IEEE TRANSACTIONS ON CIRCUITS AND （在电路和IEEE事务）.pdf

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, VOL. 22, NO. 12, DECEMBER 2012 1669 Comparison of the Coding Efficiency of Video Coding Standards—Including High Efficiency Video Coding (HEVC) Jens-Rainer Ohm, Member, IEEE, Gary J. Sullivan, Fellow, IEEE, Heiko Schwarz, Thiow Keng Tan, Senior Member, IEEE, and Thomas Wiegand, Fellow, IEEE Abstract —The compression capability of several generations Video Coding (HEVC) standard [1]–[4], relative to the coding of video coding standards is compared by means of peak efficiency characteristics of its major predecessors including signal-to-noise ratio (PSNR) and subjective testing results. A H.262/MPEG-2 Video [5]–[7], H.263 [8], MPEG-4 Visual unified approach is applied to the analysis of designs, including H.262/MPEG-2 Video, H.263, MPEG-4 Visual, H.264/MPEG-4 [9], and H.264/MPEG-4 Advanced Video Coding (AVC) Advanced Video Coding (AVC), and High Efficiency Video Cod- [10]–[12]. ing (HEVC). The results of subjective tests for WVGA and HD When designing a video coding standard for broad use, the sequences indicate that HEVC encoders can achieve equivalent standard is designed in order to give the developers of encoders subjective reproduction quality as encoders that conform to and decoders as much freedom as possible to customize their H.264/MPEG-4 AVC when using approximately 50% less bit rate on average. The HEVC design is shown to be especially implementations. This freedom is essential to enable a standard effective for low bit rates, high-resolution video co