ABSTRACT
The use of multimedia data has become quite widespread on the Internet in recent times. It is estimated that multimedia data accounts for about 60-70 percent of total traffic on Internet and mobile networks. The applications include infotainment, remote surveillance, teleconferences, social networks, and education, to name a few. With the availability of commodity data capture and networking devices, the opportunity of authoring and sharing multimedia data has been extended to the masses, resulting in a huge explosion of multimedia on the web. It is estimated that 7 petabytes1 of photos are added to Facebook alone every month and that 2.5 million hours of news video was added to Youtube during 2012 [157]. Much of such data is distributed over myriads of network nodes and on cloud-computing platforms.
