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Performance analysis, parameter selection and extensions to H.264/AVC FRExt for high resolution video coding

机译:性能分析,参数选择以及针对高分辨率视频编码的H.264 / AVC FRExt扩展

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摘要

H.264/AVC FRExt (Fidelity Range Extensions) and Motion JPEG 2000 are the current respective inter-frame and intra-frame coding standards for high resolution (HR) (e.g., 4096 × 2160) visual signals. It is commonly believed that an inter-frame method could achieve higher coding efficiency compared with an intra-frame one, due to the exploitation of video temporal redundancy. However, Motion JPEG 2000 has been selected as the digital cinema compression standard, and some existing work has demonstrated that JPEG 2000 is more suitable at HR situations. In this paper, we compare the rate-distortion (R-D) performance of these two different schemes and give more insight from both theoretical and experimental point of view. We derive an entropy-based R-D model to analyze the test results and the impact of residual entropy and quantization for inter-frame coding. Several extensions are introduced into H.264/AVC FRExt for HR video content for better performance. Experimental results show that these extensions lead to significantly higher coding efficiency and make our extended version more suitable for HR video coding.
机译:H.264 / AVC FRExt(保真度范围扩展)和Motion JPEG 2000是当前用于高分辨率(HR)(例如4096×2160)视觉信号的帧间和帧内编码标准。通常认为,由于利用视频时间冗余,因此帧间方法与帧内方法相比可以实现更高的编码效率。但是,Motion JPEG 2000已被选为数字电影压缩标准,并且一些现有工作表明JPEG 2000更适合于HR情况。在本文中,我们比较了这两种不同方案的速率失真(R-D)性能,并从理论和实验的角度给出了更多的见解。我们推导了一个基于熵的R-D模型,以分析测试结果以及残差熵和量化对帧间编码的影响。 H.264 / AVC FRExt为HR视频内容引入了多个扩展,以实现更好的性能。实验结果表明,这些扩展可显着提高编码效率,并使我们的扩展版本更适用于HR视频编码。

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