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Xiaohongshu Tech REDtech
Xiaohongshu Tech REDtech
Nov 11, 2022 · Artificial Intelligence

Media Experience Quality Assessment: Visual Perception and Objective Quality Metrics

Professor Zhai’s REDtech talk explained how the human visual system underlies full‑, reduced‑ and no‑reference media quality metrics, introduced a free‑energy‑based perception model and pseudo‑reference technique for accurate no‑reference UGC video assessment, and discussed audio‑visual integration, opinion‑score distributions, and EEG‑based perceptual loss challenges.

UGCaudio-visualmachine learning
0 likes · 15 min read
Media Experience Quality Assessment: Visual Perception and Objective Quality Metrics
Bilibili Tech
Bilibili Tech
Sep 27, 2022 · Artificial Intelligence

Comprehensive Video Quality Evaluation Practices at Bilibili: From Subjective and Objective Metrics to HDR Assessment

Bilibili’s comprehensive video‑quality framework merges ITU‑R BT.500 subjective MOS testing with objective metrics such as PSNR, SSIM, VMAF and NIQE—including HDR10 and HLG assessment—through a full capture‑to‑encoding workflow, addressing alignment and content‑specific challenges and delivering measurable QoE and speed gains across its platforms.

HDRPSNRQoE
0 likes · 24 min read
Comprehensive Video Quality Evaluation Practices at Bilibili: From Subjective and Objective Metrics to HDR Assessment
Architecture Digest
Architecture Digest
Nov 17, 2016 · Fundamentals

Video Live Streaming Quality Issues, Evaluation Methods, and System Design

This article examines common video live‑streaming quality problems, explains their causes, describes both subjective and objective evaluation methods—including FR, NR, and RR metrics—and outlines a practical system for building and conducting comprehensive video quality assessments.

Live StreamingVideo Encodingobjective metrics
0 likes · 16 min read
Video Live Streaming Quality Issues, Evaluation Methods, and System Design