论文标题
超越Bjøntegaard：视频压缩性能比较的限制
Beyond Bjøntegaard: Limits of Video Compression Performance Comparisons
论文作者
论文摘要
20年来，评估视频编解码器性能的黄金标准是计算评分曲线之间的平均差异，也称为“BjøntegaardDelta”。借助此工具，可以比较编解码器的压缩性能。在过去的几年中，我们可以观察到，根据峰值信噪比，微积分还用于其他指标和扭曲，例如其他质量指标，例如视频多方法评估融合或依赖硬件的指标，例如解码能量。但是，尚不清楚Bjøntegaard三角洲是否是评估这些指标的有效方法。为此，本文回顾了几种插值方法，并使用不同的性能学评估了它们的准确性。结果，我们建议使用基于Akima插值的新方法，该方法为各种各样的性能指标返回最准确的结果。该新方法的近似准确性确定低于1.5％的结合。
For 20 years, the gold standard to evaluate the performance of video codecs is to calculate average differences between ratedistortion curves, also called the "Bjøntegaard Delta". With the help of this tool, the compression performance of codecs can be compared. In the past years, we could observe that the calculus was also deployed for other metrics than bitrate and distortion in terms of peak signal-to-noise ratio, for example other quality metrics such as video multi-method assessment fusion or hardware-dependent metrics such as the decoding energy. However, it is unclear whether the Bjøntegaard Delta is a valid way to evaluate these metrics. To this end, this paper reviews several interpolation methods and evaluates their accuracy using different performancemetrics. As a result, we propose to use a novel approach based on Akima interpolation, which returns the most accurate results for a large variety of performance metrics. The approximation accuracy of this new method is determined to be below a bound of 1.5%.
