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We introduce a new class of multilevel, adaptive, dual-space methods for computing fast convolutional transforms. These methods can be applied to a broad class of kernels, from the Green's functions for classical partial differential…

数值分析 · 数学 2023-09-12 Shidong Jiang , Leslie Greengard

The success of self-attention (SA) in Transformer demonstrates the importance of non-local information to image super-resolution (SR), but the huge computing power required makes it difficult to implement lightweight models. To solve this…

图像与视频处理 · 电气工程与系统科学 2025-08-18 Yinggan Tang , Quanwei Hu

Orthogonal Frequency Division Multiplexing (OFDM) is the dominant waveform in modern wireless systems, but suffers performance degradation in high-mobility environments due to Doppler-induced inter-carrier interference and unreliable…

Although vision transformers (ViTs) have achieved great success in computer vision, the heavy computational cost hampers their applications to dense prediction tasks such as semantic segmentation on mobile devices. In this paper, we present…

计算机视觉与模式识别 · 计算机科学 2022-04-13 Wenqiang Zhang , Zilong Huang , Guozhong Luo , Tao Chen , Xinggang Wang , Wenyu Liu , Gang Yu , Chunhua Shen

Recent years have witnessed the remarkable performance of diffusion models in various vision tasks. However, for image restoration that aims to recover clear images with sharper details from given degraded observations, diffusion-based…

计算机视觉与模式识别 · 计算机科学 2023-10-10 Liyan Wang , Qinyu Yang , Cong Wang , Wei Wang , Jinshan Pan , Zhixun Su

Joint detection of drivable areas and road anomalies is very important for mobile robots. Recently, many semantic segmentation approaches based on convolutional neural networks (CNNs) have been proposed for pixel-wise drivable area and road…

计算机视觉与模式识别 · 计算机科学 2021-04-21 Hengli Wang , Rui Fan , Yuxiang Sun , Ming Liu

Recent studies show that Transformer has strong capability of building long-range dependencies, yet is incompetent in capturing high frequencies that predominantly convey local information. To tackle this issue, we present a novel and…

计算机视觉与模式识别 · 计算机科学 2022-05-27 Chenyang Si , Weihao Yu , Pan Zhou , Yichen Zhou , Xinchao Wang , Shuicheng Yan

Self-attention-based vision transformers (ViTs) have emerged as a highly competitive architecture in computer vision. Unlike convolutional neural networks (CNNs), ViTs are capable of global information sharing. With the development of…

计算机视觉与模式识别 · 计算机科学 2023-09-25 Zhenzhen Chu , Jiayu Chen , Cen Chen , Chengyu Wang , Ziheng Wu , Jun Huang , Weining Qian

Federated learning is a distributed learning paradigm in which multiple mobile clients train a global model while keeping data local. These mobile clients can have various available memory and network bandwidth. However, to achieve the best…

分布式、并行与集群计算 · 计算机科学 2024-09-16 Dixi Yao

With the success of Vision Transformers (ViTs) in computer vision tasks, recent arts try to optimize the performance and complexity of ViTs to enable efficient deployment on mobile devices. Multiple approaches are proposed to accelerate…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Yanyu Li , Ju Hu , Yang Wen , Georgios Evangelidis , Kamyar Salahi , Yanzhi Wang , Sergey Tulyakov , Jian Ren

Recently, MLP-like vision models have achieved promising performances on mainstream visual recognition tasks. In contrast with vision transformers and CNNs, the success of MLP-like models shows that simple information fusion operations…

计算机视觉与模式识别 · 计算机科学 2022-06-22 Ziyu Wang , Wenhao Jiang , Yiming Zhu , Li Yuan , Yibing Song , Wei Liu

By integrating the generative strengths of diffusion models with the representation capabilities of frequency-domain attention, DFAM effectively enhances reconstruction performance under low-SNR condi-tions. Experimental results demonstrate…

医学物理 · 物理学 2025-07-25 Xin Xie , Yu Guan , Zhuoxu Cui , Dong Liang , Qiegen Liu

Deep neural networks have demonstrated highly competitive performance in super-resolution (SR) for natural images by learning mappings from low-resolution (LR) to high-resolution (HR) images. However, hyperspectral super-resolution remains…

图像与视频处理 · 电气工程与系统科学 2025-05-02 Usman Muhammad , Jorma Laaksonen , Lyudmila Mihaylova

Accurate beam prediction is essential for maintaining reliable links and high spectral efficiency in dynamic low-altitude wireless networks. However, existing approaches often fail to capture the deep correlations across heterogeneous…

信号处理 · 电气工程与系统科学 2025-12-03 Xiaotong Zhao , Yuanhao Cui , Weijie Yuan , Ziye Jia , Heng Liu , Chengwen Xing

Depthwise convolution is becoming increasingly popular in modern efficient ConvNets, but its kernel size is often overlooked. In this paper, we systematically study the impact of different kernel sizes, and observe that combining the…

计算机视觉与模式识别 · 计算机科学 2019-12-03 Mingxing Tan , Quoc V. Le

Previous research on lightweight models has primarily focused on CNNs and Transformer-based designs. CNNs, with their local receptive fields, struggle to capture long-range dependencies, while Transformers, despite their global modeling…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Haoyang He , Jiangning Zhang , Yuxuan Cai , Hongxu Chen , Xiaobin Hu , Zhenye Gan , Yabiao Wang , Chengjie Wang , Yunsheng Wu , Lei Xie

Unified multimodal models can both understand and generate visual content within a single architecture. Existing models, however, remain data-hungry and too heavy for deployment on edge devices. We present Mobile-O, a compact…

Convolutional neural networks (CNN) have improved speech recognition performance greatly by exploiting localized time-frequency patterns. But these patterns are assumed to appear in symmetric and rigid kernels by the conventional CNN…

音频与语音处理 · 电气工程与系统科学 2025-06-19 Jiamin Xie , John H. L. Hansen

Monocular scene reconstruction from posed images is challenging due to the complexity of a large environment. Recent volumetric methods learn to directly predict the TSDF volume and have demonstrated promising results in this task. However,…

计算机视觉与模式识别 · 计算机科学 2023-03-10 Weihao Yuan , Xiaodong Gu , Heng Li , Zilong Dong , Siyu Zhu

Lightweight and efficiency are critical drivers for the practical application of image super-resolution (SR) algorithms. We propose a simple and effective approach, ShuffleMixer, for lightweight image super-resolution that explores large…

计算机视觉与模式识别 · 计算机科学 2022-05-31 Long Sun , Jinshan Pan , Jinhui Tang