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This letter proposes a deep-learning (DL)-based multi-user channel state information (CSI) feedback framework for massive multiple-input multiple-output systems, where the deep joint source-channel coding (DJSCC) is utilized to improve the…

Machine Learning · Computer Science 2025-05-27 Hengwei Zhang , Minghui Wu , Li Qiao , Ling Liu , Ziqi Han , Zhen Gao

In this paper, we propose a class of high-efficiency deep joint source-channel coding methods that can closely adapt to the source distribution under the nonlinear transform, it can be collected under the name nonlinear transform…

Information Theory · Computer Science 2022-11-03 Jincheng Dai , Sixian Wang , Kailin Tan , Zhongwei Si , Xiaoqi Qin , Kai Niu , Ping Zhang

Multi-task learning (MTL) is an efficient way to improve the performance of related tasks by sharing knowledge. However, most existing MTL networks run on a single end and are not suitable for collaborative intelligence (CI) scenarios. In…

Computer Vision and Pattern Recognition · Computer Science 2021-11-03 Mengyang Wang , Zhicong Zhang , Jiahui Li , Mengyao Ma , Xiaopeng Fan

Hashing has been widely used in approximate nearest neighbor search for its storage and computational efficiency. Deep supervised hashing methods are not widely used because of the lack of labeled data, especially when the domain is…

Computer Vision and Pattern Recognition · Computer Science 2021-05-14 Xiao Luo , Zeyu Ma , Daqing Wu , Huasong Zhong , Chong Chen , Jinwen Ma , Minghua Deng

In this paper, we propose a new wireless video communication scheme to achieve high-efficiency video transmission over noisy channels. It exploits the idea of model division multiple access (MDMA) and extracts common semantic features…

Multimedia · Computer Science 2023-05-26 Zhicheng Bao , Haotai Liang , Chen Dong , Xiaodong Xu , Geng Liu

Unmanned aerial vehicle (UAV) downlink transmission facilitates critical time-sensitive visual applications but is fundamentally constrained by bandwidth scarcity and dynamic channel impairments. The rapid fluctuation of the air-to-ground…

Information Theory · Computer Science 2026-02-12 Jijia Tian , Junting Chen , Pooi-Yuen Kam

We propose a practical approach to JPEG image decoding, utilizing a local implicit neural representation with continuous cosine formulation. The JPEG algorithm significantly quantizes discrete cosine transform (DCT) spectra to achieve a…

Image and Video Processing · Electrical Eng. & Systems 2024-04-09 Woo Kyoung Han , Sunghoon Im , Jaedeok Kim , Kyong Hwan Jin

We consider multi-user semantic communications over broadcast channels. While most existing works consider that each receiver requires either the same or independent semantic information, this paper explores the scenario where the semantic…

Information Theory · Computer Science 2024-06-13 Yufei Bo , Shuo Shao , Meixia tao

The balance between high accuracy and high speed has always been a challenging task in semantic image segmentation. Compact segmentation networks are more widely used in the case of limited resources, while their performances are…

Computer Vision and Pattern Recognition · Computer Science 2021-07-20 Yingchao Feng , Xian Sun , Wenhui Diao , Jihao Li , Xin Gao

With the large-scale explosion of images and videos over the internet, efficient hashing methods have been developed to facilitate memory and time efficient retrieval of similar images. However, none of the existing works uses hashing to…

Computer Vision and Pattern Recognition · Computer Science 2019-06-06 Ayan Kumar Bhunia , Perla Sai Raj Kishore , Pranay Mukherjee , Abhirup Das , Partha Pratim Roy

Diffusion models (DM) can gradually learn to remove noise, which have been widely used in artificial intelligence generated content (AIGC) in recent years. The property of DM for eliminating noise leads us to wonder whether DM can be…

Information Theory · Computer Science 2023-09-19 Tong Wu , Zhiyong Chen , Dazhi He , Liang Qian , Yin Xu , Meixia Tao , Wenjun Zhang

Near-space airship-borne communication network is recognized to be an indispensable component of the future integrated ground-air-space network thanks to airships' advantage of long-term residency at stratospheric altitudes, but it urgently…

Signal Processing · Electrical Eng. & Systems 2024-05-31 Minghui Wu , Zhen Gao , Zhaocheng Wang , Dusit Niyato , George K. Karagiannidis , Sheng Chen

In the real world, the degradation of images taken under haze can be quite complex, where the spatial distribution of haze is varied from image to image. Recent methods adopt deep neural networks to recover clean scenes from hazy images…

Computer Vision and Pattern Recognition · Computer Science 2021-11-19 Tian Ye , Mingchao Jiang , Yunchen Zhang , Liang Chen , Erkang Chen , Pen Chen , Zhiyong Lu

Deep quantization methods have shown high efficiency on large-scale image retrieval. However, current models heavily rely on ground-truth information, hindering the application of quantization in label-hungry scenarios. A more realistic…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Jinpeng Wang , Bin Chen , Qiang Zhang , Zaiqiao Meng , Shangsong Liang , Shu-Tao Xia

Efficient medical image segmentation aims to provide accurate pixel-wise predictions for medical images with a lightweight implementation framework. However, lightweight frameworks generally fail to achieve superior performance and suffer…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Xingqun Qi , Zhuojie Wu , Min Ren , Muyi Sun , Caifeng Shan , Zhenan Sun

Enabling Visual Semantic Models to effectively handle multi-view description matching has been a longstanding challenge. Existing methods typically learn a set of embeddings to find the optimal match for each view's text and compute…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Yang Liu , Wentao Feng , Zhuoyao Liu , Shudong Huang , Jiancheng Lv

We consider a joint source channel coding (JSCC) problem in which we desire to transmit an arbitrary memoryless source over an arbitrary additive channel. We propose a mismatched coding architecture that consists of Gaussian codebooks for…

Information Theory · Computer Science 2018-09-03 Lin Zhou , Vincent Y. F. Tan , Mehul Motani

Image fusion is a significant problem in many fields including digital photography, computational imaging and remote sensing, to name but a few. Recently, deep learning has emerged as an important tool for image fusion. This paper presents…

Image and Video Processing · Electrical Eng. & Systems 2020-05-19 Shuang Xu , Zixiang Zhao , Yicheng Wang , Chunxia Zhang , Junmin Liu , Jiangshe Zhang

Driven by the urgent demand for managing remote sensing big data, large-scale remote sensing image retrieval (RSIR) attracts increasing attention in the remote sensing field. In general, existing retrieval methods can be regarded as…

Computer Vision and Pattern Recognition · Computer Science 2019-09-11 Weiwei Song , Shutao Li , Jon Atli Benediktsson

Earth observation with small satellites serves a wide range of relevant applications. However, significant advances in sensor technology (e.g., higher resolution, multiple spectrums beyond visible light) in combination with challenging…

Networking and Internet Architecture · Computer Science 2024-07-26 Olga Kondrateva , Stefan Dietzel , Björn Scheuermann