

Shay Har-Noy, Ò. Escoda, P. Yin, C. Gomila, Truong Q. Nguyen

引用次数: 1

Using Adaptive Genetic Algorithms to Improve Speech Emotion Recognition 应用自适应遗传算法改进语音情感识别

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412916

M. Sedaaghi, Constantine Kotropoulos, D. Ververidis

引用次数: 25

Real-time Emotion Detection System using Speech: Multi-modal Fusion of Different Timescale Features 语音实时情感检测系统:不同时间尺度特征的多模态融合

2007 IEEE 9th Workshop on Multimedia Signal Processing Pub Date : 2007-10-01 DOI: 10.1109/MMSP.2007.4412815

Samuel Kim, P. Georgiou, Sungbok Lee, Shrikanth S. Narayanan

引用次数: 102