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LiDAR-produced point clouds are the major source for most state-of-the-art 3D object detectors. Yet, small, distant, and incomplete objects with sparse or few points are often hard to detect. We present Sparse2Dense, a new framework to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Tianyu Wang , Xiaowei Hu , Zhengzhe Liu , Chi-Wing Fu

Thermal infrared target tracking is crucial in applications such as surveillance, autonomous driving, and military operations. In this paper, we propose a novel tracker, SMTT, which effectively addresses common challenges in thermal…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Shang Zhang , HuiPan Guan , XiaoBo Ding , Ruoyan Xiong , Yue Zhang

Current CNN-based infrared small target detection(IRSTD) methods generally overlook the heterogeneity between shallow and deep features, leading to inefficient collaboration between shallow fine grained structural information and deep…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Taoran Yue , Xiaojin Lu , Jiaxi Cai , Yuanping Chen , Shibing Chu

In this paper, we propose an efficient feature pruning strategy for 3D small object detection. Conventional 3D object detection methods struggle on small objects due to the weak geometric information from a small number of points. Although…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Xiuwei Xu , Zhihao Sun , Ziwei Wang , Hongmin Liu , Jie Zhou , Jiwen Lu

While large-scale visual foundation models (VFMs) exhibit strong generalization across diverse visual domains, their potential for single-frame infrared small target (SIRST) detection remains largely unexplored. To fill this gap, we…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Chuang Yu , Jinmiao Zhao , Yunpeng Liu , Yaokun Li , Xiujun Shu , Yuanhao Feng , Bo Wang , Yimian Dai , Xiangyu Yue

Reconstructing high-dimensional spatiotemporal fields from sparse point-sensor measurements is a central challenge in learning parametric PDE dynamics. Existing approaches often struggle to generalize across trajectories and parameter…

Machine Learning · Computer Science 2026-02-05 Yanjie Tong , Peng Chen

Fully sparse 3D detection has attracted an increasing interest in the recent years. However, the sparsity of the features in these frameworks challenges the generation of proposals because of the limited diffusion process. In addition, the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Tianran Liu , Morteza Mousa Pasandi , Robert Laganiere

Point supervision has become a scalable solution to address dense annotation for infrared small target detection, but its performance is limited by two coupled bottlenecks: unstable pseudo-label evolution in cluttered, low-contrast infrared…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Zhu Liu , Yuanhang Yao , Ping Qian , Zihang Chen , Risheng Liu

Infrared small target detection (IRSTD) tasks are extremely challenging for two main reasons: 1) it is difficult to obtain accurate labelling information that is critical to existing methods, and 2) infrared (IR) small target information is…

Computer Vision and Pattern Recognition · Computer Science 2024-08-09 Jing Wu , Rixiang Ni , Feng Huang , Zhaobing Qiu , Liqiong Chen , Changhai Luo , Yunxiang Li , Youli Li

Infrared small target detection in an infrared search and track (IRST) system is a challenging task. This situation becomes more complicated when high gray-intensity structural backgrounds appear in the field of view (FoV) of the infrared…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Saed Moradi , Payman Moallem , Mohamad Farzan Sabahi

\textcolor{blue}{This is the pre-acceptance version, to read the final version please go to \href{https://ieeexplore.ieee.org/document/11156113}{IEEE Transactions on Geoscience and Remote Sensing on IEEE Xplore}.} Infrared small target…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Guoyi Zhang , Guangsheng Xu , Siyang Chen , Han Wang , Xiaohu Zhang

Infrared small target detection (ISTD) is one of the key techniques in image processing. Although deep unfolding networks (DUNs) have demonstrated promising performance in ISTD due to their model interpretability and data adaptability,…

Computer Vision and Pattern Recognition · Computer Science 2025-09-11 Jingjing Liu , Yinchao Han , Xianchao Xiu , Jianhua Zhang , Wanquan Liu

Enlarging input images is a straightforward and effective approach to promote small object detection. However, simple image enlargement is significantly expensive on both computations and GPU memory. In fact, small objects are usually…

Computer Vision and Pattern Recognition · Computer Science 2024-12-18 Kai Liu , Zhihang Fu , Sheng Jin , Ze Chen , Fan Zhou , Rongxin Jiang , Yaowu Chen , Jieping Ye

Semantic segmentation empowers numerous real-world applications, such as autonomous driving and augmented/mixed reality. These applications often operate on high-resolution images (e.g., 8 megapixels) to capture the fine details. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Zhijian Liu , Zhuoyang Zhang , Samir Khaki , Shang Yang , Haotian Tang , Chenfeng Xu , Kurt Keutzer , Song Han

Infrared small target detection (ISTD) plays a critical role in a wide range of civilian and military applications. Existing methods suffer from deficiencies in the localization of dim targets and the perception of contour information under…

Computer Vision and Pattern Recognition · Computer Science 2025-05-16 Jiakun Deng , Kexuan Li , Xingye Cui , Jiaxuan Li , Chang Long , Tian Pu , Zhenming Peng

Multi-frame infrared small target (MIRST) detection in satellite videos is a long-standing, fundamental yet challenging task for decades, and the challenges can be summarized as: First, extremely small target size, highly complex clutters &…

Computer Vision and Pattern Recognition · Computer Science 2025-02-21 Xinyi Ying , Li Liu , Zaipin Lin , Yangsi Shi , Yingqian Wang , Ruojing Li , Xu Cao , Boyang Li , Shilin Zhou , Wei An

Training with sparse annotations is known to reduce the performance of object detectors. Previous methods have focused on proxies for missing ground truth annotations in the form of pseudo-labels for unlabeled boxes. We observe that…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 Saksham Suri , Sai Saketh Rambhatla , Rama Chellappa , Abhinav Shrivastava

Single-frame infrared small target (SIRST) detection aims at separating small targets from clutter backgrounds. With the advances of deep learning, CNN-based methods have yielded promising results in generic object detection due to their…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Boyang Li , Chao Xiao , Longguang Wang , Yingqian Wang , Zaiping Lin , Miao Li , Wei An , Yulan Guo

Infrared small target detection (IRSTD) has recently benefitted greatly from U-shaped neural models. However, largely overlooking effective global information modeling, existing techniques struggle when the target has high similarities with…

Computer Vision and Pattern Recognition · Computer Science 2024-05-01 Shuai Yuan , Hanlin Qin , Xiang Yan , Naveed AKhtar , Ajmal Mian

Many targets are often very small in infrared images due to the long-distance imaging meachnism. UNet and its variants, as popular detection backbone networks, downsample the local features early and cause the irreversible loss of these…

Computer Vision and Pattern Recognition · Computer Science 2024-06-21 Wuzhou Quan , Wei Zhao , Weiming Wang , Haoran Xie , Fu Lee Wang , Mingqiang Wei