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Pre-training a recognition model with contrastive learning on a large dataset of unlabeled data has shown great potential to boost the performance of a downstream task, e.g., image classification. However, in domains such as medical…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Jizong Peng , Ping Wang , Chrisitian Desrosiers , Marco Pedersoli

Semantic Bird's Eye View (BEV) maps offer a rich representation with strong occlusion reasoning for various decision making tasks in autonomous driving. However, most BEV mapping approaches employ a fully supervised learning paradigm that…

计算机视觉与模式识别 · 计算机科学 2024-05-30 Nikhil Gosala , Kürsat Petek , B Ravi Kiran , Senthil Yogamani , Paulo Drews-Jr , Wolfram Burgard , Abhinav Valada

In this paper, an automatic labelling process is presented for automotive datasets, leveraging on complementary information from LiDAR and camera. The generated labels are then used as ground truth with the corresponding 4D radar data as…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Botao Sun , Ignacio Roldan , Francesco Fioranelli

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…

计算机视觉与模式识别 · 计算机科学 2024-05-01 Wei Yin , Yifan Liu , Chunhua Shen , Baichuan Sun , Anton van den Hengel

Training deep convolutional neural networks usually requires a large amount of labeled data. However, it is expensive and time-consuming to annotate data for medical image segmentation tasks. In this paper, we present a novel…

计算机视觉与模式识别 · 计算机科学 2019-07-17 Lequan Yu , Shujun Wang , Xiaomeng Li , Chi-Wing Fu , Pheng-Ann Heng

Weakly supervised LiDAR semantic segmentation has made significant strides with limited labeled data. However, most existing methods focus on the network training under weak supervision, while efficient annotation strategies remain largely…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Yilong Chen , Zongyi Xu , xiaoshui Huang , Ruicheng Zhang , Xinqi Jiang , Xinbo Gao

We study the problem of learning to estimate the 3D object pose from a few labelled examples and a collection of unlabelled data. Our main contribution is a learning framework, neural view synthesis and matching, that can transfer the 3D…

计算机视觉与模式识别 · 计算机科学 2021-10-28 Angtian Wang , Shenxiao Mei , Alan Yuille , Adam Kortylewski

The performance of supervised deep learning methods for medical image segmentation is often limited by the scarcity of labeled data. As a promising research direction, semi-supervised learning addresses this dilemma by leveraging unlabeled…

图像与视频处理 · 电气工程与系统科学 2024-05-13 Zihang Liu , Chunhui Zhao

We show that it is possible to learn semantic segmentation from very limited amounts of manual annotations, by enforcing geometric 3D constraints between multiple views. More exactly, image locations corresponding to the same physical 3D…

计算机视觉与模式识别 · 计算机科学 2019-01-10 Sinisa Stekovic , Friedrich Fraundorfer , Vincent Lepetit

Semi-supervised semantic segmentation methods leverage unlabeled data by pseudo-labeling them. Thus the success of these methods hinges on the reliablility of the pseudo-labels. Existing methods mostly choose high-confidence pixels in an…

计算机视觉与模式识别 · 计算机科学 2024-07-18 Prantik Howlader , Hieu Le , Dimitris Samaras

Semantic Segmentation combines two sub-tasks: the identification of pixel-level image masks and the application of semantic labels to those masks. Recently, so-called Foundation Models have been introduced; general models trained on very…

计算机视觉与模式识别 · 计算机科学 2023-10-03 David Balaban , Justin Medich , Pranay Gosar , Justin Hart

Unsupervised semantic segmentation requires assigning a label to every pixel without any human annotations. Despite recent advances in self-supervised representation learning for individual images, unsupervised semantic segmentation with…

计算机视觉与模式识别 · 计算机科学 2022-07-27 Wenbin He , William Surmeier , Arvind Kumar Shekar , Liang Gou , Liu Ren

Human action understanding is crucial for the advancement of multimodal systems. While recent developments, driven by powerful large language models (LLMs), aim to be general enough to cover a wide range of categories, they often overlook…

计算机视觉与模式识别 · 计算机科学 2025-01-03 Yongle Huang , Haodong Chen , Zhenbang Xu , Zihan Jia , Haozhou Sun , Dian Shao

The rapid development of deep learning has driven significant progress in image semantic segmentation - a fundamental task in computer vision. Semantic segmentation algorithms often depend on the availability of pixel-level labels (i.e.,…

计算机视觉与模式识别 · 计算机科学 2024-12-03 Zhaozheng Chen , Qianru Sun

In this study, we present a novel LiDAR-based semantic segmentation framework tailored for autonomous forklifts operating in complex outdoor environments. Central to our approach is the integration of a dual LiDAR system, which combines…

机器人学 · 计算机科学 2025-05-29 Benjamin Serfling , Hannes Reichert , Lorenzo Bayerlein , Konrad Doll , Kati Radkhah-Lens

Point cloud datasets for perception tasks in the context of autonomous driving often rely on high resolution 64-layer Light Detection and Ranging (LIDAR) scanners. They are expensive to deploy on real-world autonomous driving sensor…

计算机视觉与模式识别 · 计算机科学 2020-05-28 Leonardo Gigli , B Ravi Kiran , Thomas Paul , Andres Serna , Nagarjuna Vemuri , Beatriz Marcotegui , Santiago Velasco-Forero

Although LiDAR sensors are crucial for autonomous systems due to providing precise depth information, they struggle with capturing fine object details, especially at a distance, due to sparse and non-uniform data. Recent advances introduced…

计算机视觉与模式识别 · 计算机科学 2023-09-19 Tiago Cortinhal , Idriss Gouigah , Eren Erdal Aksoy

The unsupervised 3D object detection is to accurately detect objects in unstructured environments with no explicit supervisory signals. This task, given sparse LiDAR point clouds, often results in compromised performance for detecting…

计算机视觉与模式识别 · 计算机科学 2024-07-12 Ruiyang Zhang , Hu Zhang , Hang Yu , Zhedong Zheng

In this paper we address the challenging problem of domain adaptation in LiDAR semantic segmentation. We consider the setting where we have a fully-labeled data set from source domain and a target domain with a few labeled and many…

计算机视觉与模式识别 · 计算机科学 2022-03-22 Eduardo R. Corral-Soto , Mrigank Rochan , Yannis Y. He , Shubhra Aich , Yang Liu , Liu Bingbing

LiDAR point cloud semantic segmentation plays a crucial role in autonomous driving. In recent years, semi-supervised methods have gained popularity due to their significant reduction in annotation labor and time costs. Current…

计算机视觉与模式识别 · 计算机科学 2025-03-25 R. D. Lin , Pengcheng Weng , Yinqiao Wang , Han Ding , Jinsong Han , Fei Wang