A new rate control scheme using quadratic rate distortion model
IEEE Transactions on Circuits and Systems for Video Technology
Rate control in DCT video coding for low-delay communications
IEEE Transactions on Circuits and Systems for Video Technology
Low-delay rate control for DCT video coding via ρ-domain source modeling
IEEE Transactions on Circuits and Systems for Video Technology
Optimum bit allocation and accurate rate control for video coding via ρ-domain source modeling
IEEE Transactions on Circuits and Systems for Video Technology
A linear source model and a unified rate control algorithm for DCT video coding
IEEE Transactions on Circuits and Systems for Video Technology
Fast mode decision algorithm for intraprediction in H.264/AVC video coding
IEEE Transactions on Circuits and Systems for Video Technology
Efficient rate-distortion estimation for H.264/AVC coders
IEEE Transactions on Circuits and Systems for Video Technology
Fast Bit Rate Estimation for Mode Decision of H.264/AVC
IEEE Transactions on Circuits and Systems for Video Technology
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CAVLC is the entropy coding method adopted in H.264/AVC baseline profile. RDO is the mode decision method commended by JVT, which can improve the performance of the encoder markedly. However, during the process of RDO, entropy coding should be performed for every candidate coding mode, which increases the computation complexity of video encoding largely. To avoid the expensive computation of Lagrange costs, in this paper, we propose a transform-domain bit-rate estimation method for CAVLC based on the analyses of its adaptive characteristic and apply it in a fast mode decision algorithm, in which bit-rate estimation is adopted instead of actual entropy coding in RDO mode decision, thus reducing the computing time for mode decision. Simulation results show that the fast algorithm based on proposed bitrate estimation method for CAVLC saves much encoding time while the losses of compression performance are negligible.