论文标题
乐队与质量：感知影响和客观评估
Banding vs. Quality: Perceptual Impact and Objective Assessment
论文作者
论文摘要
在平坦区域（通常称为频段）中量化的视频引入视频的类似楼梯的轮廓一直是视频处理和质量评估社区的长期问题。即使是原始像素值相对较小的变化也可能导致对感知质量的强烈影响，这一事实使得频段特别难以被客观质量指标检测到。在本文中，我们研究了与整体感知质量相对于更常见的缩放和压缩伪像进行比较的烦恼。我们进一步提出了VMAF和最近开发的带索引Cambi的简单组合，以带有带吸引的视频质量指标，显示了与整体感知质量的相关性改善的相关性。
Staircase-like contours introduced to a video by quantization in flat areas, commonly known as banding, have been a long-standing problem in both video processing and quality assessment communities. The fact that even a relatively small change of the original pixel values can result in a strong impact on perceived quality makes banding especially difficult to be detected by objective quality metrics. In this paper, we study how banding annoyance compares to more commonly studied scaling and compression artifacts with respect to the overall perceptual quality. We further propose a simple combination of VMAF and the recently developed banding index, CAMBI, into a banding-aware video quality metric showing improved correlation with overall perceived quality.
