The anatomy of a large-scale hypertextual Web search engine
WWW7 Proceedings of the seventh international conference on World Wide Web 7
Video Coding With Superimposed Motion-Compensated Signals: Applications to H.264 and Beyond (Kluwer International Series in Engineering and Computer Science, "760)
ACM Transactions on Internet Technology (TOIT)
Overview of AVS-video coding standards
Image Communication
A two-pass rate control algorithm for H.264/AVC high definition video coding
Image Communication
Two-pass MPEG-2 variable-bit-rate encoding
IBM Journal of Research and Development
A frame-layer bit allocation for H.263+
IEEE Transactions on Circuits and Systems for Video Technology
A novel two-pass VBR coding algorithm for fixed-size storage application
IEEE Transactions on Circuits and Systems for Video Technology
Motion- and aliasing-compensated prediction for hybrid video coding
IEEE Transactions on Circuits and Systems for Video Technology
Generalized B pictures and the draft H.264/AVC video-compression standard
IEEE Transactions on Circuits and Systems for Video Technology
Rate-distortion analysis for H.264/AVC video coding and its application to rate control
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
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Inter-frame dependencies are usually ignored in video encoder coding parameter selection. This gives a non-optimal solution and degrades the compression performance. A mathematical model to estimate the importance of each pixel on the reconstructed video quality, called PixelRank, is developed in this paper. Theoretical analysis on the parameters used for PixelRank score calculation dealing with the video coding optimization problem is also given. The PixelRank algorithm tracks the importance of each pixel and distributes the PixelRank scores. With the PixelRank scores for all the pixels, MB-based quantization parameters are adjusted accordingly. Based on this technique, the rate can be allocated more accurately according to the importance of the pixels, thus achieving better overall rate-distortion performance. Compared to the non-optimized scheme in H.264/AVC, the proposed scheme can reduce 13.53% of the average bitrate and up to 25.17% of bitrate in the simulations.