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Point cloud analysis has received much attention recently; and segmentation is one of the most important tasks. The success of existing approaches is attributed to deep network design and large amount of labelled training data, where the…

Computer Vision and Pattern Recognition · Computer Science 2020-04-09 Xun Xu , Gim Hee Lee

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

Understanding the 3D world without supervision is currently a major challenge in computer vision as the annotations required to supervise deep networks for tasks in this domain are expensive to obtain on a large scale. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Octave Mariotti , Oisin Mac Aodha , Hakan Bilen

Within the past decade, the rise of applications based on artificial intelligence (AI) in general and machine learning (ML) in specific has led to many significant contributions within different domains. The applications range from robotics…

Computer Vision and Pattern Recognition · Computer Science 2021-03-09 Christoph Sager , Patrick Zschech , Niklas Kühl

Image-based 3D detection is an indispensable component of the perception system for autonomous driving. However, it still suffers from the unsatisfying performance, one of the main reasons for which is the limited training data.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-16 Xinzhu Ma , Yuan Meng , Yinmin Zhang , Lei Bai , Jun Hou , Shuai Yi , Wanli Ouyang

Monocular 3D object detection has become a mainstream approach in automatic driving for its easy application. A prominent advantage is that it does not need LiDAR point clouds during the inference. However, most current methods still rely…

Computer Vision and Pattern Recognition · Computer Science 2023-03-16 Runzhou Tao , Wencheng Han , Zhongying Qiu , Cheng-zhong Xu , Jianbing Shen

In this case study, we present a data-efficient point cloud segmentation pipeline and training framework for robust segmentation of unimproved roads and seven other classes. Our method employs a two-stage training framework: first, a…

Image and Video Processing · Electrical Eng. & Systems 2025-08-29 Andrew Yarovoi , Christopher R. Valenta

While modern visual recognition systems have made significant advancements, many continue to struggle with the open problem of learning from few exemplars. This paper focuses on the task of object detection in the setting where object…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Phi Vu Tran

Deep learning techniques for point cloud data have demonstrated great potentials in solving classical problems in 3D computer vision such as 3D object classification and segmentation. Several recent 3D object classification methods have…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Mikaela Angelina Uy , Quang-Hieu Pham , Binh-Son Hua , Duc Thanh Nguyen , Sai-Kit Yeung

Accurate prediction of material properties facilitates the discovery of novel materials with tailored functionalities. Deep learning models have recently shown superior accuracy and flexibility in capturing structure-property relationships.…

Machine Learning · Computer Science 2025-04-30 Chowdhury Mohammad Abid Rahman , Aldo H. Romero , Prashnna K. Gyawali

With the overwhelming trend of mask image modeling led by MAE, generative pre-training has shown a remarkable potential to boost the performance of fundamental models in 2D vision. However, in 3D vision, the over-reliance on…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Ziyi Wang , Xumin Yu , Yongming Rao , Jie Zhou , Jiwen Lu

3D point cloud understanding has made great progress in recent years. However, one major bottleneck is the scarcity of annotated real datasets, especially compared to 2D object detection tasks, since a large amount of labor is involved in…

Computer Vision and Pattern Recognition · Computer Science 2021-08-18 Yongming Rao , Benlin Liu , Yi Wei , Jiwen Lu , Cho-Jui Hsieh , Jie Zhou

Pretraining has been shown to improve performance in many domains, including semantic segmentation, especially in domains with limited labelled data. In this work, we perform a large-scale evaluation and benchmarking of various pretraining…

Computer Vision and Pattern Recognition · Computer Science 2024-02-28 David Torpey , Lawrence Pratt , Richard Klein

Self-supervised learning methods have witnessed a recent surge of interest after proving successful in multiple application fields. In this work, we leverage these techniques, and we propose 3D versions for five different self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Aiham Taleb , Winfried Loetzsch , Noel Danz , Julius Severin , Thomas Gaertner , Benjamin Bergner , Christoph Lippert

Deep neural networks produce state-of-the-art results when trained on a large number of labeled examples but tend to overfit when small amounts of labeled examples are used for training. Creating a large number of labeled examples requires…

Computer Vision and Pattern Recognition · Computer Science 2021-09-13 Attaullah Sahito , Eibe Frank , Bernhard Pfahringer

Current LiDAR-based 3D object detectors for autonomous driving are almost entirely trained on human-annotated data collected in specific geographical domains with specific sensor setups, making it difficult to adapt to a different domain.…

Computer Vision and Pattern Recognition · Computer Science 2023-06-05 Jenny Xu , Steven L. Waslander

Deep neural networks for aerial image segmentation require large amounts of labeled data, but high-quality aerial datasets with precise annotations are scarce and costly to produce. To address this limitation, we propose a self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 Rupert Polley , Sai Vignesh Abishek Deenadayalan , J. Marius Zöllner

The scale diversity of point cloud data presents significant challenges in developing unified representation learning techniques for 3D vision. Currently, there are few unified 3D models, and no existing pre-training method is equally…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Ziyi Wang , Yanran Zhang , Jie Zhou , Jiwen Lu

Self-training is a simple yet effective method for semi-supervised learning, during which pseudo-label selection plays an important role for handling confirmation bias. Despite its popularity, applying self-training to landmark detection…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Haibo Jin , Haoxuan Che , Hao Chen

Pre-training on large-scale unlabeled datasets contribute to the model achieving powerful performance on 3D vision tasks, especially when annotations are limited. However, existing rendering-based self-supervised frameworks are…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Hao Liu , Minglin Chen , Yanni Ma , Haihong Xiao , Ying He