A novel square root rate control algorithm for H.264/AVC encoding
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
A mathematical analysis of the DCT coefficient distributions for images
IEEE Transactions on Image Processing
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
Rate Control for H.264 Video With Enhanced Rate and Distortion Models
IEEE Transactions on Circuits and Systems for Video Technology
An Accurate Low-Complexity Rate Control Algorithm Based on -Domain
IEEE Transactions on Circuits and Systems for Video Technology
A -Domain Characteristic-Based Bit-Rate Model for Video Transmission
IEEE Transactions on Circuits and Systems for Video Technology
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Rate control aims to adapt coding bit rate to the fluctuating network bandwidth. Since the bit rate at the encoder is determined by the final residual produced after quantizing DCT coefficients, we managed to set up exact relations among coding bit rate, the sum of absolute quantized difference (SAQD) and quantization step, proposed a novel SAQD-domain source model with an analytic justification, and unified it with an easy rate control algorithm for H.264 video coding. The proposed model shows a quite pleasing goodness-offit. Experimental results demonstrate that, compared with rate control mechanism suggested in H.264 proposal, the proposed model unified rate control algorithm yields the desired rate with much smaller deviations (less than 0.22% of the target rate), and provides much better reconstructed visual quality by giving a maximum coding gain up to 0.84dB and an average 0.59dB with smaller PSNR variation.