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Optimal buffered compression and coding mode selection for MPEG-4 shape coding

J.-B. Lee, J.-S. Cho, A. Eleftheriadis
2001 IEEE Transactions on Image Processing  
To this end, a low bit rate tuned algorithm is proposed in this paper as well. Experimental results are given using an MPEG-4 shape codec.  ...  Since arithmetic coding is "lossless," the down up scaling step is considered as a virtual quantizer.  ...  After size conversion, each BAB is coded according to one of seven different modes, all lossless, as follows: Here, MVs and MVPs are defined as a shape motion vector and a shape motion vector predictor  ... 
doi:10.1109/83.918562 pmid:18249659 fatcat:axj4443mc5fwvpzyzgspce4xjq

Are You on My Wavelength? Interpersonal Coordination in Dyadic Conversations

Joanna Hale, Jamie A. Ward, Francesco Buccheri, Dominic Oliver, Antonia F. de C. Hamilton
2019 Journal of nonverbal behavior  
In a pre-registered analysis pathway, we calculated the wavelet coherence of head motion within dyads as a measure of their nonverbal coordination and report two novel results.  ...  Here we describe data from high-resolution motion capture of the head movements of pairs of participants (n = 31 dyads) engaged in structured conversations.  ...  Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creat iveco mmons .org/licen ses/by/4.0/), which permits unrestricted use,  ... 
doi:10.1007/s10919-019-00320-3 pmid:32189820 pmcid:PMC7054373 fatcat:wp6bovlanvgtrdeyodmkfpiru4

ICP stereo visual odometry for wheeled vehicles based on a 1DOF motion prior

Yanhua Jiang, Huiyan Chen, Guangming Xiong, Davide Scaramuzza
2014 2014 IEEE International Conference on Robotics and Automation (ICRA)  
The motion is then computed incrementally from the inliers using a standard linear 3D-to-2D pose-estimation method without any additional batch optimization.  ...  In this paper, we propose a novel, efficient stereo visual-odometry algorithm for ground vehicles moving in outdoor environments.  ...  Finally, all selected inlier features are used to estimate the motion parameters using EPnP. The pseudo-code of the algorithm is given in Table I . A.  ... 
doi:10.1109/icra.2014.6906914 dblp:conf/icra/JiangCXS14 fatcat:qw43wzdpm5alnbdrybhxt7g2im

Movement Coordination during Conversation

Nida Latif, Adriano V. Barbosa, Eric Vatiokiotis-Bateson, Monica S. Castelhano, K. G. Munhall, Howard Nusbaum
2014 PLoS ONE  
We used novel computational methods to quantify motor coordination and demonstrated that individuals familiar with each other coordinated their movements more frequently.  ...  Observers used coordination to judge affiliation between conversing pairs but only when the perceptual stimuli were restricted to head and face regions.  ...  Others have used randomly selected single frames [42] , frame sequences that reduce the full frame rate [43] and frames showing extreme postures [44] .  ... 
doi:10.1371/journal.pone.0105036 pmid:25119189 pmcid:PMC4132081 fatcat:3umveejltfbybfhcwccnsdxtge

Efficient Three-Dimensional Metric Object Modeling From Uncalibrated Image Sequences

L. Cadman, T. Tjahjadi
2004 IEEE Transactions on Systems Man and Cybernetics Part B (Cybernetics)  
This paper presents a scheme that addresses the practical issues associated with producing a geometric model of a scene using a passive sensing technique.  ...  The former method employs a robust corner-tracking algorithm that copes with the appearance and disappearance of features and a corner-based structure and motion estimation algorithm that handles the inclusion  ...  Furthermore, our novel estimator supports the inclusion of new features by allowing its state vector to be extended and permitting the object reference frame to vary with time.  ... 
doi:10.1109/tsmcb.2003.817103 pmid:15376835 fatcat:v65rqecqq5e37oojrn5svwwtji

Learning Individual Styles of Conversational Gesture

Shiry Ginosar, Amir Bar, Gefen Kohavi, Caroline Chan, Andrew Owens, Jitendra Malik
2019 2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)  
We present a method for cross-modal translation from "in-the-wild" monologue speech of a single speaker to their conversational gesture motion.  ...  From the bottom upward: the input audio, arm and hand pose predicted by our model, and video frames synthesized from pose predictions using [10].  ...  Kendon [22] places conversational gestures at one end of a continuum, with sign language, a true language, at the other end.  ... 
doi:10.1109/cvpr.2019.00361 dblp:conf/cvpr/GinosarBKCOM19 fatcat:pyvacuabvjfmnf5vbxnim5wgj4

Pose Recognition in the Wild: Animal pose estimation using Agglomerative Clustering and Contrastive Learning [article]

Samayan Bhattacharya, Sk Shahnawaz
2021 arXiv   pre-print
In this paper, we introduce a novel architecture that is able to recognize the pose of multiple animals fromunlabelled data.  ...  We do this by (1) removing background information from each image and employing an edge detection algorithm on the body of the animal, (2) Tracking motion of the edge pixels and performing agglomerative  ...  Conversion to vectors To track the motion of the animal we employ a pixel-wise coattention mechanism.  ... 
arXiv:2111.08259v1 fatcat:6utxtcibwrfaxg2w3wjceg25hm

Principles of GNSS, inertial, and multisensor integrated navigation systems, 2nd edition [Book review]

Paul D. Groves
2015 IEEE Aerospace and Electronic Systems Magazine  
The third step, state propagation, uses this to bring the state vector estimate up to date.  ...  Angular Rate The angular rate vector, ␥ ␤␣ , is the rate of rotation of the ␣-frame axes with respect to the ␤-frame axes, resolved about the ␥ -frame axes.  ...  Where a matrix is not square, a pseudo-inverse, A T (AA T ) −1 or (A T A) −1 A T , may be used instead, provided AA T or A T A has an inverse.  ... 
doi:10.1109/maes.2014.14110 fatcat:iwowfiidazbljiamuiyjv6363u

Enhancing Indoor Inertial Pedestrian Navigation Using a Shoe-Worn Marker

Mitja Placer, Stanislav Kovačič
2013 Sensors  
as pseudo-measurements.  ...  We propose a novel hybrid inertial sensors-based indoor pedestrian dead reckoning system, aided by computer vision-derived position measurements.  ...  Using a self-attached visual marker as a positional reference for a combined IMUCC unit is a novel approach, since visual markers are usually pre-deployed into the environment.  ... 
doi:10.3390/s130809836 pmid:23917258 pmcid:PMC3812582 fatcat:tl4ljn3laratjkrcr2nfgqijeu

Measuring Dynamic and Kinetic Information in the Previously Inaccessible Supra-tc Window of Nanoseconds to Microseconds by Solution NMR Spectroscopy

David Ban, T. Sabo, Christian Griesinger, Donghan Lee
2013 Molecules  
(motion up to 25 s).  ...  In the second section, the current state of the art for RD is analyzed, as well as the considerable progress toward pushing the sensitivity of RD further into the supra- c scale by up to a factor of two  ...  The next step is to assign a specific rate to this motion.  ... 
doi:10.3390/molecules181011904 pmid:24077173 fatcat:uywtiwvuanajrmpxtfxc5ccyxi

Vision-Based Estimation of Airborne Target Pseudobearing Rate using Hidden Markov Model Filters

John Lai, Jason J. Ford, Peter O'Shea, Luis Mejias
2013 IEEE Transactions on Aerospace and Electronic Systems  
Abstract This paper considers the problem of estimating the pseudo-bearing rate information of an airborne target based on measurements from a vision sensor.  ...  Novel image speed and heading angle estimators are presented that exploit image morphology, hidden Markov model (HMM) filtering, and relative entropy rate (RER) concepts to allow pseudo-bearing rate information  ...  6) elements to describe target motion of up to 2 pixels per frame.  ... 
doi:10.1109/taes.2013.6621806 fatcat:d6yappjksbe4phpdl6w6i4a5p4

Modeling Two-Person Segmentation and Locomotion for Stereoscopic Action Identification: A Sustainable Video Surveillance System

Nida Khalid, Munkhjargal Gochoo, Ahmad Jalal, Kibum Kim
2021 Sustainability  
After optimization, a neuro-fuzzy classifier is used for classification and recognition.  ...  Human actions are tracked according to four features, namely, (1) geodesic distance; (2) 3D Cartesian-plane features; (3) joints Motion Capture (MOCAP) features and (4) way-points trajectory generation  ...  Motion information from the two interacting persons is retained via a frame differencing technique that is used to take the differences in 3D shapes created between two consecutive frames.  ... 
doi:10.3390/su13020970 fatcat:njracv7xbnguzdjl27xhjxfo2y

Stochastic Remote Sensing Event Classification over Adaptive Posture Estimation via Multifused Data and Deep Belief Network

Munkhjargal Gochoo, Israr Akhter, Ahmad Jalal, Kibum Kim
2021 Remote Sensing  
Using a charged system search, we optimized our feature vector and deep belief network.  ...  After that, we performed human body part detection and used a unified pseudo-2D stick model for adaptive posture estimation.  ...  [71] designed a novel framework for human posture estimation via a multidimensional feature vector, human body point identification.  ... 
doi:10.3390/rs13050912 fatcat:wkkjfbfhk5a5bnnuzlh2wdemxm

Guest Editorial: Special Section on Image/Video Compression and Processing for Visual Communications

Touradj Ebrahimi
1998 Journal of Electronic Imaging (JEI)  
A novelty of the approach is that the motion compensation error corresponding to different block-sizes for representing the motion vectors are actually coded to determine their true impact on the overall  ...  Oh and Lee, in ''Block-matching algorithm based on dynamic adjustment of search window for low bit-rate video coding,'' present a novel motion estimation technique based on a dynamic search window which  ...  He has authored and co-authored over 120 refereed papers and 20 US patents either pending or granted in image/video compres-sion and communications, multimedia, wireless networking, satellite communications  ... 
doi:10.1117/1.482602 fatcat:dbzdkozkljda7cdrw5btw2rwfe

Intelligent Power Grid Video Surveillance Technology Based on Efficient Compression Algorithm Using Robust Particle Swarm Optimization

Hongyang He, Yue Gao, Yong Zheng, Yining Liu, N. Venkateswaran
2021 Wireless Power Transfer  
A massive collection of surveillance films was compressed at a 50% higher rate using the suggested approach than with existing methods.  ...  A novel compression technique for video inputs from power grid monitoring equipment is described in this study.  ...  initial codebook is generated using a background removal technique that extracts motion items from frames.  ... 
doi:10.1155/2021/8192582 fatcat:fqod7wndjna6vf5atgrepq42nm
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