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Dynamic backgrounds and sudden illumination changes are two of the major problems associated with background subtraction techniques. In this paper, we present a novel approach to background subtraction that addresses both of these challenges. In particular, we present an improved codebook background modelling and subtraction technique. We utilise image segmentation on the background image and model...
This paper presents a method for adaptive rate control in a video conferencing solution over a variable bandwidth channel. The bandwidth is estimated using the round-trip delay of probe packets. Based on the estimated bandwidth, the video rate adaptation is done in two folds; one in the H.264 video encoder based on adaptive basic unit selection and the other by generation of fragments for encoding...
This paper introduces three embedded solutions based on H.264 video codec on TI DaVinci processor. These solutions are remote video consultation system for the healthcare industry, point to point video chat and place-shifting system for the consumer industry. The main value additions in these solutions are bandwidth efficiencies and at the same time a better video quality as these systems are built...
With the rapid growth of the Internet and the widespread access to the digital data, the content creators often encounter problems like illegal copy and distribution of their content. This paper addresses the problem for multimedia data. An efficient video encryption technique is proposed to protect illegal distribution of video content stored in H.264 format. This paper presents a fast video encryption...
In this age of multimedia convergence, video based applications for conferencing and streaming are seeing big market traction. The main challenge of implementing these systems is a tradeoff between several factors like bandwidth, image quality, implementation cost and speed (in terms of mega cycles per second). Moreover to implement this encoder-decoder system (CODECs) in a real time system based...
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