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LiDAR is one of the most crucial sensors for autonomous vehicle perception. However, current LiDAR-based point cloud perception algorithms lack comprehensive and rigorous LiDAR quality assessment methods, leading to uncertainty in detection…

计算机视觉与模式识别 · 计算机科学 2024-10-23 Ce Zhang , Azim Eskandarian

The 4K content can deliver a more immersive visual experience to consumers due to the huge improvement of spatial resolution. However, existing blind image quality assessment (BIQA) methods are not suitable for the original and upscaled 4K…

多媒体 · 计算机科学 2022-06-10 Wei Lu , Wei Sun , Xiongkuo Min , Wenhan Zhu , Quan Zhou , Jun He , Qiyuan Wang , Zicheng Zhang , Tao Wang , Guangtao Zhai

Perceptual losses have emerged as powerful tools for training networks to enhance Low-Dose Computed Tomography (LDCT) images, offering an alternative to traditional pixel-wise losses such as Mean Squared Error, which often lead to…

计算机视觉与模式识别 · 计算机科学 2025-10-01 Gabriel A. Viana , Luis F. Alves Pereira , Tsang Ing Ren , George D. C. Cavalcanti , Jan Sijbers

The design of image and video quality assessment (QA) algorithms is extremely important to benchmark and calibrate user experience in modern visual systems. A major drawback of the state-of-the-art QA methods is their limited ability to…

图像与视频处理 · 电气工程与系统科学 2025-12-30 Shankhanil Mitra , Diptanu De , Shika Rao , Rajiv Soundararajan

Decentralized collaborative learning under data heterogeneity and privacy constraints has rapidly advanced. However, existing solutions like federated learning, ensembles, and transfer learning, often fail to adequately serve the unique…

机器学习 · 计算机科学 2025-04-15 Norah Alballa , Wenxuan Zhang , Ziquan Liu , Ahmed M. Abdelmoniem , Mohamed Elhoseiny , Marco Canini

In rate-distortion optimization, the encoder settings are determined by maximizing a reconstruction quality measure subject to a constraint on the bit rate. One of the main challenges of this approach is to define a quality measure that can…

图像与视频处理 · 电气工程与系统科学 2021-08-11 Qi Liu , Hui Yuan , Raouf Hamzaoui , Honglei Su , Junhui Hou , Huan Yang

The past few years have witnessed the great success and prevalence of self-supervised representation learning within the language and 2D vision communities. However, such advancements have not been fully migrated to the field of 3D point…

计算机视觉与模式识别 · 计算机科学 2023-12-20 Qijian Zhang , Junhui Hou

Point cloud recognition is an essential task in industrial robotics and autonomous driving. Recently, several point cloud processing models have achieved state-of-the-art performances. However, these methods lack rotation robustness, and…

计算机视觉与模式识别 · 计算机科学 2021-12-30 Dongrui Liu , Chuanchuan Chen , Changqing Xu , Qi Cai , Lei Chu , Fei Wen , Robert Caiming Qiu

Unsupervised Domain Adaptation (UDA) aims to transfer knowledge from a labeled source domain to an unlabeled target domain. Recent UDA methods based on Vision Transformers (ViTs) have achieved strong performance through attention-based…

机器学习 · 计算机科学 2025-06-24 Zelin Zang , Fei Wang , Liangyu Li , Jinlin Wu , Chunshui Zhao , Zhen Lei , Baigui Sun

In this paper we investigate into the problem of image quality assessment (IQA) and enhancement via machine learning. This issue has long attracted a wide range of attention in computational intelligence and image processing communities,…

计算机视觉与模式识别 · 计算机科学 2019-04-19 Ke Gu , Dacheng Tao , Junfei Qiao , Weisi Lin

Domain Generalization (DG) has been recently explored to enhance the generalizability of Point Cloud Classification (PCC) models toward unseen domains. Prior works are based on convolutional networks, Transformer or Mamba architectures,…

计算机视觉与模式识别 · 计算机科学 2025-09-01 Hao Yang , Qianyu Zhou , Haijia Sun , Xiangtai Li , Xuequan Lu , Lizhuang Ma , Shuicheng Yan

Image super-resolution (SR) has been widely investigated in recent years. However, it is challenging to fairly estimate the performance of various SR methods, as the lack of reliable and accurate criteria for the perceptual quality.…

图像与视频处理 · 电气工程与系统科学 2024-10-28 Yuqing Liu , Qi Jia , Shanshe Wang , Siwei Ma , Wen Gao

Contemporary no-reference image quality assessment (NR-IQA) models can effectively quantify perceived image quality, often achieving strong correlations with human perceptual scores on standard IQA benchmarks. Yet, limited efforts have been…

计算机视觉与模式识别 · 计算机科学 2025-01-16 Weixia Zhang , Dingquan Li , Guangtao Zhai , Xiaokang Yang , Kede Ma

Face Image Quality Assessment (FIQA) aims to predict the utility of a face image for face recognition (FR) systems. State-of-the-art FIQA methods mainly rely on convolutional neural networks (CNNs), leaving the potential of Vision…

计算机视觉与模式识别 · 计算机科学 2025-08-25 Andrea Atzori , Fadi Boutros , Naser Damer

Knowledge tracing (KT) aims to predict learners' future performance based on historical learning interactions. However, existing KT models predominantly focus on data from a single course, limiting their ability to capture a comprehensive…

人工智能 · 计算机科学 2025-05-21 Wenkang Han , Wang Lin , Liya Hu , Zhenlong Dai , Yiyun Zhou , Mengze Li , Zemin Liu , Chang Yao , Jingyuan Chen

Face Image Quality Assessment (FIQA) aims to assess the recognition utility of face samples and is essential for reliable face recognition (FR) systems. Existing approaches require computationally expensive procedures such as multiple…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Guray Ozgur , Tahar Chettaoui , Eduarda Caldeira , Jan Niklas Kolf , Marco Huber , Andrea Atzori , Naser Damer , Fadi Boutros

The attention mechanism is blooming in computer vision nowadays. However, its application to video quality assessment (VQA) has not been reported. Evaluating the quality of in-the-wild videos is challenging due to the unknown of pristine…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Fengchuang Xing , Yuan-Gen Wang , Hanpin Wang , Leida Li , Guopu Zhu

This paper proposes a novel point-cloud-based place recognition system that adopts a deep learning approach for feature extraction. By using a convolutional neural network pre-trained on color images to extract features from a range image…

计算机视觉与模式识别 · 计算机科学 2018-10-24 Ting Sun , Ming Liu , Haoyang Ye , Dit-Yan Yeung

Full-reference (FR) image quality assessment (IQA) models assume a high quality "pristine" image as a reference against which to measure perceptual image quality. In many applications, however, the assumption that the reference image is of…

图像与视频处理 · 电气工程与系统科学 2018-02-12 Xiangxu Yu , Christos G. Bampis , Praful Gupta , Alan C. Bovik

Face image quality assessment (FIQA) plays a critical role in face recognition and verification systems, especially in uncontrolled, real-world environments. Although several methods have been proposed, general-purpose no-reference image…

计算机视觉与模式识别 · 计算机科学 2025-09-15 MohammadAli Hamidi , Hadi Amirpour , Luigi Atzori , Christian Timmerer