查看文章

Nowadays, video streaming application is widely used in wired and wireless environment. Extending this application into Wireless sensor network (WSN) applications featuring low data rate transmission, low energy consumption, ease of deployment and low cost has attracted lots of attention in the research community. However, video transmission over such network is more challenging because of the large amount of bandwidth required. To cater this problem, video compression is of utmost importance to decrease the amount of bandwidth required over WSN. MPEG-4 video codec is one of the compression scheme that was identified to be suitable for WSN environment. In this paper, a simulation study for MPEG-4 video encoding scheme based on an experimental model was carried out to determine conformance with IEEE 802.15. 4 requirements. The results obtained from this paper would be used as a benchmark for the configuration of the video encoding scheme for WSN applications. There are three parameters that we are concerned with in this experiment, which are quantization scale, group of picture (GOP) and frame rate (fps). The results from this simulation study shows that an optimal selection of the parameters value that enhances the video transmission over WSN.