System for creating a capsule representation of an instructional video

A technology for video and video editing, applied in the use of detectable carrier information, color TV signal processing, instruments, etc., can solve problems such as inconsistency and time-consuming

Inactive Publication Date: 2012-07-25
INDIAN INSTITUTE OF TECHNOLOGY BOMBAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently, video previews are typically manually generated by video editors, a process that can be time-consuming and prone to inconsistencies

Method used

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  • System for creating a capsule representation of an instructional video
  • System for creating a capsule representation of an instructional video
  • System for creating a capsule representation of an instructional video

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Embodiment Construction

[0021] In the following detailed description, reference is made to the accompanying drawings which form a part hereof. In the drawings, similar symbols typically identify similar parts, unless context dictates otherwise. The exemplary embodiments described in the detailed description, drawings, and claims are not intended to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It should be understood that the aspects of the present disclosure described generally herein and illustrated in the accompanying drawings may be arranged, substituted, combined, divided, and designed in many different configurations as explicitly and implicitly disclosed herein.

[0022] This application describes example methods for creating a representation of a video that includes a "highlight" of the video. Therefore, the representation is a shorter video than the original video, which will f...

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Abstract

A method is provided that creates a lecture video capsule containing highlights of an original instructional video based on visual quality and content. The method includes segmenting and recognizing activities in the video using a hidden Markov model (HMM). The activities are classified into three categories: talking head, writing hand and slideshow. The talking head frames are classified as non- content frames, while the writing hand and slideshows are classified as content frames. A non-reference based objective quality assessment of the non-content frames is performed to detect high quality frames. Statistical parameters of an intensity histogram and a horizontal projection profile (HPP) of the content frames is used to derive an objective quality measure of the content frames that is used to extract high quality content frames. The selected high quality non-content and content frames form a video clip or capsule, which is a temporally compressed representation of the video.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority under 35 U.S.C § 119 to the corresponding patent application filed in India on August 3, 2009, Application No. 1779 / MUM / 2009, the entire contents of which are incorporated herein by reference. Background technique [0003] Educators and educational institutions want to improve the effectiveness and efficiency of knowledge transfer by incorporating technology. As the use of blackboards has evolved into the use of overhead projectors, and further into the use of digital presentations, live lectures have evolved into, for example, pre-recorded video products that are digitally stored and available. Digitally available pre-recorded video lectures provide greater access to knowledge, and in some cases entire courses can be taught via pre-recorded video lectures. [0004] When a student is interested in signing up for a particular course taught via a pre-recorded video lecture, it may be benefi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/60G06T7/40G11B27/028
CPCG11B27/105G06K9/00751H04N9/80G11B27/28G06K9/6267G06V20/47G06F18/24G06T7/60G06T7/40H04N21/8549
Inventor 萨伯哈希斯·肖德胡瑞兰吉特·拉姆
Owner INDIAN INSTITUTE OF TECHNOLOGY BOMBAY
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