Assessing the importance of audio/video synchronization for simultaneous translation of video sequences

2012 ◽  
Vol 18 (6) ◽  
pp. 445-457 ◽  
Author(s):  
Nicolas Staelens ◽  
Jonas De Meulenaere ◽  
Lizzy Bleumers ◽  
Glenn Van Wallendael ◽  
Jan De Cock ◽  
...  
Keyword(s):  
Video Sequences ◽  
Video Synchronization ◽  
Audio Video ◽  
Simultaneous Translation

Secure Information Delivery through High Bitrate Data Embedding within Digital Video and its Application to Audio/Video Synchronization

2012 ◽  
Vol 6 (4) ◽  
pp. 71-93
Author(s):  
Ming Yang ◽  
Chih-Cheng Hung ◽  
Edward Jung
Keyword(s):  
Video Compression ◽  
Information Hiding ◽  
Secure Communication ◽  
Digital Video ◽  
Lossy Compression ◽  
Data Encryption ◽  
Practical Applications ◽  
Secure Information ◽  
Video Synchronization ◽  
Audio Video

Secure communication has traditionally been ensured with data encryption, which has become easier to break than before due to the advancement of computing power. For this reason, information hiding techniques have emerged as an alternative to achieve secure communication. In this research, a novel information hiding methodology is proposed to deliver secure information with the transmission/broadcasting of digital video. Secure data will be embedded within the video frames through vector quantization. At the receiver end, the embedded information can be extracted without the presence of the original video contents. In this system, the major performance goals include visual transparency, high bitrate, and robustness to lossy compression. Based on the proposed methodology, the authors have developed a novel synchronization scheme, which ensures audio/video synchronization through speech-in-video techniques. Compared to existing algorithms, the main contributions of the proposed methodology are: (1) it achieves both high bitrate and robustness against lossy compression; (2) it has investigated impact of embedded information to the performance of video compression, which has not been addressed in previous research. The proposed algorithm is very useful in practical applications such as secure communication, captioning, speech-in-video, video-in-video, etc.

scholarly journals The Zircus Concept Sketch for a Learning Environment and Online Community

1997 ◽  
Vol 6 (3) ◽  
pp. 339-349 ◽  
Author(s):  
Carol Strohecker
Keyword(s):  
Learning Environment ◽  
Virtual Environment ◽  
Online Community ◽  
Architectural Design ◽  
Video Sequences ◽  
Input Devices ◽  
Future System ◽  
Media Learning ◽  
High Level ◽  
Audio Video

This paper describes premises of a video, Zircus, presenting a design for a virtual environment. The video is a basis for discussion—a sketch, rather than a specification, of a virtual playspace and interactions that can happen there. The playspace is conceived as a learning environment in which constructive activities can focus thinking on certain sets of ideas. Conversations within the multiuser environment can also be conducive to learning, as well as to developing an online community. These actions and conversations would depend on a future system combining technologies in networked graphics, speech, AI, various input devices, and high-level software for constructing animations and audio/video sequences. Taking the ideas in Zircus from sketch to implementation will require contributions from researchers in a range of disciplines, including architectural design, film media, learning theory, and computer science.

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