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Real-time and accurate extrinsic camera parameter estimation using feature landmark database for augmented reality

Takafumi Taketomi, Tomokazu Sato, Naokazu Yokoya
2011 Computers & graphics  
In the field of augmented reality (AR), many kinds of vision-based extrinsic camera parameter estimation methods have been proposed to achieve geometric registration between real and virtual worlds.  ...  In this paper, we achieve fast and accurate feature landmark-based camera parameter estimation by adopting the following approaches.  ...  Acknowledgments This research is supported in part by the ''Ambient Intelligence'' project Granted by the Ministry of Education, Culture, Sports, Science and Technology.  ... 
doi:10.1016/j.cag.2011.04.007 fatcat:yca3yocqfbcrtek47jwo7s5uae

Real-time geometric registration using feature landmark database for augmented reality applications

Takafumi Taketomi, Tomokazu Sato, Naokazu Yokoya, Ian E. McDowall, Margaret Dolinsky
2009 The Engineering Reality of Virtual Reality 2009  
In this study, we realize real-time and manual-initialization free camera parameter estimation based on feature landmark database.  ...  In this method, extrinsic camera parameters are estimated from corresponding landmarks and image features.  ...  In this study, in order to realize real-time and manual-initialization free camera parameter estimation using a feature landmark database, we reduce the computational cost for matching process, and an  ... 
doi:10.1117/12.805748 fatcat:ph5dzgybqve7tmbo67jbsqmdya

Real-time camera position and posture estimation using a feature landmark database with priorities

Takafumi Taketomi, Tomokazu Sato, Naokazu Yokoya
2008 Pattern Recognition (ICPR), Proceedings of the International Conference on  
As one of these methods, an extrinsic camera parameter estimation method that uses pre-constructed feature landmark database has been studied.  ...  In this method, extrinsic camera parameters of video images are estimated from correspondences between landmarks and image features.  ...  Acknowledgement This research is supported by Core Research for Evolutional Science and Technology (CREST) of Japan Science and Technology Agency (JST), and Strategic Information and Communications R&D  ... 
doi:10.1109/icpr.2008.4761563 dblp:conf/icpr/TaketomiSY08 fatcat:c5c2rz5jyzgehbdftmvn4nayme

Estimating Camera Position and Posture by Using Feature Landmark Database [chapter]

Motoko Oe, Tomokazu Sato, Naokazu Yokoya
2005 Lecture Notes in Computer Science  
Estimating camera position and posture can be applied to the fields of augmented reality and robot navigation.  ...  This paper proposes a vision-based camera position and posture estimation method for large environments, which does not require sensors and artificial markers by detecting natural feature points from image  ...  As a future work, camera position and posture estimation needs to be performed in real-time for use in augmented reality applications and robot navigations.  ... 
doi:10.1007/11499145_19 fatcat:qabp23uekvbdjc6wrpfipdxfte

Special Section on Mobile Augmented Reality

Ronald Azuma, Mark Billinghurst, Gudrun Klinker
2011 Computers & graphics  
Real time and accurate extrinsic camera parameter estimation using feature landmark database for augmented reality. Computers and Graphics 2011;35(4):768-77. doi:10.1016/ j.cag.2011.04.007.  ...  After this database is constructed, landmark tracking can be used in an online stage to provide wide-area outdoor tracking for mobile AR applications. Gee et al.  ... 
doi:10.1016/j.cag.2011.05.002 fatcat:haeqlp7fq5dtvigxl4f2cmmely

Real-time global localization with a pre-built visual landmark database

Zhiwei Zhu, Taragay Oskiper, Supun Samarasekera, Rakesh Kumar, Harpreet S. Sawhney
2008 2008 IEEE Conference on Computer Vision and Pattern Recognition  
In particular, we study the parameters of building a landmark database rapidly and utilizing that database online for realtime accurate global localization.  ...  We present results of our study on both synthetic and real datasets that help us determine critical design parameters for the landmark database and the achievable accuracies of our proposed system.  ...  Introduction Real-time 6 degree-of-freedom (DOF) pose estimation of moving cameras has been studied for several decades with numerous applications in robotics, vehicle navigation and augmented reality.  ... 
doi:10.1109/cvpr.2008.4587711 dblp:conf/cvpr/ZhuOSKS08 fatcat:k4mstd6nijdvzn5bllvoh4isku

Markerless Endoscopic Registration and Referencing [chapter]

Christian Wengert, Philippe C. Cattin, John M. Duff, Charles Baur, Gábor Székely
2006 Lecture Notes in Computer Science  
In order to cope with the near real-time requirements for referencing, we use a novel, efficient 3D point management method during 3D model reconstruction.  ...  Accurate patient registration and referencing is a key element in navigated surgery. Unfortunately all existing methods are either invasive or very time consuming.  ...  Point Database Efficient and consistent data management is an important pre-requisite for the proposed near real-time 3D reconstruction method.  ... 
doi:10.1007/11866565_100 fatcat:ucdo6tzr2rc2lbh57puh6b6udi

Calibration requirements and procedures for a monitor-based augmented reality system

M. Tuceryan, D.S. Greer, R.T. Whitaker, D.E. Breen, C. Crampton, E. Rose, K.H. Ahlers
1995 IEEE Transactions on Visualization and Computer Graphics  
Augmented reality e n tails the use of models and their associated renderings to supplement information in a real scene.  ...  In this paper we identify the calibration steps necessary to build a computer model of the real world and then, using the monitor-based augmented reality system developed at ECRC Grasp as an example, we  ...  This work is nancially supported by Bull SA, ICL PLC, and Siemens AG. We w ould also like thank Dieter Koller for providing extensions and error statistics for camera calibration.  ... 
doi:10.1109/2945.466720 fatcat:uwgppjpidndzjfdjajjtisl4ka

Camera pose estimation under dynamic intrinsic parameter change for augmented reality

Takafumi Taketomi, Kazuya Okada, Goshiro Yamamoto, Jun Miyazaki, Hirokazu Kato
2014 Computers & graphics  
By using a novel energy function, our method can accurately estimate intrinsic and extrinsic camera parameters.  ...  In video see-through augmented reality (AR) technology, image-based methods for estimating the camera pose are used to superimpose virtual objects onto the real environment.  ...  In AR, 2D-3D corresponding pairs are obtained using a 3D model of the environment or a feature landmark database [12, 13, 14].  ... 
doi:10.1016/j.cag.2014.07.003 fatcat:i75rl7tjurehjplta4tk5x56ou

Computer Vision Technology Applied to MR-Based Pre-visualization in Filmmaking [chapter]

Hideyuki Tamura, Takashi Matsuyama, Naokazu Yokoya, Ryosuke Ichikari, Shohei Nobuhara, Tomokazu Sato
2011 Lecture Notes in Computer Science  
For capturing an actor's action, we applied 3D Video, which is a technology that allows one to reconstruct an image seen from any viewpoint in real time from video images taken by multiple cameras.  ...  MR-PreViz makes it possible to merge the real background and the computer-generated humans and creatures in an open set or at an outdoor location.  ...  Introduction Mixed reality (MR) which merges real and virtual worlds in real-time, is an advanced form of virtual reality (VR) [1] . The word "augmented reality" (AR) has the same meaning as MR.  ... 
doi:10.1007/978-3-642-22819-3_1 fatcat:muanh5qhlbem7df23tkbdqvtia

Real-Time 3D Face Reconstruction and Gaze Tracking for Virtual Reality

Shu-Yu Chen, Lin Gao, Yu-Kun Lai, Paul L. Rosin, Shihong Xia
2018 2018 IEEE Conference on Virtual Reality and 3D User Interfaces (VR)  
In this paper, we introduce a novel real-time system that is able to capture and reconstruct 3D faces wearing HMDs and robustly recover eye gaze.  ...  A natural need for truly immersive VR is to allow bidirectional communication: the user should be able to interact with the virtual world using facial expressions and eye gaze, in addition to traditional  ...  For this, we use a multicamera self-calibration method [6] to get the intrinsic and extrinsic parameters.  ... 
doi:10.1109/vr.2018.8446494 dblp:conf/vr/Chen0LRX18 fatcat:omngeztb25g6tbncnijucdackq

High-precision localization using visual landmarks fused with range data

Zhiwei Zhu, Han-Pang Chiu, Taragay Oskiper, Saad Ali, Raia Hadsell, Supun Samarasekera, Rakesh Kumar
2011 CVPR 2011  
Finally, a disk-cache-mechanism is proposed to obtain the real-time performance when the size of the landmark grows for a large-scale area.  ...  In order to further improve the accuracy and robustness, landmark matching is fused with a multi-stereo based visual odometry system to estimate the camera pose in two aspects.  ...  Application for Augmented Reality Augmented reality training systems using Head Mounted Displays (HMDs) require very high precision knowledge of the 3D location and 3D orientation of the user's head.  ... 
doi:10.1109/cvpr.2011.5995463 dblp:conf/cvpr/ZhuCOAHSK11 fatcat:idaflab7rndw7fjsho3ok5rxwy

Digital Twin: Acquiring High-Fidelity 3D Avatar from a Single Image [article]

Ruizhe Wang, Chih-Fan Chen, Hao Peng, Xudong Liu, Oliver Liu, Xin Li
2019 arXiv   pre-print
Our proposed system of rendering 3D avatars from 2D images has a wide range of applications from virtual/augmented reality (VR/AR) and telepsychiatry to human-computer interaction and social networks.  ...  The 3D face geometry is further refined by a non-rigid deformation process to more accurately capture facial landmarks before texture projection.  ...  GanFit [14] used an additional deep facial identity loss to the commonly used landmark and pixel intensity losses. In [16], 3DMM parameters were directly learned from deep facial features.  ... 
arXiv:1912.03455v1 fatcat:az3qci3pozbfpokn67yypyqtxi

MOARSLAM: Multiple Operator Augmented RSLAM [chapter]

John G. Morrison, Dorian Gálvez-López, Gabe Sibley
2016 Springer Tracts in Advanced Robotics  
The map fusion benefits are demonstrated with an example augmented reality application.  ...  For long-term online operation, the merging of maps from heterogeneous devices must be fast and allow for scalable growth in both the number of clients and the size of the map.  ...  As this paper shows, global relaxation is not required for consistent metrically accurate multi-device augmented reality.  ... 
doi:10.1007/978-4-431-55879-8_9 fatcat:tt64bvkyibacpax5vmcrtbsy4i

A Real-Time Augmented Reality System for Industrial Tele-Training

Pierre Boulanger, Nicolas D. Georganas, Xiaowei Zhong, Peiran Liu, Sabry F. El-Hakim, Armin Gruen, James S. Walton
2003 Videometrics VII  
A new technique for identifying real world objects and estimating their coordinates in 3D space is introduced.  ...  Augmented Reality (AR) is a departure from standard virtual reality in a sense that it allows users to see computer generated virtual objects superimposed over the real world through the use of see-through  ...  The contributions of staff and resources of the National Research Council of Canada are also gratefully acknowledged.  ... 
doi:10.1117/12.473350 fatcat:nql7gvvh7vhpflbd752z5v5iqq
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