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Scene-Aware Video Modeling and Compression

Georgios Georgiadis, Stefano Soatto
2012 2012 Data Compression Conference  
We describe a video compression methodology that exploits the structure of the data formation process, whereby the "source" is the scene, and the "channel" includes scaling and occlusion phenomena that  ...  are critical elements of image formation.  ...  This research was supported by DARPA KECoM N66001-11-C-4001 and DARPA MSEE.  ... 
doi:10.1109/dcc.2012.23 dblp:conf/dcc/GeorgiadisS12 fatcat:yr44zoovcfga3kbgyjfw3gjxaq

PSC-Net: Learning Part Spatial Co-occurrence for Occluded Pedestrian Detection [article]

Jin Xie and Yanwei Pang and Hisham Cholakkal and Rao Muhammad Anwer and Fahad Shahbaz Khan and Ling Shao
2020 arXiv   pre-print
Our PSC-Net exploits the topological structure of pedestrian and does not require part-based annotations or additional visible bounding-box (VBB) information to learn part spatial co-occurrence.  ...  Both inter and intra-part co-occurrence information contribute towards improving the feature representation for handling varying level of occlusions, ranging from partial to severe occlusions.  ...  To the best of our knowledge, we are the first to propose an approach based on GCN to capture both inter and intra-part spatial co-occurrence for occluded pedestrian detection.  ... 
arXiv:2001.09252v2 fatcat:75hjiwjpqjertpl7r3h5lcegey

Hyperpoints and Fine Vocabularies for Large-Scale Location Recognition

Torsten Sattler, Michal Havlena, Filip Radenovic, Konrad Schindler, Marc Pollefeys
2015 2015 IEEE International Conference on Computer Vision (ICCV)  
points shall be co-visible, can reliably find a locally unique 2D-3D point assignment.  ...  Structure-based localization is the task of finding the absolute pose of a given query image w.r.t. a pre-computed 3D model.  ...  Section 4 then details how image retrieval is used together with hyperpoints for structurebased localization, where Sections 4.3 and 4.4 explain how to exploit co-visibility information from the SfM process  ... 
doi:10.1109/iccv.2015.243 dblp:conf/iccv/SattlerHRSP15 fatcat:cxkfrxz3v5baxfjqeh5iclx5im

A frequency analysis of light transport

Frédo Durand, Nicolas Holzschuch, Cyril Soler, Eric Chan, François X. Sillion
2005 ACM Transactions on Graphics  
This extends previous work that considered either spatial or angular dimensions, and it offers a comprehensive treatment of both space and angle.  ...  We present a signal-processing framework for light transport. We study the frequency content of radiance and how it is altered by phenomena such as shading, occlusion, and transport.  ...  Acknowledgments We thank Jaakko Lehtinen, the reviewers of the Artis and MIT teams, as well as the SIGGRAPH reviewers for insightful feedback.  ... 
doi:10.1145/1073204.1073320 fatcat:izdxe5dfu5befnvxbleftgghyy

A frequency analysis of light transport

Frédo Durand, Nicolas Holzschuch, Cyril Soler, Eric Chan, François X. Sillion
2005 ACM SIGGRAPH 2005 Papers on - SIGGRAPH '05  
This extends previous work that considered either spatial or angular dimensions, and it offers a comprehensive treatment of both space and angle.  ...  We present a signal-processing framework for light transport. We study the frequency content of radiance and how it is altered by phenomena such as shading, occlusion, and transport.  ...  Acknowledgments We thank Jaakko Lehtinen, the reviewers of the Artis and MIT teams, as well as the SIGGRAPH reviewers for insightful feedback.  ... 
doi:10.1145/1186822.1073320 fatcat:wsbwnjefiva7vp7fr3ffdbmnza

Image-Based Localization Aided Indoor Pedestrian Trajectory Estimation Using Smartphones

Yan Zhou, Xianwei Zheng, Ruizhi Chen, Hanjiang Xiong, Sheng Guo
2018 Sensors  
In the process, the visibility and co-visibility information is adopted to improve the efficiency when searching for the correspondences from both sides.  ...  Vision-based localization has two main approaches, which are the simultaneous localization and mapping (SLAM) approaches such as Google Tango and image-based localization.  ...  Author Contributions: Yan Zhou conceived the experiments and wrote the paper; Xianwei Zheng and Ruizhi Chen devised the paper; Hanjiang Xiong cooperated to conceive the experiment; Sheng Guo contributed  ... 
doi:10.3390/s18010258 pmid:29342123 pmcid:PMC5795839 fatcat:3474ax677zffzd6jilxmny7q7q

Synthetic Aperture Radar Processing for Vessel Kinematics Estimation

Marco Reggiannini, Luigi Bedini
2018 Proceedings (MDPI)  
Wakes are visible in high resolution Synthetic Aperture Radar maps and bear information related to the kinematic variables of the vessel motion.  ...  This information can be exploited in decision procedures concerning maritime surveillance and ship traffic monitoring.  ...  The sampled signals and the estimated power spectral density for the wake in Figure 3 , are illustrated in Figure 8 . points loequation ted at co-.  ... 
doi:10.3390/proceedings2020091 fatcat:epml34j3ufd3bf63bhfeu6yy4a

Synthetic Aperture Radar Processing For Vessel Kinematics Estimation

Marco Reggiannini, Luigi Bedini
2018 Zenodo  
Migrant flow exploitation, unauthorized fishing and environmental pollution are a few examples of the issues that are related to current illegal ships' traffic.  ...  CosmoSky-Med-CSK) the wave perturbations generated by the ship body passage through the water are visible and can be exploited to describe in detail the vessel dynamics.  ... 
doi:10.5281/zenodo.1159153 fatcat:72662lsbv5f3zfiohgci6cdx5u

PSC-Net: learning part spatial co-occurrence for occluded pedestrian detection

Jin Xie, Yanwei Pang, Hisham Cholakkal, Rao Anwer, Fahad Khan, Ling Shao
2020 Science China Information Sciences  
Our PSC-Net exploits the topological structure of pedestrian and does not require part-based annotations or additional visible bounding-box (VBB) information to learn part spatial co-occurrence.  ...  Both inter and intra-part co-occurrence information contribute towards improving the feature representation for handling varying level of occlusions, ranging from partial to severe occlusions.  ...  Acknowledgements This work was supported by National Natural Science Foundation of China (Grant No. 61632018) and National Key R&D Program of China (Grant Nos. 2018AAA0102800, 2018AAA0102802).  ... 
doi:10.1007/s11432-020-2969-8 fatcat:35pnjruszrfz5jlcw4sznply4y

Comparison of Edge-Driven Algorithms for Model-Based Motion Estimation [chapter]

Hendrik Dahlkamp, Artur Ottlik, Hans-Hellmut Nagel
2006 Lecture Notes in Computer Science  
3D-model-based tracking offers one possibility to explicate the manner in which spatial coherence can be exploited for the analysis of image sequences.  ...  Subtle effects related to simplifications and approximations during the implementation of an approach thus may influence the aggregated result of tracking numerous vehicles even in the case where spatial  ...  Pece and stimulating remarks by the reviewers. These investigations have been partially supported by the European Union (FP5-project 'CogViSys', IST-2000-29404).  ... 
doi:10.1007/11676959_4 fatcat:yibwszdicze73lvvxt7rfve4fy

Deep Learning-based Occluded Person Re-identification: A Survey [article]

Yunjie Peng, Saihui Hou, Chunshui Cao, Xu Liu, Yongzhen Huang, Zhiqiang He
2022 arXiv   pre-print
Therefore, we review occlusion-related person Re-ID methods from the perspective of issues and solutions.  ...  ., position misalignment, scale misalignment, noisy information, and missing information. The occlusion-related methods addressing different issues are then categorized and introduced accordingly.  ...  The local features of an image are taken as nodes of a graph and HOReID designs a graph convolutional network with learnable adjacent matrices to exploit the more discriminative relation information among  ... 
arXiv:2207.14452v1 fatcat:egnltk4epndh5ovxaz3zocicim

Thermal 3D mapping for object detection in dynamic scenes

M. Weinmann, J. Leitloff, L. Hoegner, B. Jutzi, U. Stilla, S. Hinz
2014 ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
and (iv) a co-registration of 3D point cloud data and thermal information via a RANSAC-based EPnP scheme.  ...  Whereas modern range cameras simultaneously provide both range and intensity images with high frame rates, other devices can be used to obtain further information which could be quite valuable for tasks  ...  different image domains by exploiting wavelength independent properties as well as an image-based rejection strategy, and (iv) a co-registration of 3D point cloud data and thermal information based on  ... 
doi:10.5194/isprsannals-ii-1-53-2014 fatcat:izzjnjas7zaf3b65ujnbq7jvj4

LG-Mod: A Modified Local Gradient (LG) Method to Retrieve SAR Sea Surface Wind Directions in Marine Coastal Areas

Fabio M. Rana, Maria Adamo, Guido Pasquariello, Giacomo De Carolis, Sandra Morelli
2016 Journal of Sensors  
The novelty is that the dominant local wind direction and related accuracy are estimated using results derived from the Directional Statistics.  ...  This paper describes a novel SAR wind direction estimation method based on the computation of local gradients over quasi-linear and quasi-periodic structures detected by SAR imagery.  ...  A number of SAR-based wind retrieval algorithms have exploited Fourier analysis [20] [21] [22] [23] to provide wind direction from BLRs features with spatial resolution up to 10 km and accuracy ranging  ... 
doi:10.1155/2016/9565208 fatcat:3w4vt365czgjzfida2cyggdmom

Grey Scale Texture Classification Method Comparison Considering Object and Lighting Rotation

Karolina Nurzyńska, Mamoru Kubo, Ken-ichiro Muramoto
2013 Journal of clean energy technologies  
matrix, local binary pattern).  ...  This study addresses the statistical texture features as methods for texture classification.  ...  Next, the second order features consider additionally the spatial relations between the luminance intensities within image.  ... 
doi:10.7763/ijcte.2013.v5.639 fatcat:mi7bhcbx7zflbl4444hinrxn6a

A computational framework for determining stereo correspondence from a set of linear spatial filters [chapter]

David G. Jones, Jitendra Malik
1992 Lecture Notes in Computer Science  
We present a computational framework for stereopsis based on the outputs of linear spatial lters tuned to a range of orientations and scales.  ...  This approach goes beyond edge-based and area-based approaches by using a richer image description and incorporating several stereo cues that have previously been neglected in the computer vision literature  ...  We have demonstrated in this paper that convolution of the image with a bank of linear spatial lters at multiple scales and orientations provides an excellent substrate on which to base an algorithm for  ... 
doi:10.1007/3-540-55426-2_45 fatcat:4goqr3qq35hjfezfrpr2jjwbeq
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