SlideSearch: Slide-to-Lecture-Video Search System on ClassX Database
نویسنده
چکیده
A slide-to-lecture-video search system is implemented on Android tablet. The search system gets video clips from the SCPD database. Previous research on Fisher Vector and Residual Enhanced Visual Vector are combined to generate compact index for each database image. An augmented database of clean slide images is used to exploit the temporal redundancy of videos. Original database of video keyframes and augmented database of slides are compared and experiments show using augmented database can achieve significant memory reduction and precision increase.
منابع مشابه
Building and Indexing a Distributed Multimedia Presentation Archive Using SMIL
This paper proposes an approach to the problem of generating metadata for composite mixed-media digital objects by appropriately combining and exploiting existing knowledge or metadata associated with the individual atomic components which comprise the composite object. Using a distributed collection of multimedia learning objects, we test this proposal by investigating mechanisms for capturing...
متن کاملPresentation Video Retrieval using Automatically Recovered Slide and Spoken Text
Video is becoming a prevalent medium for e-learning. Lecture videos contain text information in both the visual and aural channels: the presentation slides and lecturer’s speech. This paper examines the relative utility of automatically recovered text from these sources for lecture video retrieval. To extract the visual information, we apply video content analysis to detect slides and optical c...
متن کاملA Korean Spoken Document Retrieval System for Lecture Search
In this paper, we introduced a Korean spoken document retrieval system for lecture search. We automatically build a general inverted index table from spoken document transcriptions, and we extract additional information from textbooks or slide notes related to the lecture. We integrate these two sources for a search process. The speech corpus used in our system is from a highschool mathematics ...
متن کاملVector graphics for web lectures: experiences with Adobe Flash 9 and SVG
Vector graphics are an ideal content format for slide based lecture recordings. File sizes can be kept small and graphics can be displayed in superior quality. Information about text and slide objects is stored symbolically which allows texts to be searched and objects on slides to be used interactively, e.g. for navigation purposes. The use of vector graphics for web lectures is, however, a tr...
متن کاملAutomatic Explanation Spot Estimation Method Targeted at Text and Figures in Lecture Slides
Because of the spread of the Internet in recent years, e-learning, which is a form of learning through the Internet, has been used in school education. Many lecture videos delivered at The Open University of Japan show lecturers and lecture slides alternately. In such video style, it is hard to understand where on the slide the lecturer is explaining. In this paper, we examined methods to autom...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015