Geometry-based spherical JND modeling for 360$^\circ$ display

no code implementations • 7 Mar 2023 • Hongan Wei, Jiaqi Liu, Bo Chen, Liqun Lin, Weiling Chen, Tiesong Zhao

Second, we extend our 2D-JND model to SJND by jointly exploiting latitude projection and field of view during 360$^\circ$ display.

Video Compression

Saliency-Aware Spatio-Temporal Artifact Detection for Compressed Video Quality Assessment

no code implementations • 3 Jan 2023 • Liqun Lin, Yang Zheng, Weiling Chen, Chengdong Lan, Tiesong Zhao

In this paper, we investigate the influence of four spatial PEAs (i. e. blurring, blocking, bleeding, and ringing) and two temporal PEAs (i. e. flickering and floating) on video quality.

Artifact Detection Blocking +1

Deep Quality Assessment of Compressed Videos: A Subjective and Objective Study

no code implementations • 7 May 2022 • Liqun Lin, Zheng Wang, Jiachen He, Weiling Chen, Yiwen Xu, Tiesong Zhao

In this work, a semi-automatic labeling method is adopted to build a large-scale compressed video quality database, which allows us to label a large number of compressed videos with manageable human workload.

Video Quality Assessment Visual Question Answering (VQA)

PEA265: Perceptual Assessment of Video Compression Artifacts

no code implementations • 1 Mar 2019 • Liqun Lin, Shiqi Yu, Tiesong Zhao, Member, Zhou Wang, Fellow, IEEE

To monitor and improve visual QoE, it is crucial to develop subjective and objective measures that can identify and quantify various types of PEAs.

Blocking Motion Estimation +2