Abstract
In this paper, we propose an automated adaptive solution to generate logical, accurate and detailed tree-structure outline for video-based online lectures, by extracting the attached slides and reconstructing their content. The proposed solution begins with slide-transition detection and optical character recognition, and then proceeds by a static method of analyzing the layout of single slide and the logical relations within the slides series. Some features about the under-processing slides series, such as a fixed title position, will be figured out and applied in the adaptive rounds to improve the outline quality. The result of our experiments shows that the general accuracy of the final lecture outline reaches 85 %, which is about 13 % higher than the static method.
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Notes
- 1.
The copyright of the example slides belongs to original authors: Mr. Paul Cockshott, Prof. Audun Jøsang & Prof. Thomas Neumann.
- 2.
The copyright of the example slides belongs to original authors: Prof. Rudi Studer, Mr. Paul Cockshott & Prof. Gil Rosenman.
- 3.
The lecture (ID = ‘id’) is in http://www.tele-task.de/archive/lecture/overview/id/.
- 4.
https://drive.google.com/folderview?id=0B13Cc1a7ebTufmV6WFRCbmxPYllxR3 hYNE1SRUtWN3hxZl9tdHBPaHU0THZwOXVpM29sZEE&usp=sharing.
References
Grabe, M., Christopherson, K.: Optional student use of online lecture resources: resource preferences, performance and lecture attendance. J. Comput. Assist. Learn. 24(1), 1–10 (2008)
Lonn, S., Teasley, S.D.: Saving time or innovating practice: investigating perceptions and uses of learning management systems. Comput. Educ. 53(3), 686–694 (2009)
Che, X., Luo, S., Wang, C., Meinel, C.: An attempt at mooc localization for chinese-speaking users. Int. J. Inf. Educ. Technol. 6(2), 90 (2016)
Zhang, J., Chan, R.H.Y., Fung, P., Cao, L.: A comparative study on speech summarization of broadcast news and lecture speech. In: Interspeech. pp. 2781–2784. Citeseer (2007)
Onishi, M., Izumi, M., Fukunaga, K.: Blackboard segmentation using video image of lecture and its applications. In: 15th International Conference on Pattern Recognition, Proceedings, vol. 4, pp. 615–618. IEEE (2000)
Hill, A., Arford, T., Lubitow, A., Smollin, L.M.: Im ambivalent about it the dilemmas of powerpoint. Teach. Sociol. 40(3), 242–256 (2012)
Levasseur, D.G., Kanan Sawyer, J.: Pedagogy meets powerpoint: a research review of the effects of computer-generated slides in the classroom. Rev. Commun. 6(1–2), 101–123 (2006)
Li, K., Wang, J., Wang, H., Dai, Q.: Structuring lecture videos by automatic projection screen localization and analysis. IEEE Trans. Pattern Anal. Mach. Intell. 37(6), 1233–1246 (2015)
Schroth, G., Cheung, N.M., Steinbach, E., Girod, B.: Synchronization of presentation slides and lecture videos using bit rate sequences. In: 18th IEEE International Conference on Image Processing (ICIP), pp. 925–928. IEEE (2011)
Yang, H., Siebert, M., Luhne, P., Sack, H., Meinel, C.: Lecture video indexing and analysis using video ocr technology. In: 2011 Seventh International Conference on Signal-Image Technology and Internet-Based Systems (SITIS), pp. 54–61. IEEE (2011)
Atapattu, T., Falkner, K., Falkner, N.: Automated extraction of semantic concepts from semi-structured data: supporting computer-based education through the analysis of lecture notes. In: Liddle, S.W., Schewe, K.-D., Tjoa, A.M., Zhou, X. (eds.) DEXA 2012, Part I. LNCS, vol. 7446, pp. 161–175. Springer, Heidelberg (2012)
Yang, H., Gruenewald, F., Meinel, C.: Automated extraction of lecture outlines from lecture videos-a hybrid solution for lecture video indexing. In: Proceedings of 4th International Conference on Computer Supported Education (CSEDU), pp. 13–22 (2012)
Che, X., Yang, H., Meinel, C.: Tree-structure outline generation for lecture videos with synchronized slides. In: 2013 Second International Conference on e-Learning and e-Technologies in Education (ICEEE), pp. 87–92. IEEE (2013)
Levenshtein, V.I.: Binary codes capable of correcting deletions, insertions and reversals. In: Soviet physics doklady, vol. 10, p. 707 (1966)
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Che, X., Yang, H., Meinel, C. (2015). Adaptive E-Lecture Video Outline Extraction Based on Slides Analysis. In: Li, F., Klamma, R., Laanpere, M., Zhang, J., Manjón, B., Lau, R. (eds) Advances in Web-Based Learning -- ICWL 2015. ICWL 2015. Lecture Notes in Computer Science(), vol 9412. Springer, Cham. https://doi.org/10.1007/978-3-319-25515-6_6
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DOI: https://doi.org/10.1007/978-3-319-25515-6_6
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