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In the Fourier domain, luminance information is primarily encoded in the amplitude spectrum, while spatial structures are captured in the phase components. The traditional Fourier Frequency information fitting employs pixel-wise loss…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Yan Xingyang , Huang Xiaohong , Zhang Zhao , You Tian , Xu Ziheng

Sequential recommendation has garnered significant attention for its ability to capture dynamic preferences by mining users' historical interaction data. Given that users' complex and intertwined periodic preferences are difficult to…

Information Retrieval · Computer Science 2025-11-27 Huayang Xu , Huanhuan Yuan , Guanfeng Liu , Junhua Fang , Lei Zhao , Pengpeng Zhao

Images captured underwater often suffer from suboptimal illumination settings that can hide important visual features, reducing their quality. We present a novel single-image low-light underwater image enhancer, L^2UWE, that builds on our…

Computer Vision and Pattern Recognition · Computer Science 2020-11-09 Tunai Porto Marques , Alexandra Branzan Albu

Underwater images suffer from color casts and low contrast due to wavelength- and distance-dependent attenuation and scattering. To solve these two degradation issues, we present an underwater image enhancement network via medium…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Chongyi Li , Saeed Anwar , Junhui Hou , Runmin Cong , Chunle Guo , Wenqi Ren

The embodied intelligence bridges the physical world and information space. As its typical physical embodiment, humanoid robots have shown great promise through robot learning algorithms in recent years. In this study, a hardware platform,…

Robotics · Computer Science 2025-10-17 Jiaxin Huang , Hanyu Liu , Yunsheng Ma , Jian Shen , Yilin Zheng , Jiayi Wen , Baishu Wan , Pan Li , Zhigong Song

Affine Frequency Division Multiplexing (AFDM), a new chirp-based multicarrier waveform for high mobility communications, is introduced here. AFDM is based on discrete affine Fourier transform (DAFT), a generalization of discrete Fourier…

Information Theory · Computer Science 2022-05-04 Ali Bemani , Nassar Ksairi , Marios Kountouris

Recently, large-scale text-to-image (T2I) diffusion models have emerged as a powerful tool for image-to-image translation (I2I), allowing open-domain image translation via user-provided text prompts. This paper proposes frequency-controlled…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Xiang Gao , Zhengbo Xu , Junhan Zhao , Jiaying Liu

Lightweight image super-resolution (SR) aims to reconstruct high-resolution images from low-resolution images under limited computational costs. We find that existing frequency-based SR methods cannot balance the reconstruction of overall…

Image and Video Processing · Electrical Eng. & Systems 2025-08-12 Wenjie Li , Heng Guo , Yuefeng Hou , Guangwei Gao , Zhanyu Ma

Radio imaging is rapidly gaining prominence in the design of future communication systems, with the potential to utilize reconfigurable intelligent surfaces (RISs) as imaging apertures. Although the sparsity of targets in three-dimensional…

Information Theory · Computer Science 2024-04-09 Yixuan Huang , Jie Yang , Wankai Tang , Chao-Kai Wen , Shi Jin

Building change detection remains challenging for urban development, disaster assessment, and military reconnaissance. While foundation models like Segment Anything Model (SAM) show strong segmentation capabilities, SAM is limited in the…

Computer Vision and Pattern Recognition · Computer Science 2025-04-18 Yun-Cheng Li , Sen Lei , Yi-Tao Zhao , Heng-Chao Li , Jun Li , Antonio Plaza

The objective of Few-shot learning is to fully leverage the limited data resources for exploring the latent correlations within the data by applying algorithms and training a model with outstanding performance that can adequately meet the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Wenqing Zhao , Guojia Xie , Han Pan , Biao Yang , Weichuan Zhang

Underwater image enhancement plays a crucial role in providing reliable visual information for underwater platforms, since strong absorption and scattering in water-related environments generally lead to image quality degradation. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Yiqiang Zhou , Yifan Chen , Zhe Sun , Jijun Lu , Ye Zheng , Xuelong Li

Few-Shot Semantic Segmentation (FSS), which focuses on segmenting new classes in images using only a limited number of annotated examples, has recently progressed in data-scarce domains. However, in this work, we show that the existing FSS…

Computer Vision and Pattern Recognition · Computer Science 2025-06-17 Zhuohao Li , Zhicheng Huang , Wenchao Liu , Zhuxin Zhang , Jianming Miao

Multimodal medical image fusion (MMIF) extracts the most meaningful information from multiple source images, enabling a more comprehensive and accurate diagnosis. Achieving high-quality fusion results requires a careful balance of…

Computer Vision and Pattern Recognition · Computer Science 2025-06-19 Dan He , Weisheng Li , Guofen Wang , Yuping Huang , Shiqiang Liu

Although deep learning based methods have achieved great progress in unsupervised video object segmentation, difficult scenarios (e.g., visual similarity, occlusions, and appearance changing) are still not well-handled. To alleviate these…

Computer Vision and Pattern Recognition · Computer Science 2020-12-07 Daizong Liu , Dongdong Yu , Changhu Wang , Pan Zhou

One of the main challenges in deep learning-based underwater image enhancement is the limited availability of high-quality training data. Underwater images are difficult to capture and are often of poor quality due to the distortion and…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Alzayat Saleh , Marcus Sheaves , Dean Jerry , Mostafa Rahimi Azghadi

Underwater image enhancement (UIE) plays a crucial role in various marine applications, but it remains challenging due to the complex underwater environment. Current learning-based approaches frequently lack explicit incorporation of prior…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Yingtie Lei , Jia Yu , Yihang Dong , Changwei Gong , Ziyang Zhou , Chi-Man Pun

Ultra-Wide-Field (UWF) retinal imaging has revolutionized retinal diagnostics by providing a comprehensive view of the retina. However, it often suffers from quality-degrading factors such as blurring and uneven illumination, which obscure…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Weicheng Liao , Zan Chen , Jianyang Xie , Yalin Zheng , Yuhui Ma , Yitian Zhao

Full-waveform inversion (FWI) is a method that utilizes seismic data to invert the physical parameters of subsurface media by minimizing the difference between simulated and observed waveforms. Due to its ill-posed nature, FWI is…

Geophysics · Physics 2025-02-18 Xintong Dong , Zhengyi Yuan , Jun Lin , Shiqi Dong , Xunqian Tong , Yue Li

In clinical examinations and diagnoses, low-dose computed tomography (LDCT) is crucial for minimizing health risks compared with normal-dose computed tomography (NDCT). However, reducing the radiation dose compromises the signal-to-noise…

Image and Video Processing · Electrical Eng. & Systems 2024-07-02 Haoyu Zhao , Yuliang Gu , Zhou Zhao , Bo Du , Yongchao Xu , Rui Yu