论文标题
在黑暗大挑战中编码:概述
Encoding in the Dark Grand Challenge: An Overview
论文作者
论文摘要
我们从视频提供商中消费的视频内容的很大一部分包括由低光学美学的流派组成。低光序列具有特殊的特征,例如时空变化的采集噪声和光闪烁,这使编码过程具有挑战性。为了应对时空不一致的噪声,使用更高的比特率来实现高度客观的质量。此外,尚未针对此类内容设计,培训或测试质量评估指标和方法。这激发了我们在该领域触发研究,并就编码弱光视频序列提出了巨大的挑战。在本文中,我们概述了拟议的挑战和测试最先进的方法,该方法将成为参与者可交付评估阶段的基准方法的一部分。从此探索中,我们的结果表明,与简单地在编码之前简单地降低视频源相比,VVC已经达到了高性能。此外,通过采用后处理图像增强方法,可以进一步提高视频流的质量。
A big part of the video content we consume from video providers consists of genres featuring low-light aesthetics. Low light sequences have special characteristics, such as spatio-temporal varying acquisition noise and light flickering, that make the encoding process challenging. To deal with the spatio-temporal incoherent noise, higher bitrates are used to achieve high objective quality. Additionally, the quality assessment metrics and methods have not been designed, trained or tested for this type of content. This has inspired us to trigger research in that area and propose a Grand Challenge on encoding low-light video sequences. In this paper, we present an overview of the proposed challenge, and test state-of-the-art methods that will be part of the benchmark methods at the stage of the participants' deliverable assessment. From this exploration, our results show that VVC already achieves a high performance compared to simply denoising the video source prior to encoding. Moreover, the quality of the video streams can be further improved by employing a post-processing image enhancement method.