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LiDAR-based 3D object detection plays a critical role for reliable and safe autonomous driving systems. However, existing detectors often produce overly confident predictions for objects not belonging to known categories, posing significant…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Michael Kösel , Marcel Schreiber , Michael Ulrich , Claudius Gläser , Klaus Dietmayer

Indiscernible marine object counting encounters numerous challenges, including limited visibility in underwater scenes, mutual occlusion and overlap among objects, and the dynamic similarity in appearance, color, and texture between the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Chengzhi Ma , Kunqian Li , Shuaixin Liu , Han Mei

UAV-borne hyperspectral remote sensing has emerged as a promising approach for underwater target detection (UTD). However, its effectiveness is hindered by spectral distortions in nearshore environments, which compromise the accuracy of…

Computer Vision and Pattern Recognition · Computer Science 2025-02-21 Jiahao Qi , Chuanhong Zhou , Xingyue Liu , Chen Chen , Dehui Zhu , Kangcheng Bin , Ping Zhong

In this paper, we address the detection of co-occurring salient objects (CoSOD) in an image group using frequency statistics in an unsupervised manner, which further enable us to develop a semi-supervised method. While previous works have…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Souradeep Chakraborty , Shujon Naha , Muhammet Bastan , Amit Kumar K C , Dimitris Samaras

Unsupervised anomaly detection (UAD) attracts a lot of research interest and drives widespread applications, where only anomaly-free samples are available for training. Some UAD applications intend to further locate the anomalous regions…

Computer Vision and Pattern Recognition · Computer Science 2023-08-30 Yixuan Zhou , Xing Xu , Jingkuan Song , Fumin Shen , Heng Tao Shen

Underwater scenes intrinsically involve degradation problems owing to heterogeneous ocean elements. Prevailing underwater image enhancement (UIE) methods stick to straightforward feature modeling to learn the mapping function, which leads…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Zhixiong Huang , Xinying Wang , Chengpei Xu , Jinjiang Li , Lin Feng

LiDAR-based 3D object detection has become an essential part of automated driving due to its ability to localize and classify objects precisely in 3D. However, object detectors face a critical challenge when dealing with unknown foreground…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Michael Kösel , Marcel Schreiber , Michael Ulrich , Claudius Gläser , Klaus Dietmayer

Underwater acoustic target recognition is a difficult task owing to the intricate nature of underwater acoustic signals. The complex underwater environments, unpredictable transmission channels, and dynamic motion states greatly impact the…

Sound · Computer Science 2024-05-01 Yuan Xie , Jiawei Ren , Ji Xu

With the goal of identifying pixel-wise salient object regions from each input image, salient object detection (SOD) has been receiving great attention in recent years. One kind of mainstream SOD methods is formed by a bottom-up feature…

Computer Vision and Pattern Recognition · Computer Science 2021-02-19 Chaowei Fang , Haibin Tian , Dingwen Zhang , Qiang Zhang , Jungong Han , Junwei Han

Underwater docking is critical to enable the persistent operation of Autonomous Underwater Vehicles (AUVs). For this, the AUV must be capable of detecting and localizing the docking station, which is complex due to the highly dynamic…

Robotics · Computer Science 2024-10-28 Jalil Chavez-Galaviz , Jianwen Li , Matthew Bergman , Miras Mengdibayev , Nina Mahmoudian

Underwater Camouflaged Object Detection (UCOD) aims to identify objects that blend seamlessly into underwater environments. This task is critically important to marine ecology. However, it remains largely underexplored and accurate…

Computer Vision and Pattern Recognition · Computer Science 2025-09-08 Xinxin Huang , Han Sun , Ningzhong Liu , Huiyu Zhou , Yinan Yao

Vortex beam carrying orbital angular momentum (OAM) is disturbed by oceanic turbulence (OT) when propagating in underwater wireless optical communication (UWOC) system. Adaptive optics (AO) is used to compensate for distortion and improve…

Image and Video Processing · Electrical Eng. & Systems 2022-06-22 Haichao Zhan , Le Wang , Wennai Wang , Shengmei Zhao

The parameters estimation of a system using indirect measurements over the same system is a problem that occurs in many fields of engineering, known as the inverse problem. It also happens in the field of underwater acoustic, especially in…

Signal Processing · Electrical Eng. & Systems 2020-03-31 Marco Apolinario , Samuel Huaman Bustamante , Giorgio Morales , Joel Telles , Daniel Diaz

Despite significant advances in generic object detection, a persistent performance gap remains for tiny objects compared to normal-scale objects. We demonstrate that tiny objects are highly sensitive to annotation noise, where optimizing…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Huixin Sun , Linlin Yang , Ronyu Chen , Kerui Gu , Baochang Zhang , Angela Yao , Xianbin Cao

During the forward pass of Deep Neural Networks (DNNs), inputs gradually transformed from low-level features to high-level conceptual labels. While features at different layers could summarize the important factors of the inputs at varying…

Machine Learning · Computer Science 2022-03-02 Haoliang Wang , Chen Zhao , Xujiang Zhao , Feng Chen

Out-of-distribution (OOD) detection, which maps high-dimensional data into a scalar OOD score, is critical for the reliable deployment of machine learning models. A key challenge in recent research is how to effectively leverage and…

Machine Learning · Computer Science 2026-02-06 Claus Hofmann , Christian Huber , Bernhard Lehner , Daniel Klotz , Sepp Hochreiter , Werner Zellinger

Multimodal fusion, leveraging data like vision and language, is rapidly gaining traction. This enriched data representation improves performance across various tasks. Existing methods for out-of-distribution (OOD) detection, a critical area…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Jinglun Li , Xinyu Zhou , Kaixun Jiang , Lingyi Hong , Pinxue Guo , Zhaoyu Chen , Weifeng Ge , Wenqiang Zhang

Atmospheric turbulence degrades the performance of free-space optical (FSO) communication and remote sensing systems by introducing phase and intensity distortions. While a majority of research focuses on mitigating these effects to ensure…

Building a robust underwater acoustic recognition system in real-world scenarios is challenging due to the complex underwater environment and the dynamic motion states of targets. A promising optimization approach is to leverage the…

Sound · Computer Science 2024-11-06 Yuan Xie , Xiaowei Zhang , Jiawei Ren , Ji Xu

Underwater images often suffer from severe color distortion, low contrast, and a hazy appearance due to wavelength-dependent light absorption and scattering. Simultaneously, existing deep learning models exhibit high computational…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Munsif Ali , Najmul Hassan , Lucia Ventura , Davide Di Bari , Simonepietro Canese
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