Efficient Wavelet-Based Video Coding
IPDPS '02 Proceedings of the 16th International Parallel and Distributed Processing Symposium
Further improvement on dynamic programming for optimal bit allocation
Journal of Computer Science and Technology
Multi-object video rate control
Network control and engineering for Qos, security and mobility II
Recent advances in rate control for video coding
Image Communication
Rate-distortion optimization for stereoscopic video streaming with unequal error protection
EURASIP Journal on Applied Signal Processing - 3DTV: Capture, Transmission, and Display of 3D Video
Joint rate control algorithm for low-delay MPEG-4 object- based video encoding
IEEE Transactions on Circuits and Systems for Video Technology
Review article: Object-based video coding with dynamic quality control
Image and Vision Computing
Convex Optimization-Based Bit Allocation for Video Coding
Journal of Signal Processing Systems
Operational distortion-quantization curve-based bit allocation for smooth video quality
Journal of Visual Communication and Image Representation
Rate-distortion optimization for automatic sprite video coding using H.264/AVC
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
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In previous years, an interest has developed in the coded representations of video signals allowing independent manipulation of semantically independent elements (objects). Along these lines, the ISO standard MPEG-4 enhances the traditional concept of the video sequence to convert it into a synchronized set of visual objects organized in a flexible way. The real-time generation of a bitstream according to this new paradigm, and suitable for its transmission through either fixed- or variable-rate channels, results in a challenging new bit allocation and rate control problem, which has to satisfy complex application requirements. This paper formalizes this new issue by focusing on the design of rate control systems for real-time applications. The proposed approach relies on the modelization of the source and the optimization of a cost criterion based on signal quality parameters. Different cost criteria are provided, corresponding to a set of relevant definitions of the object priority concept. Algorithms are introduced to minimize the average distortion of the objects, to guarantee desired qualities to the most relevant ones, and to keep constant ratios among the object qualities. The techniques have been applied to a coder implementing the MPEG-4 video verification model, showing good properties in terms of achievement of the control objectives