Down-Sampling Based Rate Control for Mobile Screen Video Coding

Adaptive Down-Sampling Video Coding

Down-sampling coding, which sub-samples the image and encodes the smaller sized images, is one of the solutions to raise the image quality at insufficiently high rates. In this work, we propose an Adaptive Down-Sampling (ADS) coding for H.264/AVC. The overall system distortion can be analyzed as the sum of the down-sampling distortion and the coding distortion. The down-sampling distortion is m...

Buffer−Based Constant Bit−Rate Control for Scalable Video Coding

The emerging Scalable Video Coding (SVC) is an extension of H.264/AVC standard, which shows improved coding efficiency and scalability functionalities with respect to previous scalable video coding approaches. These new functionalities make SVC suitable for meeting the increasing demand for multimedia data and the diversification of network requirements and terminal devices capabilities. To thi...

Rate Control in Video Coding

Rate control plays an important role in video coding, although it’s not a normative tool for any video coding standard. In video communications, rate control must ensure the coded bitstream can be transmitted successfully and make full use of the limited bandwidth. As a consequence, a proper rate control scheme is usually recommended by a standard during the development, e.g. TM5 for MPEG-2, TM...

4 Rate Control in Video Coding

Gamma rate theory for causal rate control in source coding and video coding

Dapeng Oliver Wu received Ph.D. in Electrical and Computer Engineering from Carnegie Mellon University, Pittsburgh, PA, in 2003. Since 2003, he has been on the faculty of Electrical and Computer Engineering Department at University of Florida, Gainesville, FL, where he is currently Associate Professor. His research interests are in the areas of networking, communications, video coding, image pr...