Scene context dependent rate control
MULTIMEDIA '01 Proceedings of the ninth ACM international conference on Multimedia
WAA '01 Proceedings of the Second International Conference on Wavelet Analysis and Its Applications
Improving Scene Cut Quality for Real-Time Video Decoding
DCC '00 Proceedings of the Conference on Data Compression
Video transport over wireless channels: a cycle-based approach for rate control
Proceedings of the 12th annual ACM international conference on Multimedia
Optimized H.264/AVC-based bit stream switching for mobile video streaming
EURASIP Journal on Applied Signal Processing
Robust system and cross-layer design for H.264/AVC-based wireless video applications
EURASIP Journal on Applied Signal Processing
EURASIP Journal on Applied Signal Processing
Modified steepest-descent for bit allocation in strongly dependent video coding
IEEE Transactions on Circuits and Systems for Video Technology
Laplace distribution based Lagrangian rate distortion optimization for hybrid video coding
IEEE Transactions on Circuits and Systems for Video Technology
Power and distortion optimization for pervasive video coding
IEEE Transactions on Circuits and Systems for Video Technology
A rate control scheme using Kalman filtering for H.263
Journal of Visual Communication and Image Representation
H.264/AVC standard: A proposal for selective intra- and optimized inter-prediction
Journal of Network and Computer Applications
Stochastic rate-control for real-time video transmission over heterogeneous network
IWDC'05 Proceedings of the 7th international conference on Distributed Computing
Adaptive rate-distortion optimization for h.264
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
Joint source-channel coding as an element of a QoS framework for '4G' wireless multimedia
Computer Communications
Cross-layer optimization of OFDM transmission systems for MPEG-4 video streaming
Computer Communications
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This paper addresses the problem of encoder optimization in a macroblock-based multimode video compression system. An efficient solution is proposed in which, for a given image region, the optimum combination of macroblock modes and the associated mode parameters are jointly selected so as to minimize the overall distortion for a given bit-rate budget. Conditions for optimizing the encoder operation are derived within a rate-constrained product code framework using a Lagrangian formulation. The instantaneous rate of the encoder is controlled by a single Lagrange multiplier that makes the method amenable to mobile wireless networks with time-varying capacity. When rate and distortion dependencies are introduced between adjacent blocks (as is the case when the motion vectors are differentially encoded and/or overlapped block motion compensation is employed), the ensuing encoder complexity is surmounted using dynamic programming. Due to the generic nature of the algorithm, it can be successfully applied to the problem of encoder control in numerous video coding standards, including H.261, MPEG-1, and MPEG-2. Moreover, the strategy is especially relevant for very low bit rate coding over wireless communication channels where the low dimensionality of the images associated with these bit rates makes real-time implementation very feasible. Accordingly, in this paper, the method is successfully applied to the emerging H.263 video coding standard with excellent results at rates as low as 8.0 Kb per second. Direct comparisons with the H.263 test model, TMN5, demonstrate that gains in peak signal-to-noise ratios (PSNR) are achievable over a wide range of rates