In this paper, we propose a novel solution for segmenting an instructional video into hierarchical topical sections. Incorporating the knowledge of education-oriented film theory with our previous study of expressive functions namely the content density and the thematic functions, we develop an algorithm to effectively structuralize an instructional video into a two-tiered hierarchy of topical sections at the main and sub-topic levels. Our experimental results on a set of ten industrial instructional videos demonstrate the validity of the detection scheme. Categories and Subject Descriptors J.m [Computer Applications]: Miscellaneous; ontent Analysis and Indexing]: Abstracting, Indexing Methods—Education-oriented Films General Terms Algorithms, Experimentation, Measurement Keywords Instructional films, topic detection/segmentation, media aesthetics, cinematic expressive functions, narrative structure
Dinh Q. Phung, Svetha Venkatesh, Chitra Dorai