Articles

Human Motion Analysis via Statistical Motion Processing and Sequential Change Detection

The widespread use of digital multimedia in applications, such as security, surveillance, and the semantic web, has made the automated characterization of human activity necessary. In this work, a method for t...

Authors: Alexia Briassouli, Vagia Tsiminaki and Ioannis Kompatsiaris

A New Denoising System for SONAR Images

The SONAR images are perturbed by speckle noise. The use of speckle reduction filters is necessary to optimize the image exploitation procedures. This paper presents a new denoising method in the wavelet domai...

Authors: Alexandru Isar, Sorin Moga and Dorina Isar

Smooth Adaptation by Sigmoid Shrinkage

This paper addresses the properties of a subclass of sigmoid-based shrinkage functions: the non zeroforcing smooth sigmoid-based shrinkage functions or SigShrink functions. It provides a SURE optimization for ...

Authors: Abdourrahmane M. Atto, Dominique Pastor and Grégoire Mercier

Multichannel Texture Segmentation Using Bamberger Pyramids

A multichannel texture segmentation algorithm is presented based on the image pyramids produced with the Bamberger directional filter bank. An extensive evaluation of Bamberger pyramids and their design parame...

Authors: Jose Gerardo Rosiles and Mark J. T. Smith

On Parsing Visual Sequences with the Hidden Markov Model

Hidden Markov Models have been employed in many vision applications to model and identify events of interest. Their use is common in applications where HMMs are used to classify previously divided segments of ...

Authors: Naomi Harte, Daire Lennon and Anil Kokaram

Viewpoint Manifolds for Action Recognition

Action recognition from video is a problem that has many important applications to human motion analysis. In real-world settings, the viewpoint of the camera cannot always be fixed relative to the subject, so ...

Authors: Richard Souvenir and Kyle Parrigan

Real-Time Multiview Recognition of Human Gestures by Distributed Image Processing

Since a gesture involves a dynamic and complex motion, multiview observation and recognition are desirable. For the better representation of gestures, one needs to know, in the first place, from which views a ...

Authors: Toshiyuki Kirishima, Yoshitsugu Manabe, Kosuke Sato and Kunihiro Chihara

Parity Bit Replenishment for JPEG 2000-Based Video Streaming

This paper envisions coding with side information to design a highly scalable video codec. To achieve fine-grained scalability in terms of resolution, quality, and spatial access as well as temporal access to ...

Authors: François-Olivier Devaux and Christophe De Vleeschouwer

Spatiotemporal Region Enhancement and Merging for Unsupervized Object Segmentation

This paper proposes an unsupervized offline video object segmentation method that introduces a number of improvements to existing work in the area. It consists of the following steps. The initial segmentation ...

Authors: K Ryan, A Amer and L Gagnon

Adaptive Edge-Oriented Shot Boundary Detection

We study the problem of video shot boundary detection using an adaptive edge-oriented framework. Our approach is distinct in its use of multiple multilevel features in the required processing. Adaptation is pr...

Authors: Don Adjeroh, M. C. Lee, N. Banda and Uma Kandaswamy

Unequal Error Protection Techniques Based on Wyner-Ziv Coding

Compressed video is very sensitive to channel errors. A few bit losses can stop the entire decoding process. Therefore, protecting compressed video is always necessary for reliable visual communications. Utili...

Authors: Liang Liang, Paul Salama and Edward J. Delp

Texture Classification for 3D Urban Map

This paper proposes a method to control texture resolution for rendering large-scale 3D urban maps. Since on the 3D maps texture data generally tend to be far larger than geometry information such as vertices ...

Authors: Hiroyuki Inatsuka, Makoto Uchino, Satoshi Ueno and Masahiro Okuda

Profile-Based Focused Crawling for Social Media-Sharing Websites

We present a novel profile-based focused crawling system for dealing with the increasingly popular social media-sharing websites. In this system, we treat the user profiles as ranking criteria for guiding the ...

Authors: Zhiyong Zhang and Olfa Nasraoui

Rendering-Oriented Decoding for a Distributed Multiview Coding System Using a Coset Code

This paper discusses a system in which multiview images are captured and encoded in a distributed fashion and a viewer synthesizes a novel image from this data. We present an efficient method for such a system...

Authors: Yuichi Taguchi and Takeshi Naemura

Image Segmentation Method Using Thresholds Automatically Determined from Picture Contents

Image segmentation has become an indispensable task in many image and video applications. This work develops an image segmentation method based on the modified edge-following scheme where different thresholds ...

Authors: Yuan Been Chen and Oscal T-C Chen

Three-Dimensional Image and Video Processing

Authors: Peter Eisert, Marc Pollefeys and Stefano Tubaro

Patches in Vision

Authors: Simon Lucey and Tsuhan Chen

A Patch-Based Structural Masking Model with an Application to Compression

The ability of an image region to hide or mask a given target signal continues to play a key role in the design of numerous image processing and vision systems. However, current state-of-the-art models of visual ...

Authors: Damon M. Chandler, Matthew D. Gaubatz and Sheila S. Hemami

Error Resilience in Current Distributed Video Coding Architectures

In distributed video coding the signal prediction is shifted at the decoder side, giving therefore most of the computational complexity burden at the receiver. Moreover, since no prediction loop exists before ...

Authors: Claudia Tonoli, Pierangelo Migliorati and Riccardo Leonardi

Spatial-Aided Low-Delay Wyner-Ziv Video Coding

In distributed video coding, the side information (SI) quality plays an important role in Wyner-Ziv (WZ) frame coding. Usually, SI is generated at the decoder by the motion-compensated interpolation (MCI) from...

Authors: Bo Wu, Xiangyang Ji, Debin Zhao and Wen Gao

Dynamic Quality Control for Transform Domain Wyner-Ziv Video Coding

Wyner-Ziv is an emerging video coding paradigm based on the Slepian-Wolf and Wyner-Ziv theorems where video coding may be performed by exploiting the temporal correlation at the decoder and not anymore at the ...

Authors: Sören Sofke, Fernando Pereira (EURASIP Member) and Erika Müller

Side-Information Generation for Temporally and Spatially Scalable Wyner-Ziv Codecs

The distributed video coding paradigm enables video codecs to operate with reversed complexity, in which the complexity is shifted from the encoder toward the decoder. Its performance is heavily dependent on t...

Authors: Bruno Macchiavello, Fernanda Brandi, Eduardo Peixoto, Ricardo L. de Queiroz and Debargha Mukherjee

Iterative Multiview Side Information for Enhanced Reconstruction in Distributed Video Coding

Distributed video coding (DVC) is a new paradigm for video compression based on the information theoretical results of Slepian and Wolf (SW) and Wyner and Ziv (WZ). DVC entails low-complexity encoders as well ...

Authors: Mourad Ouaret, Frédéric Dufaux and Touradj Ebrahimi

Video Tracking in Complex Scenes for Surveillance Applications

Authors: CarloS Regazzoni, Andrea Cavallaro and Fatih Porikli

Improved Side Information Generation for Distributed Video Coding by Exploiting Spatial and Temporal Correlations

Distributed video coding (DVC) is a video coding paradigm allowing low complexity encoding for emerging applications such as wireless video surveillance. Side information (SI) generation is a key function in t...

Authors: Shuiming Ye, Mourad Ouaret, Frederic Dufaux and Touradj Ebrahimi

Hybrid Modeling of Intra-DCT Coefficients for Real-Time Video Encoding

The two-dimensional discrete cosine transform (2-D DCT) and its subsequent quantization are widely used in standard video encoders. However, since most DCT coefficients become zeros after quantization, a numbe...

Authors: Jin Li, Moncef Gabbouj and Jarmo Takala

View Synthesis for Advanced 3D Video Systems

Interest in 3D video applications and systems is growing rapidly and technology is maturating. It is expected that multiview autostereoscopic displays will play an important role in home user environments, sin...

Authors: Karsten Müller, Aljoscha Smolic, Kristina Dix, Philipp Merkle, Peter Kauff and Thomas Wiegand

Identification of Sparse Audio Tampering Using Distributed Source Coding and Compressive Sensing Techniques

In the past few years, a large amount of techniques have been proposed to identify whether a multimedia content has been illegally tampered or not. Nevertheless, very few efforts have been devoted to identifyi...

Authors: G Valenzise, G Prandi, M Tagliasacchi and A Sarti

Contextual Classification of Image Patches with Latent Aspect Models

We present a novel approach for contextual classification of image patches in complex visual scenes, based on the use of histograms of quantized features and probabilistic aspect models. Our approach uses cont...

Authors: Florent Monay, Pedro Quelhas, Jean-Marc Odobez and Daniel Gatica-Perez

A Robust Subpixel Motion Estimation Algorithm Using HOS in the Parametric Domain

Motion estimation techniques are widely used in todays video processing systems. The most frequently used techniques are the optical flow method and phase correlation method. The vast majority of these algorit...

Authors: EM Ismaili Aalaoui, E Ibn-Elhaj and EH Bouyakhf

Edge-Detected Guided Morphological Filter for Image Sharpening

A new edge-guided morphological filter is proposed to sharpen digital images. This is done by detecting the positions of the edges and then applying a class of morphological filtering. Motivated by the success...

Authors: TA Mahmoud and S Marshall

Models for Patch-Based Image Restoration

We present a supervised learning approach for object-category specific restoration, recognition, and segmentation of images which are blurred using an unknown kernel. The novelty of this work is a multilayer g...

Authors: Mithun Das Gupta, Shyamsundar Rajaram, Nemanja Petrovic and Thomas S. Huang

Quality Assessment of Stereoscopic Images

Several metrics have been proposed in literature to assess the perceptual quality of two-dimensional images. However, no similar effort has been devoted to quality assessment of stereoscopic images. Therefore,...

Authors: Alexandre Benoit, Patrick Le Callet, Patrizio Campisi and Romain Cousseau

Unsupervised Modeling of Objects and Their Hierarchical Contextual Interactions

A successful representation of objects in literature is as a collection of patches, or parts, with a certain appearance and position. The relative locations of the different parts of an object are constrained ...

Authors: Devi Parikh and Tsuhan Chen

Building Local Features from Pattern-Based Approximations of Patches: Discussion on Moments and Hough Transform

The paper overviews the concept of using circular patches as local features for image description, matching, and retrieval. The contents of scanning circular windows are approximated by predefined patterns. Ch...

Authors: Andrzej Sluzek

Fast Macroblock Mode Selection Algorithm for Multiview Video Coding

Multiview video coding (MVC) plays an important role in three-dimensional video applications. Joint Video Team developed a joint multiview video model (JMVM) in which full-search algorithm is employed in macro...

Authors: Zongju Peng, Gangyi Jiang, Mei Yu and Qionghai Dai

Multiple Human Tracking Using Particle Filter with Gaussian Process Dynamical Model

We present a particle filter-based multitarget tracking method incorporating Gaussian process dynamical model (GPDM) to improve robustness in multitarget tracking. With the particle filter Gaussian process dyn...

Authors: Jing Wang, Yafeng Yin and Hong Man

Occlusion-Aware View Interpolation

View interpolation is an essential step in content preparation for multiview 3D displays, free-viewpoint video, and multiview image/video compression. It is performed by establishing a correspondence among vie...

Authors: Serdar Ince and Janusz Konrad

Multiview Trajectory Mapping Using Homography with Lens Distortion Correction

We present a trajectory mapping algorithm for a distributed camera setting that is based on statistical homography estimation accounting for the distortion introduced by camera lenses. Unlike traditional appro...

Authors: Gabin Kayumbi and Andrea Cavallaro

Robust and Scalable Transmission of Arbitrary 3D Models over Wireless Networks

We describe transmission of 3D objects represented by texture and mesh over unreliable networks, extending our earlier work for regular mesh structure to arbitrary meshes and considering linear versus cubic in...

Authors: Irene Cheng, Lihang Ying, Kostas Daniilidis and Anup Basu

A Nonlinear Decision-Based Algorithm for Removal of Strip Lines, Drop Lines, Blotches, Band Missing and Impulses in Images and Videos

A decision-based nonlinear algorithm for removal of strip lines, drop lines, blotches, band missing, and impulses in images is presented. The algorithm performs two simultaneous operations, namely, detection o...

Authors: S Manikandan and D Ebenezer

Feature Classification for Robust Shape-Based Collaborative Tracking and Model Updating

A new collaborative tracking approach is introduced which takes advantage of classified features. The core of this tracker is a single tracker that is able to detect occlusions and classify features contributi...

Authors: M. Asadi, F. Monti and C. S. Regazzoni

Tracking of Moving Objects in Video Through Invariant Features in Their Graph Representation

The paper suggests a contour-based algorithm for tracking moving objects in video. The inputs are segmented moving objects. Each segmented frame is transformed into region adjacency graphs (RAGs). The object's...

Authors: O Miller, A Averbuch and E Navon

Iterative Object Localization Algorithm Using Visual Images with a Reference Coordinate

We present a simplified algorithm for localizing an object using multiple visual images that are obtained from widely used digital imaging devices. We use a parallel projection model which supports both zoomin...

Authors: Kyoung-Su Park, Jinseok Lee, Milutin Stanaćević, Sangjin Hong and We-Duke Cho

Efficient Adaptive Combination of Histograms for Real-Time Tracking

We quantitatively compare two template-based tracking algorithms, Hager's method and the hyperplane tracker, and three histogram-based methods, the mean-shift tracker, two trust-region trackers, and the CONDEN...

Authors: F Bajramovic, B Deutsch, Ch Gräßl and J Denzler

A Scalable Clustered Camera System for Multiple Object Tracking

Reliable and efficient tracking of objects by multiple cameras is an important and challenging problem, which finds wide-ranging application areas. Most existing systems assume that data from multiple cameras ...

Authors: Senem Velipasalar, Jason Schlessman, Cheng-Yao Chen, WayneH Wolf and JaswinderP Singh

A Review and Comparison of Measures for Automatic Video Surveillance Systems

Today's video surveillance systems are increasingly equipped with video content analysis for a great variety of applications. However, reliability and robustness of video content analysis algorithms remain an ...

Authors: Axel Baumann, Marco Boltz, Julia Ebling, Matthias Koenig, HartmutS Loos, Marcel Merkel, Wolfgang Niem, JanKarl Warzelhan and Jie Yu

Improved Motion Estimation Using Early Zero-Block Detection

We incorporate the early zero-block detection technique into the UMHexagonS algorithm, which has already been adopted in H.264/AVC JM reference software, to speed up the motion estimation process. A nearly suf...

Authors: YM Lee, YJ Tsai and Y Lin

Robust Real-Time 3D Object Tracking with Interfering Background Visual Projections

This paper presents a robust real-time object tracking system for human computer interaction in mediated environments with interfering visual projection in the background. Two major contributions are made in o...

Authors: Huan Jin and Gang Qian

Track and Cut: Simultaneous Tracking and Segmentation of Multiple Objects with Graph Cuts

This paper presents a new method to both track and segment multiple objects in videos using min-cut/max-flow optimizations. We introduce objective functions that combine low-level pixel wise measures (color, m...

Authors: Aurélie Bugeau and Patrick Pérez