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Research on Data Capture Technology in Soccer Videos
Shouzhong Zhang 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.1
Based on in-depth analyzing the calculation of web pages relevance to the topic and prediction algorithm. A focus crawler which is based on thesaurus classification is proposed, the algorithm pre-judgment the relevance to the topic through the analysis of page title, the pages which have high priority to the topic are first crawled, and the precision rate is improved. Experiment results show that the precision rate by the crawler which is based on thesaurus classification is improved, and the web pages which are relative to topic is good determined
Research on Effective Field Lines Detection and Tracking Algorithm in Soccer Videos
Shouzhong Zhang 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.7
A novel field line detection method is proposed based on the directional information of field line. First, the special character of modern soccer playfield is considered, and a novel soccer field model is introduced which includes offside assistant lines. By designing a directional filter, these field lines can be accurately detected. Moreover, the field line detection and tracking for a clip is developed, which can further improve the performance of field line detection. In this paper, we integrate the basic theories of multimedia analysis, pattern recognition and computer vision into content analysis for sports video analysis. Through exploring several components such as object detection, camera calibration and tactic analysis, a systematical system is built up. The proposed algorithms can be not only used for soccer video analysis but also used for other sports video analysis. It provides a promising method for general multimedia analysis.
Research on Camera Calibration in Football Broadcast Videos
Shouzhong Zhang 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.3
A novel continuous camera calibration algorithm is proposed, which can address the calibration for non-goal area of soccer video. By considering the fact that the position of main camera is stable, a novel continuous camera calibration algorithm is proposed for soccer video analysis. There are two stages for calibration: the first stage addresses the calibration only for goal area and the position of camera is computed and recorded, and then the second stage can address calibration for any area including non-goal area where the camera position is given at first stage. Thus, the proposed algorithm can address the calibration for non-goal area of soccer video, which cannot be addressed by traditional calibration algorithms since the inadequate of calibration objects.