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Title: Precise 3D measurements for tracked objects from synchronized stereo-video sequences
Authors: Agrafiotis, Panagiotis 
Georgopoulos, Andreas 
Doulamis, Anastasios D. 
Doulamis, Nikolaos D. 
Keywords: Tracking (position);Algorithms;State-of-the-art trackers
Category: Civil Engineering
Field: Engineering and Technology
Issue Date: 1-Jan-2014
Source: 10th International Symposium on Visual Computing, ISVC 2014; Las Vegas; United States; 8 December 2014 through 10 December 2014
Conference: International Symposium on Visual Computing (ISVC) 
Abstract: © Springer International Publishing Switzerland 2014. This paper presents a system suitable to perform precise and fast 3D measurements from synchronized stereo-video sequences and provide target’s georeference in a known reference system. To this direction we combine a robust tracker with photogrammetric techniques into a fast and reliable system. For tracking objects and people, we adopt and modify a stable human tracker able to cope efficiently with the trade-off between model stability and adaptability. For achieving accurate and precise 3D measurements, camera calibration was implemented in order to recover the intrinsic parameters of the cameras of the configuration. Finally, for precise and reliable calculation of the 3D trajectory of the moving person, we apply bundle adjustment for all frames. Bundle adjustment is a very accurate algorithm and has the advantages of being tolerant of missing data while providing a true Maximum Likelihood estimate. The results have been tested and evaluated in real life conditions for proving the robustness and the accuracy of the system.
Description: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Volume 8888, 2014, Pages 757-769
ISSN: 03029743
Type: Conference Papers
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

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