Papers by Dr. Saima Shaheen
2015 International Conference on Computer, Communications, and Control Technology (I4CT), 2015
Error prone wireless channel induces error bursts in transmitted data frames and renders the fram... more Error prone wireless channel induces error bursts in transmitted data frames and renders the frames unable to be decoded. Prevalent error control techniques work to combat the error effect through pre- or post- transmission control measures like FEC, ARQ, HARQ etc. All of these techniques induce some sort of processing and retransmission delay in net transmission duration. On other hand, applications transmitting multimedia contents and especially video contents are highly delay sensitive and exhibit hard real time requirements. However, a little degradation in quality of reconstructed video frames can be compromised for better throughput and minimized time delays. The idea of trade off between video quality and throughput has been proposed in this paper; implemented through a +modification to IEEE 802.11 frame format such that certain fields are marked to designate a frame as a video frame. Such designated frames are proposed to be treated differently from normal data frames in order to enhance video throughput and reduce transmission time delay. Results achieved are quite promising; although video frames with high motion contents possess degraded signal quality but perceptually the results seem satisfactory.
International Journal of Distributed Sensor Networks, 2015
Journal of Turkish Science Education, Dec 28, 2012
2010 6th International Conference on Emerging Technologies (ICET), 2010
In a multi-camera setup, inter-sensor statistical redundancy should be eliminated most significan... more In a multi-camera setup, inter-sensor statistical redundancy should be eliminated most significantly to achieve higher compression efficiency. This consequently saves the required bandwidth for the resultant piece of information coming out of a camera sensor network. In this research work, Moving Picture Expert Group (MPEG) a video compression standard has been extended to eliminate inter-sensor statistical redundancy for a multi-camera setup. For the formulation of results from all aspects, two strategies have been designed for inter-sensor communication. Moreover system is designed to work under two working modes (named as Scenario-A and Scenario-B). Results formulated in graphical formats show the system performance for both communication strategies under both working modes. Overall system performnace higher compression gains are obtained at lower bitrates.
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Papers by Dr. Saima Shaheen