10 papers
Thresholded Cross-Attention for Reliable Intensity-Chromaticity Fusion in Low-Light Image Enhancement
Yanyi Wu, Xu Zhang, Junkai Chen +6
Low-Light Image Enhancement (LLIE) requires a careful balance among noise suppression, color fidelity, and efficiency. Recent HVI-based methods alleviate color entanglement by deco…
Enhanced Quality Aware-Scalable Underwater Image Compression
Linwei Zhu, Junhao Zhu, Xu Zhang +4
Underwater imaging plays a pivotal role in marine exploration and ecological monitoring. However, it faces significant challenges of limited transmission bandwidth and severe disto…
Hierarchical Graph Attention Network for No-Reference Omnidirectional Image Quality Assessment
Hao Yang, Xu Zhang, Jiaqi Ma +3
Current Omnidirectional Image Quality Assessment (OIQA) methods struggle to evaluate locally non-uniform distortions due to inadequate modeling of spatial variations in quality and…
Deep-JGAC: End-to-End Deep Joint Geometry and Attribute Compression for Dense Colored Point Clouds
Yun Zhang, Zixi Guo, Linwei Zhu +1
Colored point cloud becomes a fundamental representation in the realm of 3D vision. Effective Point Cloud Compression (PCC) is urgently needed due to huge amount of data. In this p…
LFIC-DRASC: Deep Light Field Image Compression Using Disentangled Representation and Asymmetrical Strip Convolution
Shiyu Feng, Yun Zhang, Linwei Zhu +1
Light-Field (LF) image is emerging 4D data of light rays that is capable of realistically presenting spatial and angular information of 3D scene. However, the large data volume of…
TSC-PCAC: Voxel Transformer and Sparse Convolution Based Point Cloud Attribute Compression for 3D Broadcasting
Zixi Guo, Yun Zhang, Linwei Zhu +2
Point cloud has been the mainstream representation for advanced 3D applications, such as virtual reality and augmented reality. However, the massive data amounts of point clouds is…
Deep Learning-Based Intra Mode Derivation for Versatile Video Coding
Linwei Zhu, Yun Zhang, Na Li +2
In intra coding, Rate Distortion Optimization (RDO) is performed to achieve the optimal intra mode from a pre-defined candidate list. The optimal intra mode is also required to be…
Distortion-Aware Loop Filtering of Intra 360^o Video Coding with Equirectangular Projection
Pingping Zhang, Xu Wang, Linwei Zhu +3
In this paper, we propose a distortion-aware loop filtering model to improve the performance of intra coding for 360 videos projected via equirectangular projection (ERP) forma…
A Survey on Perceptually Optimized Video Coding
Yun Zhang, Linwei Zhu, Gangyi Jiang +2
To provide users with more realistic visual experiences, videos are developing in the trends of Ultra High Definition (UHD), High Frame Rate (HFR), High Dynamic Range (HDR), Wide C…
Towards Modality Transferable Visual Information Representation with Optimal Model Compression
Rongqun Lin, Linwei Zhu, Shiqi Wang +1
Compactly representing the visual signals is of fundamental importance in various image/video-centered applications. Although numerous approaches were developed for improving the i…