Search Results for author: Duolikun Danier

Found 16 papers, 6 papers with code

Full-reference Video Quality Assessment for User Generated Content Transcoding

no code implementations19 Dec 2023 Zihao Qi, Chen Feng, Duolikun Danier, Fan Zhang, Xiaozhong Xu, Shan Liu, David Bull

In this work, we observe that existing full-/no-reference quality metrics fail to accurately predict the perceptual quality difference between transcoded UGC content and the corresponding unpristine references.

Video Quality Assessment Visual Question Answering (VQA)

RankDVQA-mini: Knowledge Distillation-Driven Deep Video Quality Assessment

no code implementations14 Dec 2023 Chen Feng, Duolikun Danier, Haoran Wang, Fan Zhang, Benoit Vallade, Alex Mackin, David Bull

Deep learning-based video quality assessment (deep VQA) has demonstrated significant potential in surpassing conventional metrics, with promising improvements in terms of correlation with human perception.

Knowledge Distillation Model Compression +2

BVI-Artefact: An Artefact Detection Benchmark Dataset for Streamed Videos

no code implementations14 Dec 2023 Chen Feng, Duolikun Danier, Fan Zhang, Alex Mackin, Andy Collins, David Bull

Professionally generated content (PGC) streamed online can contain visual artefacts that degrade the quality of user experience.

Score Normalization for a Faster Diffusion Exponential Integrator Sampler

1 code implementation31 Oct 2023 Guoxuan Xia, Duolikun Danier, Ayan Das, Stathi Fotiadis, Farhang Nabiei, Ushnish Sengupta, Alberto Bernacchia

As a simple fix, we propose to instead reparameterise the score (at inference) by dividing it by the average absolute value of previous score estimates at that time step collected from offline high NFE generations.

LDMVFI: Video Frame Interpolation with Latent Diffusion Models

2 code implementations16 Mar 2023 Duolikun Danier, Fan Zhang, David Bull

Existing works on video frame interpolation (VFI) mostly employ deep neural networks that are trained by minimizing the L1, L2, or deep feature space distance (e. g. VGG loss) between their outputs and ground-truth frames.

Video Frame Interpolation

ST-MFNet Mini: Knowledge Distillation-Driven Frame Interpolation

1 code implementation16 Feb 2023 Crispian Morris, Duolikun Danier, Fan Zhang, Nantheera Anantrasirichai, David R. Bull

Currently, one of the major challenges in deep learning-based video frame interpolation (VFI) is the large model sizes and high computational complexity associated with many high performance VFI approaches.

Knowledge Distillation Network Pruning +1

BVI-VFI: A Video Quality Database for Video Frame Interpolation

2 code implementations3 Oct 2022 Duolikun Danier, Fan Zhang, David Bull

In order to narrow this research gap, we have developed a new video quality database named BVI-VFI, which contains 540 distorted sequences generated by applying five commonly used VFI algorithms to 36 diverse source videos with various spatial resolutions and frame rates.

Video Frame Interpolation

Enhancing HDR Video Compression through CNN-based Effective Bit Depth Adaptation

1 code implementation18 Jul 2022 Chen Feng, Zihao Qi, Duolikun Danier, Fan Zhang, Xiaozhong Xu, Shan Liu, David Bull

In this work, we modify the MFRNet network architecture to enable multiple frame processing, and the new network, multi-frame MFRNet, has been integrated into the EBDA framework using two Versatile Video Coding (VVC) host codecs: VTM 16. 2 and the Fraunhofer Versatile Video Encoder (VVenC 1. 4. 0).

Video Compression

Enhancing VVC with Deep Learning based Multi-Frame Post-Processing

no code implementations19 May 2022 Duolikun Danier, Chen Feng, Fan Zhang, David Bull

This paper describes a CNN-based multi-frame post-processing approach based on a perceptually-inspired Generative Adversarial Network architecture, CVEGAN.

Generative Adversarial Network Image Compression

RankDVQA: Deep VQA based on Ranking-inspired Hybrid Training

no code implementations17 Feb 2022 Chen Feng, Duolikun Danier, Fan Zhang, David Bull

In recent years, deep learning techniques have shown significant potential for improving video quality assessment (VQA), achieving higher correlation with subjective opinions compared to conventional approaches.

Video Quality Assessment Visual Question Answering (VQA)

Enhancing Deformable Convolution based Video Frame Interpolation with Coarse-to-fine 3D CNN

no code implementations15 Feb 2022 Duolikun Danier, Fan Zhang, David Bull

This paper presents a new deformable convolution-based video frame interpolation (VFI) method, using a coarse to fine 3D CNN to enhance the multi-flow prediction.

Video Frame Interpolation

A Subjective Quality Study for Video Frame Interpolation

no code implementations15 Feb 2022 Duolikun Danier, Fan Zhang, David Bull

Video frame interpolation (VFI) is one of the fundamental research areas in video processing and there has been extensive research on novel and enhanced interpolation algorithms.

SSIM Video Frame Interpolation

ST-MFNet: A Spatio-Temporal Multi-Flow Network for Frame Interpolation

3 code implementations CVPR 2022 Duolikun Danier, Fan Zhang, David Bull

Video frame interpolation (VFI) is currently a very active research topic, with applications spanning computer vision, post production and video encoding.

Texture Synthesis Video Frame Interpolation

Texture-aware Video Frame Interpolation

no code implementations26 Feb 2021 Duolikun Danier, David Bull

Our study shows that video texture has significant impact on the performance of frame interpolation models and it is beneficial to have separate models specifically adapted to these texture classes, instead of training a single model that tries to learn generic motion.

Texture Classification Video Compression +1

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