13,233 Hits in 5.9 sec

Optimal 2-D hierarchical content-based mesh design and update for object-based video

I. Celasun, A.M. Tekalp
2000 IEEE transactions on circuits and systems for video technology (Print)  
To this effect, this paper proposes an optimized design of hierarchical 2D content-based meshes with a shape-adaptive simplification and temporal update mechanism for object based video.  ...  The proposed optimized and temporally updated hierarchical mesh representation can be applied in object-based video coding, retrieval and manipulation.  ...  ACKNOWLEDGMENTS The authors wish to acknowledge that Erdal Ilgaz and Mete H. Gökçetekin have provided valuable helps on some of the implementations of the methods proposed in this paper.  ... 
doi:10.1109/76.875517 fatcat:64kkaaqykng3xbvqfitrij67nq

Deep Learning Assisted Active Net Segmentation of Vehicles for Smart Traffic Management

S Shobha B, R Deepu
2021 Global Transitions Proceedings  
The gain function is able to compensate for the shadow and illumination problems affecting the vehicle segmentation.  ...  In this work, we propose a deep learning adapted active net segmentation model for vehicle segmentation.  ...  The result from CNN is a mesh with holes for all background and mesh nodes are only on the objects. Some mesh nodes and links do cross the boundary, which must be detected and removed.  ... 
doi:10.1016/j.gltp.2021.08.024 fatcat:vrenogafmvcmlobqdib5cf63te

Traversable Ground Surface Segmentation and Modeling for Real-Time Mobile Mapping

Wei Song, Seoungjae Cho, Kyungeun Cho, Kyhyun Um, Chee Sun Won, Sungdae Sim
2014 International Journal of Distributed Sensor Networks  
Finally, we generate a texture mesh for ground surface representation by mapping the triangles in the terrain mesh onto the captured video images.  ...  This paper presents a real-time traversable ground surface segmentation and intuitive representation system for remote operation of mobile robot.  ...  Acknowledgment This work was supported by the Agency for Defense Development, Republic of Korea.  ... 
doi:10.1155/2014/795851 fatcat:w7po56gay5gmjkyvydrpjafhii

2-D mesh-based video object segmentation and tracking with occlusion resolution

Işıl Celasun, A.Murat Tekalp, Mete H Gökçetekin, Derin M Harmancı
2001 Signal processing. Image communication  
This paper integrates fully automatic video object segmentation and tracking including detection and assignment of uncovered regions in a 2-D mesh-based framework.  ...  Particular contributions of this work are i) a novel video object segmentation method that is posed as a constrained maximum contrast path search problem along the edges of a 2-D triangular mesh, and ii  ...  In this paper, we propose a unified 2-D mesh-based approach for fully automatic video object segmentation and tracking, which fuses node-based motion and triangle-based color information instead of using  ... 
doi:10.1016/s0923-5965(00)00055-2 fatcat:a23fiu2ldzhvnitd3gxda23hdi

Silhouettes from Real Objects Enable Realistic Interactions with a Virtual Human in Mobile Augmented Reality

Hanseob Kim, Ghazanfar Ali, Andréas Pastor, Myungho Lee, Gerard J. Kim, Jae-In Hwang
2021 Applied Sciences  
This way user perceives the interaction with virtual proxies as interaction with real objects. However, catering to environment change, shape deformation, and view update is not a trivial task.  ...  We also conducted a pilot study using our approach and reported significant improvements in user perception of spatial awareness and presence for realistic interactions with a virtual human.  ...  We also thank the reviewers for their valuable contributions. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app11062763 fatcat:lj3c6jtnx5fdzox6nlpovhzjai

Popularity Awareness in Temporal-DHT for P2P-based Media Streaming Applications

Abhishek Bhattacharya, Zhenyu Yang, Deng Pan
2011 2011 IEEE International Symposium on Multimedia  
The inherent drawbacks of tracker-server based approach are obvious due to scalability and bottleneck issues, which prompted us to pursue a structured P2P based proposition such as Distributed Hash Tables  ...  The challenging issue of accommodating a large number of update operations with the continuous change of user's playing position in DHT-based overlay is addressed in our previous work by the concept of  ...  The basic mechanism involves the adaptation of update operations for minimizing the search cost of popular video segments i.e., the more popular segments increase the updation rate by reducing the value  ... 
doi:10.1109/ism.2011.46 dblp:conf/ism/BhattacharyaYP11 fatcat:btwy2ggwbfcwxiqz2nf64xnwga

Interactive modelling for AR applications

John Bastian, Ben Ward, Rhys Hill, Anton van den Hengel, Anthony Dick
2010 2010 IEEE International Symposium on Mixed and Augmented Reality  
The method proceeds by segmenting the object in every image as it is captured and using the calculated silhouette to update the current shape estimate.  ...  Figure 1 : Our method allows the user to recover the 3D shape of a selected object and insert copies of the object into the AR environment.  ...  Segmentation methods based on colour alone, however, are not directly suitable for segmenting an object from a video stream because the object and the background colour distributions are likely to change  ... 
doi:10.1109/ismar.2010.5643570 dblp:conf/ismar/BastianWHHD10 fatcat:tg3e5z2ycfgn5l7k6hmbsviaru

Direct Photometric Alignment by Mesh Deformation

Kaimo Lin, Nianjuan Jiang, Shuaicheng Liu, Loong-Fah Cheong, Minh Do, Jiangbo Lu
2017 2017 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
Mesh-based warping methods achieve a good balance between computational complexity and model flexibility.  ...  The choice of motion models is vital in applications like image/video stitching and video stabilization.  ...  Here we use the same blending method as in [12] for fair comparison. can also be used for dynamic object segmentation.  ... 
doi:10.1109/cvpr.2017.289 dblp:conf/cvpr/LinJLCDL17 fatcat:lcantkkuorhbzoemren6lukoym

Semantic Interaction in Augmented Reality Environments for Microsoft HoloLens [article]

Peer Schüett, Max Schwarz, Sven Behnke
2021 arXiv   pre-print
The results are fused onto the mesh; prominent object segments are identified and displayed in 3D to the user. Finally, the user can trigger actions by gesturing at the object.  ...  Augmented Reality is a promising technique for human-machine interaction.  ...  This work was funded by grant BE 2556/16-1 (Research Unit FOR 2535 Anticipating Human Behavior) of the German Research Foundation (DFG).  ... 
arXiv:2112.05846v1 fatcat:hyhqprkeungabhsxdmjsndxupy


2003 Digital Media Processing for Multimedia Interactive Services  
Foreground objects are modeled exploiting database objects. The appropriate textures are taken from the camera views and combined to form a multi-texture surface.  ...  To combine all views into a 3D model, moving objects are separated from static background first. Then a geometric model is built for the background.  ...  For vehicles, the extracted textures are mapped onto an appropriate mesh assuming that the mesh is similar to the real object. The position and orientation is derived from the 3D tracking procedure.  ... 
doi:10.1142/9789812704337_0078 fatcat:rkbq6jfpy5hsvmgzpwj2iu2uxa

Real-Time Terrain Storage Generation from Multiple Sensors towards Mobile Robot Operation Interface

Wei Song, Seoungjae Cho, Yulong Xi, Kyungeun Cho, Kyhyun Um
2014 The Scientific World Journal  
We integrate the large-scale 3D point clouds into a nonground PDB and a node-based terrain mesh using the CPU.  ...  A voxel-based flag map is proposed for incrementally registering large-scale point clouds in a terrain model in real time.  ...  Acknowledgment This work was supported by the Agency for Defense Development, Republic of Korea.  ... 
doi:10.1155/2014/769149 pmid:25101321 pmcid:PMC4101941 fatcat:4vanda7xdre7nlghvzslew3ey4

Towards unconstrained joint hand-object reconstruction from RGB videos [article]

Yana Hasson, Gül Varol, Ivan Laptev, Cordelia Schmid
2022 arXiv   pre-print
Our method relies on cues obtained with common methods for object detection, hand pose estimation and instance segmentation.  ...  Our work aims to obtain 3D reconstruction of hands and manipulated objects from monocular videos.  ...  la Recherche as part of the "Investissements d'avenir" program, reference ANR19-P3IA-0001 (PRAIRIE 3IA Institute), by Louis Vuitton ENS Chair on Artificial Intelligence, as well as gifts from Google and  ... 
arXiv:2108.07044v2 fatcat:akfvrpyyuje2zfu7wckoei3wse

Video coding algorithm based on image warping and nonrectangular DCT coding

Yung-Ming Chou, Hsueh-Ming Hang, Jan Biemond, Edward J. Delp III
1997 Visual Communications and Image Processing '97  
Three techniques are employed: motion compensation based on image warping, image segmentation and object tracking based on (mesh) nodal point adjustment, and nonrectangular DCT coding performed on the  ...  Object scalability is a new trend in video coding research. This paper presents an attempt of designing an object-oriented coding based on the notion of irregular mesh and image warping.  ...  Three techniques are employed: motion compensation based on image warping, image segmentation and object tracking based on (mesh) nodal point adjustment, and nonrectangular DCT coding performed on the  ... 
doi:10.1117/12.263228 fatcat:b5asazdfujg3zho7dxwo3hcwki

Moving Object Analysis Techniques In Videos - A Review

Gianetan Singh Sekhon
2012 IOSR Journal of Computer Engineering  
Many difficulties arises in tracking the objects due to abrupt object motion, changing appearance patterns of both the object and the scene, non-rigid object structures, object-to-object and object-to-scene  ...  It also discusses the important issues related to tracking including the use of object representation, tracking, and detection.  ...  Mohammed Sayed and Wael Badawy [11] , Presents a novel motion estimation method for mesh-based video motion tracking. The method called mesh-based square-matching (MB-SM) motion estimation method.  ... 
doi:10.9790/0661-0120712 fatcat:bj4xhuksynhydjtwsyhpi43s5a

3D Video Player System with Haptic Interaction based on Depth Image-Based Representation

Jongeun Cha, Sung-Yeol Kim, Yo-Sung Ho, Jeha Ryu
2006 IEEE transactions on consumer electronics  
In this paper, we propose a three-dimensional (3D) video player system that provides haptic interaction with objects in a video scene based on a depth image-based representation.  ...  With the proposed system, viewers can touch and explore the shape of objects visible in a scene via a three degree-of-freedom (DOF) haptic interface.  ...  For example, it is possible for viewers to touch and explore an object-of-interest such as a peculiar shaped object or the face of a famous actor.  ... 
doi:10.1109/tce.2006.1649668 fatcat:eknmolfcijbnbpudiho6ethbli
« Previous Showing results 1 — 15 out of 13,233 results