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Recent advancements in camera-based 3D object detection have introduced cross-modal knowledge distillation to bridge the performance gap with LiDAR 3D detectors, leveraging the precise geometric information in LiDAR point clouds. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Sanmin Kim , Youngseok Kim , Sihwan Hwang , Hyeonjun Jeong , Dongsuk Kum

We propose LU-Net -- for LiDAR U-Net, a new method for the semantic segmentation of a 3D LiDAR point cloud. Instead of applying some global 3D segmentation method such as PointNet, we propose an end-to-end architecture for LiDAR point cloud…

Computer Vision and Pattern Recognition · Computer Science 2019-09-02 Pierre Biasutti , Vincent Lepetit , Jean-François Aujol , Mathieu Brédif , Aurélie Bugeau

We propose an approach to semantic segmentation that achieves state-of-the-art supervised performance when applied in a zero-shot setting. It thus achieves results equivalent to those of the supervised methods, on each of the major semantic…

Computer Vision and Pattern Recognition · Computer Science 2024-05-01 Wei Yin , Yifan Liu , Chunhua Shen , Baichuan Sun , Anton van den Hengel

Semantic segmentation is a challenging computer vision task demanding a significant amount of pixel-level annotated data. Producing such data is a time-consuming and costly process, especially for domains with a scarcity of experts, such as…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Sara Mousavi , Zhenning Yang , Kelley Cross , Dawnie Steadman , Audris Mockus

LiDAR segmentation has become a crucial component of advanced autonomous driving systems. Recent range-view LiDAR segmentation approaches show promise for real-time processing. However, they inevitably suffer from corrupted contextual…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Xiang Xu , Lingdong Kong , Hui Shuai , Qingshan Liu

Incremental few-shot semantic segmentation (IFSS) targets at incrementally expanding model's capacity to segment new class of images supervised by only a few samples. However, features learned on old classes could significantly drift,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-13 Guangchen Shi , Yirui Wu , Jun Liu , Shaohua Wan , Wenhai Wang , Tong Lu

In this paper, we aim at addressing two critical issues in the 3D detection task, including the exploitation of multiple sensors~(namely LiDAR point cloud and camera image), as well as the inconsistency between the localization and…

Computer Vision and Pattern Recognition · Computer Science 2020-07-20 Tengteng Huang , Zhe Liu , Xiwu Chen , Xiang Bai

Referring Image Segmentation (RIS) - the problem of identifying objects in images through natural language sentences - is a challenging task currently mostly solved through supervised learning. However, while collecting referred annotation…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Francisco Eiras , Kemal Oksuz , Adel Bibi , Philip H. S. Torr , Puneet K. Dokania

Few-shot semantic segmentation is the task of learning to locate each pixel of the novel class in the query image with only a few annotated support images. The current correlation-based methods construct pair-wise feature correlations to…

Computer Vision and Pattern Recognition · Computer Science 2023-01-20 Huafeng Liu , Pai Peng , Tao Chen , Qiong Wang , Yazhou Yao , Xian-Sheng Hua

Fully-automatic execution is the ultimate goal for many Computer Vision applications. However, this objective is not always realistic in tasks associated with high failure costs, such as medical applications. For these tasks, semi-automatic…

Computer Vision and Pattern Recognition · Computer Science 2020-07-20 Jing Yu Koh , Duc Thanh Nguyen , Quang-Trung Truong , Sai-Kit Yeung , Alexander Binder

Semantic segmentation networks trained under full supervision for one type of lidar fail to generalize to unseen lidars without intervention. To reduce the performance gap under domain shifts, a recent trend is to leverage vision foundation…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Björn Michele , Alexandre Boulch , Gilles Puy , Tuan-Hung Vu , Renaud Marlet , Nicolas Courty

Current 3D semi-supervised segmentation methods face significant challenges such as limited consideration of contextual information and the inability to generate reliable pseudo-labels for effective unsupervised data use. To address these…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Sanaz Karimijafarbigloo , Reza Azad , Yury Velichko , Ulas Bagci , Dorit Merhof

Despite the remarkable performance of supervised medical image segmentation models, relying on a large amount of labeled data is impractical in real-world situations. Semi-supervised learning approaches aim to alleviate this challenge using…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 Yunyao Lu , Yihang Wu , Ahmad Chaddad , Tareef Daqqaq , Reem Kateb

While there are novel point cloud semantic segmentation schemes that continuously surpass state-of-the-art results, the success of learning an effective model usually rely on the availability of abundant labeled data. However, data…

Computer Vision and Pattern Recognition · Computer Science 2021-10-07 Puzuo Wang , Wei Yao

To alleviate the expensive human labeling, semi-supervised semantic segmentation employs a few labeled images and an abundant of unlabeled images to predict the pixel-level label map with the same size. Previous methods often adopt…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Ping Li , Junjie Chen , Li Yuan , Xianghua Xu , Mingli Song

3D segmentation is a core problem in computer vision and, similarly to many other dense prediction tasks, it requires large amounts of annotated data for adequate training. However, densely labeling 3D point clouds to employ…

Computer Vision and Pattern Recognition · Computer Science 2024-09-13 Ozan Unal , Christos Sakaridis , Luc Van Gool

Large-scale datasets with point-wise semantic and instance labels are crucial to 3D instance segmentation but also expensive. To leverage unlabeled data, previous semi-supervised 3D instance segmentation approaches have explored…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Yizheng Wu , Zhiyu Pan , Kewei Wang , Xingyi Li , Jiahao Cui , Liwen Xiao , Guosheng Lin , Zhiguo Cao

Segmentation using deep learning has shown promising directions in medical imaging as it aids in the analysis and diagnosis of diseases. Nevertheless, a main drawback of deep models is that they require a large amount of pixel-level labels,…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Sukesh Adiga , Jose Dolz , Herve Lombaert

Deep convolutional neural networks have shown outstanding performance in medical image segmentation tasks. The usual problem when training supervised deep learning methods is the lack of labeled data which is time-consuming and costly to…

Computer Vision and Pattern Recognition · Computer Science 2021-03-04 Suman Sedai , Bhavna Antony , Ravneet Rai , Katie Jones , Hiroshi Ishikawa , Joel Schuman , Wollstein Gadi , Rahil Garnavi

The lack of fine-grained 3D shape segmentation data is the main obstacle to developing learning-based 3D segmentation techniques. We propose an effective semi-supervised method for learning 3D segmentations from a few labeled 3D shapes and…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Chun-Yu Sun , Yu-Qi Yang , Hao-Xiang Guo , Peng-Shuai Wang , Xin Tong , Yang Liu , Heung-Yeung Shum