Determining the Amount of Audio-Video Synchronization Errors Perceptible to the Average End-User

2008 ◽  
Vol 54 (3) ◽  
pp. 623-627 ◽  
Author(s):  
Audrey C. Younkin ◽  
Philip J. Corriveau
Keyword(s):  
End User ◽  
Synchronization Errors ◽  
Video Synchronization ◽  
Audio Video

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.

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

Utility of a Technology Allocation Matrix for Optimizing Telehealth Services

2012 ◽  
Vol 4 (4) ◽  
pp. 1-15
Author(s):  
Ajit N. Babu ◽  
P. S. Ramkumar ◽  
James E. Stahl
Keyword(s):  
Information Exchange ◽  
Cost Effective ◽  
Appropriate Technology ◽  
Video Data ◽  
User Needs ◽  
End User ◽  
Cost Effective Approach ◽  
The Matrix ◽  
Funding Mechanisms ◽  
Audio Video

Information exchange in telehealth ultimately comprises basic activities such as measurement, storage, analysis, distribution, presentation and monitoring of relevant text/image/audio/video data. A systematic technology mapping matrix is a sensible and cost-effective approach to enable the scientifically sound deployment of appropriate telehealth technologies. This paper takes the example of congestive heart failure (CHF) telemonitoring and applies elements of the matrix to illustrate its utility. Though CHF is a global problem with grave implications for public health and society, morbidity and mortality remains high. Despite clinical similarities that may exist among patients in different parts of the world, telemonitoring may not be feasible everywhere; and even when it is, significant modifications in approach would be needed to accommodate available infrastructure, funding mechanisms and patient/clinician preferences. For the success of any telehealth program, in addition to incorporating appropriate technology there must be focus on end-user needs and incorporating viable sustainability models.

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