22 citations · 37 across the 23 of their papers we have counts for
25 papers
Attention-Scoped Guidance: Training-Free Spatial Control for Image Editing
Zeyan Li, Wei Zhou, Hadi Amirpour +3
Instruction-guided image editing should change what the instruction names and leave the rest of the image untouched. In dual classifier-free guidance (CFG), an editor combines two…
Perceptual Quality Optimization of Image Super-Resolution
Wei Zhou, Yixiao Li, Hadi Amirpour +4
Single-image super-resolution (SR) has achieved remarkable progress with deep learning, yet most approaches rely on distortion-oriented losses or heuristic perceptual priors, which…
Is there a relationship between Mean Opinion Score (MOS) and Just Noticeable Difference (JND)?
Jingwen Zhu, Hadi Amirpour, Wei Zhou +1
Evaluating perceived video quality is essential for ensuring high Quality of Experience (QoE) in modern streaming applications. While existing subjective datasets and Video Quality…
Cross-Modal Scene Semantic Alignment for Image Complexity Assessment
Yuqing Luo, Yixiao Li, Jiang Liu +7
Image complexity assessment (ICA) is a challenging task in perceptual evaluation due to the subjective nature of human perception and the inherent semantic diversity in real-world…
VQualA 2025 Challenge on Image Super-Resolution Generated Content Quality Assessment: Methods and Results
Yixiao Li, Xin Li, Chris Wei Zhou +28
This paper presents the ISRGC-Q Challenge, built upon the Image Super-Resolution Generated Content Quality Assessment (ISRGen-QA) dataset, and organized as part of the Visual Quali…
A Lightweight Ensemble-Based Face Image Quality Assessment Method with Correlation-Aware Loss
MohammadAli Hamidi, Hadi Amirpour, Luigi Atzori +1
Face image quality assessment (FIQA) plays a critical role in face recognition and verification systems, especially in uncontrolled, real-world environments. Although several metho…
VQualA 2025 Challenge on Face Image Quality Assessment: Methods and Results
Sizhuo Ma, Wei-Ting Chen, Qiang Gao +56
Face images play a crucial role in numerous applications; however, real-world conditions frequently introduce degradations such as noise, blur, and compression artifacts, affecting…
eMotions: A Large-Scale Dataset and Audio-Visual Fusion Network for Emotion Analysis in Short-form Videos
Xuecheng Wu, Dingkang Yang, Danlei Huang +9
Short-form videos (SVs) have become a vital part of our online routine for acquiring and sharing information. Their multimodal complexity poses new challenges for video analysis, h…
SVD: Spatial Video Dataset
M. H. Izadimehr, Milad Ghanbari, Guodong Chen +5
Stereoscopic video has long been the subject of research due to its capacity to deliver immersive three-dimensional content across a wide range of applications, from virtual and au…
Improving the Efficiency of VVC using Partitioning of Reference Frames
Kamran Qureshi, Hadi Amirpour, Christian Timmerer
In response to the growing demand for high-quality videos, Versatile Video Coding (VVC) was released in 2020, building on the hybrid coding architecture of its predecessor, HEVC, a…
Multi-resolution Encoding for HTTP Adaptive Streaming using VVenC
Kamran Qureshi, Hadi Amirpour, Christian Timmerer
HTTP Adaptive Streaming (HAS) is a widely adopted method for delivering video content over the Internet, requiring each video to be encoded at multiple bitrates and resolution pair…
Perceptual Visual Quality Assessment: Principles, Methods, and Future Directions
Wei Zhou, Hadi Amirpour, Christian Timmerer +3
As multimedia services such as video streaming, video conferencing, virtual reality (VR), and online gaming continue to expand, ensuring high perceptual visual quality becomes a pr…
CLIP-DQA: Blindly Evaluating Dehazed Images from Global and Local Perspectives Using CLIP
Yirui Zeng, Jun Fu, Hadi Amirpour +5
Blind dehazed image quality assessment (BDQA), which aims to accurately predict the visual quality of dehazed images without any reference information, is essential for the evaluat…
EPS: Efficient Patch Sampling for Video Overfitting in Deep Super-Resolution Model Training
Yiying Wei, Hadi Amirpour, Jong Hwan Ko +1
Leveraging the overfitting property of deep neural networks (DNNs) is trending in video delivery systems to enhance video quality within bandwidth limits. Existing approaches trans…
360-Degree Video Super Resolution and Quality Enhancement Challenge: Methods and Results
Ahmed Telili, Wassim Hamidouche, Ibrahim Farhat +12
Omnidirectional (360-degree) video is rapidly gaining popularity due to advancements in immersive technologies like virtual reality (VR) and extended reality (XR). However, real-ti…
ODVista: An Omnidirectional Video Dataset for super-resolution and Quality Enhancement Tasks
Ahmed Telili, Ibrahim Farhat, Wassim Hamidouche +1
Omnidirectional or 360-degree video is being increasingly deployed, largely due to the latest advancements in immersive virtual reality (VR) and extended reality (XR) technology. H…
A Survey on Energy Consumption and Environmental Impact of Video Streaming
Samira Afzal, Narges Mehran, Zoha Azimi Ourimi +4
Climate change challenges require a notable decrease in worldwide greenhouse gas (GHG) emissions across technology sectors. Digital technologies, especially video streaming, accoun…
Preparing VVC for Streaming: A Fast Multi-Rate Encoding Approach
Yiqun Liu, Hadi Amirpour, Mohsen Abdoli +2
The integration of advanced video codecs into the streaming pipeline is growing in response to the increasing demand for high quality video content. However, the significant comput…
Convex Hull Prediction Methods for Bitrate Ladder Construction: Design, Evaluation, and Comparison
Ahmed Telili, Wassim Hamidouche, Hadi Amirpour +3
HTTP adaptive streaming (HAS) has emerged as a prevalent approach for over-the-top (OTT) video streaming services due to its ability to deliver a seamless user experience. A fundam…
Just Noticeable Difference-aware Per-Scene Bitrate-laddering for Adaptive Video Streaming
Vignesh V Menon, Jingwen Zhu, Prajit T Rajendran +3
In video streaming applications, a fixed set of bitrate-resolution pairs (known as a bitrate ladder) is typically used during the entire streaming session. However, an optimized bi…
Fast multi-encoding to reduce the cost of video streaming
Hadi Amirpour, Vignesh V Menon, Ekrem Çetinkaya +4
The growth in video Internet traffic and advancements in video attributes such as framerate, resolution, and bit-depth boost the demand to devise a large-scale, highly efficient vi…
Content-adaptive Encoder Preset Prediction for Adaptive Live Streaming
Vignesh V Menon, Hadi Amirpour, Prajit T Rajendran +2
In live streaming applications, a fixed set of bitrate-resolution pairs (known as bitrate ladder) is generally used to avoid additional pre-processing run-time to analyze the compl…
MU-MIMO Grouping For Real-time Applications
Hannaneh Barahouei Pasandi, Tamer Nadeem, Hadi Amirpour
Over the last decade, the bandwidth expansion and MU-MIMO spectral efficiency have promised to increase data throughput by allowing concurrent communication between one Access Poin…
CTU Depth Decision Algorithms for HEVC: A Survey
Ekrem Cetinkaya, Hadi Amirpour, Mohammad Ghanbari +1
High-Efficiency Video Coding (HEVC) surpasses its predecessors in encoding efficiency by introducing new coding tools at the cost of an increased encoding time-complexity. The Codi…