請用此 Handle URI 來引用此文件：
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/4992完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 吳家麟(Ja-Ling Wu) | |
| dc.contributor.author | Hao-Kai Wen | en |
| dc.contributor.author | 聞浩凱 | zh_TW |
| dc.date.accessioned | 2021-05-15T17:50:48Z | - |
| dc.date.available | 2016-09-03 | |
| dc.date.available | 2021-05-15T17:50:48Z | - |
| dc.date.copyright | 2014-09-03 | |
| dc.date.issued | 2014 | |
| dc.date.submitted | 2014-08-19 | |
| dc.identifier.citation | [1] U. Gargi, R. Kasturi, and S. H. Strayer. Performance characterization of videoshot-
change detection methods. Circuits and Systems for Video Technology, IEEE Transactions on, 10(1):1–13, 2000. [2] J. Harding, C. Mackintosh, A. Hahn, and D. James. Classification of aerial acrobatics in elite half-pipe snowboarding using body mounted inertial sensors. In The Engineering of Sport 7, pages 447–456. Springer Paris, 2008. [3] T. Holleczek, J. Schoch, B. Arnrich, and G. Troster. Recognizing turns and other snowboarding activities with a gyroscope. In Wearable Computers (ISWC), 2010 International Symposium on, pages 1–8. IEEE, 2010. [4] I. Koprinska and S. Carrato. Temporal video segmentation: A survey. Signal processing: Image communication, 16(5):477–500, 2001. [5] H. Li, J. Tang, S. Wu, Y. Zhang, and S. Lin. Automatic detection and analysis of player action in moving background sports video sequences. Circuits and Systems for Video Technology, IEEE Transactions on, 20(3):351–364, 2010. [6] T. Liu, Z. Yuan, J. Sun, J. Wang, N. Zheng, X. Tang, and H.-Y. Shum. Learning to detect a salient object. IEEE trans. PAMI, 33(2), 2011. [7] J. Ning, L. Zhang, D. Zhang, and C. Wu. Robust mean-shift tracking with corrected background-weighted histogram. Computer Vision, IET, 6(1):62–69, January 2012. [8] N. Otsu. A threshold selection method from gray-level histograms. Automatica, 11(285-296):23–27, 1975. [9] J. Turnbull, J. W. Keogh, and A. E. Kilding. Strength and conditioning considerations for elite snowboard half pipe. Open Sports Medicine Journal, 5:1–11, 2011. [10] L. Xie, S.-F. Chang, A. Divakaran, and H. Sun. Structure analysis of soccer video with hidden markov models. In Acoustics, Speech, and Signal Processing (ICASSP), 2002 IEEE International Conference on, volume 4, pages IV–4096. IEEE, 2002. [11] J. Zhang, J. Qiu, X. Wang, and L. Wu. Representation of the player action in sport videos. In Signal and Information Processing Association Annual Summit and Conference (APSIPA), 2013 Asia-Pacific, pages 1–4. IEEE, 2013. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/4992 | - |
| dc.description.abstract | 本文中，一個低成本和高效率的系統性自動分析半管運動轉播影片方法被提出來。除了場地顏色覆蓋比率，我們發現玩家區域使用顯著目標偵測機制可面對半管運動影片模糊場景的挑戰。此外，基於現有的MPEG 壓縮的影片原生的運動向量（motion vector）我們提出一種可用於偵測旋轉（spin）事件的新穎且有效的方法。實驗結果表明，該系統能有效在半管影片中識別難以被檢測到的旋轉（spin）和滑行（grind）等事件。 | zh_TW |
| dc.description.abstract | In this work, a low-cost and efficient system is proposed to automatically analyze the halfpipe sports broadcasting videos. In addition to the court color ratio information, we find the player region by using salient object detection mechanisms for facing the challenge of motion blurred scenes in HP videos. Besides, a novel and efficient method for detecting the spin event is proposed on the basis of native motion vectors existing in MPEG compressed video. Experimental results show that the proposed system is effective in recognizing the hard-to-be-detected spin and grind events in halfpipe videos. | en |
| dc.description.provenance | Made available in DSpace on 2021-05-15T17:50:48Z (GMT). No. of bitstreams: 1 ntu-103-R01922083-1.pdf: 6839965 bytes, checksum: 59557a59e6cdfcd38e45bdc52ce9b6c3 (MD5) Previous issue date: 2014 | en |
| dc.description.tableofcontents | 口試委員會審定書i
誌謝ii 摘要iii Abstract iv 1 Introduction 1 1.1 What is a Halfpipe? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 What is a Trick? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.3 How to Learn a Trick . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4 The Problem of Watching Halfpipe Broadcasting Videos . . . . . . . . . 5 1.5 How to Solve Watching Halfpipe Broadcasting Videos Problems . . . . . 6 1.6 Challenges of Event Detection in Halfpipe Videos . . . . . . . . . . . . . 6 2 Related Work 7 3 Proposed Method 9 3.1 Highest Point Detection and Trick Segmentation . . . . . . . . . . . . . . 9 3.1.1 Noise Elimination . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1.2 Peak and Valley Detection . . . . . . . . . . . . . . . . . . . . . 10 3.2 Player Detection and Tracking . . . . . . . . . . . . . . . . . . . . . . . 10 3.3 Spin Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.4 Grind Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4 Results and Discusion 13 4.1 Cut Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.2 Highest Point Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.3 Spin Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.4 Grind Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 5 Conclusion and Future Work 19 Bibliography 21 | |
| dc.language.iso | en | |
| dc.subject | 動作辨識 | zh_TW |
| dc.subject | 半管 | zh_TW |
| dc.subject | 運動影片 | zh_TW |
| dc.subject | 事件偵測 | zh_TW |
| dc.subject | action recognition | en |
| dc.subject | halfpipe | en |
| dc.subject | vert ramp | en |
| dc.subject | sports video | en |
| dc.subject | event detection | en |
| dc.title | 半管運動電視轉播影片之事件偵測技術 | zh_TW |
| dc.title | Event Detection in Halfpipe Sports Broadcasting Videos | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 102-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 陳文進(Wen-Chin Chen),胡敏君(Min-Chun Hu),鄭文皇(Wen-Huang Cheng) | |
| dc.subject.keyword | 半管,運動影片,事件偵測,動作辨識, | zh_TW |
| dc.subject.keyword | halfpipe,vert ramp,sports video,event detection,action recognition, | en |
| dc.relation.page | 22 | |
| dc.rights.note | 同意授權(全球公開) | |
| dc.date.accepted | 2014-08-19 | |
| dc.contributor.author-college | 電機資訊學院 | zh_TW |
| dc.contributor.author-dept | 資訊工程學研究所 | zh_TW |
| 顯示於系所單位： | 資訊工程學系 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-103-1.pdf | 6.68 MB | Adobe PDF | 檢視/開啟 |
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