Search Results for author: Hai Wei

Found 9 papers, 2 papers with code

Encoder-Quantization-Motion-based Video Quality Metrics

no code implementations9 Apr 2024 Yixu Chen, Zaixi Shang, Hai Wei, Yongjun Wu, Sriram Sethuraman

In this work we merge several datasets into one to support the creation of a metric tailored for video compression and scaling.

Quantization Video Compression

HDR or SDR? A Subjective and Objective Study of Scaled and Compressed Videos

no code implementations25 Apr 2023 Joshua P. Ebenezer, Zaixi Shang, Yixu Chen, Yongjun Wu, Hai Wei, Sriram Sethuraman, Alan C. Bovik

We conducted a large-scale study of human perceptual quality judgments of High Dynamic Range (HDR) and Standard Dynamic Range (SDR) videos subjected to scaling and compression levels and viewed on three different display devices.

HDR-ChipQA: No-Reference Quality Assessment on High Dynamic Range Videos

no code implementations25 Apr 2023 Joshua P. Ebenezer, Zaixi Shang, Yongjun Wu, Hai Wei, Sriram Sethuraman, Alan C. Bovik

We present a no-reference video quality model and algorithm that delivers standout performance for High Dynamic Range (HDR) videos, which we call HDR-ChipQA.

Video Quality Assessment Visual Question Answering (VQA) +1

Making Video Quality Assessment Models Robust to Bit Depth

no code implementations25 Apr 2023 Joshua P. Ebenezer, Zaixi Shang, Yongjun Wu, Hai Wei, Sriram Sethuraman, Alan C. Bovik

We introduce a novel feature set, which we call HDRMAX features, that when included into Video Quality Assessment (VQA) algorithms designed for Standard Dynamic Range (SDR) videos, sensitizes them to distortions of High Dynamic Range (HDR) videos that are inadequately accounted for by these algorithms.

Video Quality Assessment Visual Question Answering (VQA)

Subjective Assessment of High Dynamic Range Videos Under Different Ambient Conditions

no code implementations20 Sep 2022 Zaixi Shang, Joshua P. Ebenezer, Alan C. Bovik, Yongjun Wu, Hai Wei, Sriram Sethuraman

High Dynamic Range (HDR) videos can represent a much greater range of brightness and color than Standard Dynamic Range (SDR) videos and are rapidly becoming an industry standard.

Vocal Bursts Intensity Prediction

Detection of Audio-Video Synchronization Errors Via Event Detection

no code implementations20 Apr 2021 Joshua P. Ebenezer, Yongjun Wu, Hai Wei, Sriram Sethuraman, Zongyi Liu

A deep network is trained to detect the visual signature of the tennis ball being hit by the racquet in the video stream.

Event Detection Video Synchronization

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