Banding vs. Quality: Perceptual Impact and Objective Assessment

Autor:	Lukas Krasula, Zhi Li, Christos G. Bampis, Mariana Afonso, Nil Fons Miret, Joel Sole
Rok vydání:	2022
Předmět:	FOS: Computer and information sciences Image and Video Processing (eess.IV) FOS: Electrical engineering electronic engineering information engineering Electrical Engineering and Systems Science - Image and Video Processing Computer Science - Multimedia Multimedia (cs.MM)
DOI:	10.48550/arxiv.2202.11038
Popis:	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. Comment: Submitted to IEEE International Conference on Image Processing (ICIP) 2022
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5972e4440a1a85e6929fb1b68e090dbd Zobrazit plný text záznamu