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Visual anomaly detection is vital in real-world applications, such as industrial defect detection and medical diagnosis. However, most existing methods focus on local structural anomalies and fail to detect higher-level functional anomalies…

Computer Vision and Pattern Recognition · Computer Science 2025-02-17 Yun Peng , Xiao Lin , Nachuan Ma , Jiayuan Du , Chuangwei Liu , Chengju Liu , Qijun Chen

We propose LiDAL, a novel active learning method for 3D LiDAR semantic segmentation by exploiting inter-frame uncertainty among LiDAR frames. Our core idea is that a well-trained model should generate robust results irrespective of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-14 Zeyu Hu , Xuyang Bai , Runze Zhang , Xin Wang , Guangyuan Sun , Hongbo Fu , Chiew-Lan Tai

Segment Anything Model (SAM), known for its remarkable zero-shot segmentation capabilities, has garnered significant attention in the community. Nevertheless, its performance is challenged when dealing with what we refer to as visually…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Guangqian Guo , Pengfei Chen , Yong Guo , Huafeng Chen , Boqiang Zhang , Shan Gao

In this paper, we present an extension to LaserNet, an efficient and state-of-the-art LiDAR based 3D object detector. We propose a method for fusing image data with the LiDAR data and show that this sensor fusion method improves the…

Computer Vision and Pattern Recognition · Computer Science 2019-04-26 Gregory P. Meyer , Jake Charland , Darshan Hegde , Ankit Laddha , Carlos Vallespi-Gonzalez

Segmentation in medical imaging is a critical component for the diagnosis, monitoring, and treatment of various diseases and medical conditions. Presently, the medical segmentation landscape is dominated by numerous specialized deep…

Conventionally, human intuition defines vision as a modality of passive optical sensing, relying on ambient light to perceive the environment. However, active optical sensing, which involves emitting and receiving signals, offers unique…

Robotics · Computer Science 2026-02-27 Wei Gao , Jie Zhang , Mingle Zhao , Zhiyuan Zhang , Shu Kong , Maani Ghaffari , Dezhen Song , Cheng-Zhong Xu , Hui Kong

The advent of foundation models signals a new era in artificial intelligence. The Segment Anything Model (SAM) is the first foundation model for image segmentation. In this study, we evaluate SAM's ability to segment features from eye…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Virmarie Maquiling , Sean Anthony Byrne , Diederick C. Niehorster , Marcus Nyström , Enkelejda Kasneci

With the development of large language models, many remarkable linguistic systems like ChatGPT have thrived and achieved astonishing success on many tasks, showing the incredible power of foundation models. In the spirit of unleashing the…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Dingyuan Zhang , Dingkang Liang , Hongcheng Yang , Zhikang Zou , Xiaoqing Ye , Zhe Liu , Xiang Bai

The recent segmentation foundation model, Segment Anything Model (SAM), exhibits strong zero-shot segmentation capabilities, but it falls short in generating fine-grained precise masks. To address this limitation, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Beomyoung Kim , Chanyong Shin , Joonhyun Jeong , Hyungsik Jung , Se-Yun Lee , Sewhan Chun , Dong-Hyun Hwang , Joonsang Yu

Most commercially available Light Detection and Ranging (LiDAR)s measure the distances along a 2D section of the environment by sequentially sampling the free range along directions centered at the sensor's origin. When the sensor moves…

Robotics · Computer Science 2023-10-17 Omar Salem , Emanuele Giacomini , Leonardo Brizi , Luca Di Giammarino , Giorgio Grisetti

Segment Anything Model (SAM) has demonstrated impressive zero-shot segmentation capabilities across natural image domains, but it struggles to generalize to the unique challenges of remote sensing data, such as complex terrain, multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2025-09-22 Tianyang Wang , Xi Xiao , Gaofei Chen , Hanzhang Chi , Qi Zhang , Guo Cheng , Yingrui Ji

We introduce SAM3D, a new approach to semi-automatic zero-shot segmentation of 3D images building on the existing Segment Anything Model. We achieve fast and accurate segmentations in 3D images with a four-step strategy involving: user…

Image and Video Processing · Electrical Eng. & Systems 2024-08-09 Trevor J. Chan , Aarush Sahni , Yijin Fang , Jie Li , Alisha Luthra , Alison Pouch , Chamith S. Rajapakse

Structure from Motion (SfM) often fails to estimate accurate poses in environments that lack suitable visual features. In such cases, the quality of the final 3D mesh, which is contingent on the accuracy of those estimates, is reduced. One…

Computer Vision and Pattern Recognition · Computer Science 2021-04-08 Victor Amblard , Timothy P. Osedach , Arnaud Croux , Andrew Speck , John J. Leonard

The recently introduced Segment Anything Model (SAM) combines a clever architecture and large quantities of training data to obtain remarkable image segmentation capabilities. However, it fails to reproduce such results for…

Computer Vision and Pattern Recognition · Computer Science 2023-06-13 Tal Shaharabany , Aviad Dahan , Raja Giryes , Lior Wolf

LiDAR is used in autonomous driving to provide 3D spatial information and enable accurate perception in off-road environments, aiding in obstacle detection, mapping, and path planning. Learning-based LiDAR semantic segmentation utilizes…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 Kasi Viswanath , Peng Jiang , Sujit PB , Srikanth Saripalli

Camera and 3D LiDAR sensors have become indispensable devices in modern autonomous driving vehicles, where the camera provides the fine-grained texture, color information in 2D space and LiDAR captures more precise and farther-away distance…

Computer Vision and Pattern Recognition · Computer Science 2021-08-18 Lin Zhao , Hui Zhou , Xinge Zhu , Xiao Song , Hongsheng Li , Wenbing Tao

Image restoration is a low-level visual task, and most CNN methods are designed as black boxes, lacking transparency and intrinsic aesthetics. Many unsupervised approaches ignore the degradation of visible information in low-light scenes,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Qihan Zhao , Xiaofeng Zhang , Hao Tang , Chaochen Gu , Shanying Zhu

Robust and accurate segmentation of scenes has become one core functionality in various visual recognition and navigation tasks. This has inspired the recent development of Segment Anything Model (SAM), a foundation model for general mask…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Aoran Xiao , Weihao Xuan , Heli Qi , Yun Xing , Naoto Yokoya , Shijian Lu

Zero-shot 6D object pose estimation involves the detection of novel objects with their 6D poses in cluttered scenes, presenting significant challenges for model generalizability. Fortunately, the recent Segment Anything Model (SAM) has…

Computer Vision and Pattern Recognition · Computer Science 2024-03-07 Jiehong Lin , Lihua Liu , Dekun Lu , Kui Jia

This article presents a complete semantic scene understanding workflow using only a single 2D lidar. This fills the gap in 2D lidar semantic segmentation, thereby enabling the rethinking and enhancement of existing 2D lidar-based algorithms…

Robotics · Computer Science 2026-01-27 Zhanteng Xie , Yipeng Pan , Yinqiang Zhang , Jia Pan , Philip Dames