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In recent years, the need for semantic segmentation has arisen across several different applications and environments. However, the expense and redundancy of annotation often limits the quantity of labels available for training in any…

计算机视觉与模式识别 · 计算机科学 2019-09-25 Tarun Kalluri , Girish Varma , Manmohan Chandraker , C V Jawahar

This study deals with semantic segmentation of high-resolution (aerial) images where a semantic class label is assigned to each pixel via supervised classification as a basis for automatic map generation. Recently, deep convolutional neural…

计算机视觉与模式识别 · 计算机科学 2017-11-22 Pascal Kaiser , Jan Dirk Wegner , Aurelien Lucchi , Martin Jaggi , Thomas Hofmann , Konrad Schindler

Moving object segmentation is a crucial task for safe and reliable autonomous mobile systems like self-driving cars, improving the reliability and robustness of subsequent tasks like SLAM or path planning. While the segmentation of camera…

计算机视觉与模式识别 · 计算机科学 2025-11-05 Leon Schwarzer , Matthias Zeller , Daniel Casado Herraez , Simon Dierl , Michael Heidingsfeld , Cyrill Stachniss

Semantic segmentation of aerial point cloud data can be utilised to differentiate which points belong to classes such as ground, buildings, or vegetation. Point clouds generated from aerial sensors mounted to drones or planes can utilise…

计算机视觉与模式识别 · 计算机科学 2022-11-30 Matthew Howe , Boris Repasky , Timothy Payne

Reducing the quantity of annotations required for supervised training is vital when labels are scarce and costly. This reduction is particularly important for semantic segmentation tasks involving 3D datasets, which are often significantly…

计算机视觉与模式识别 · 计算机科学 2023-09-06 Andrej Janda , Brandon Wagstaff , Edwin G. Ng , Jonathan Kelly

Unsupervised learning on 3D point clouds has undergone a rapid evolution, especially thanks to data augmentation-based contrastive methods. However, data augmentation is not ideal as it requires a careful selection of the type of…

计算机视觉与模式识别 · 计算机科学 2022-10-07 Guofeng Mei , Cristiano Saltori , Fabio Poiesi , Jian Zhang , Elisa Ricci , Nicu Sebe , Qiang Wu

Training deep networks for semantic segmentation requires large amounts of labeled training data, which presents a major challenge in practice, as labeling segmentation masks is a highly labor-intensive process. To address this issue, we…

计算机视觉与模式识别 · 计算机科学 2021-04-06 Lukas Hoyer , Dengxin Dai , Yuhua Chen , Adrian Köring , Suman Saha , Luc Van Gool

Active learning generally involves querying the most representative samples for human labeling, which has been widely studied in many fields such as image classification and object detection. However, its potential has not been explored in…

计算机视觉与模式识别 · 计算机科学 2020-12-10 Jun Wang , Shaoguo Wen , Kaixing Chen , Jianghua Yu , Xin Zhou , Peng Gao , Changsheng Li , Guotong Xie

Unsupervised semantic segmentation aims to achieve high-quality semantic grouping without human-labeled annotations. With the advent of self-supervised pre-training, various frameworks utilize the pre-trained features to train prediction…

计算机视觉与模式识别 · 计算机科学 2026-05-11 Junho Kim , Byung-Kwan Lee , Yong Man Ro

Semantic segmentation of 3D LiDAR point clouds is important in urban remote sensing for understanding real-world street environments. This task, by projecting LiDAR point clouds and 3D semantic labels as sparse maps, can be reformulated as…

计算机视觉与模式识别 · 计算机科学 2026-02-24 Xiaoyu Dong , Tiankui Xian , Wanshui Gan , Naoto Yokoya

We present the Dayton Annotated LiDAR Earth Scan (DALES) data set, a new large-scale aerial LiDAR data set with over a half-billion hand-labeled points spanning 10 square kilometers of area and eight object categories. Large annotated point…

计算机视觉与模式识别 · 计算机科学 2020-04-28 Nina Varney , Vijayan K. Asari , Quinn Graehling

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…

计算机视觉与模式识别 · 计算机科学 2020-04-09 Xun Xu , Gim Hee Lee

Unsupervised image segmentation aims at grouping different semantic patterns in an image without the use of human annotation. Similarly, image clustering searches for groupings of images based on their semantic content without supervision.…

计算机视觉与模式识别 · 计算机科学 2024-01-18 Isaac Wasserman , Jeova Farias Sales Rocha Neto

Remote sensing data is crucial for applications ranging from monitoring forest fires and deforestation to tracking urbanization. Most of these tasks require dense pixel-level annotations for the model to parse visual information from…

计算机视觉与模式识别 · 计算机科学 2021-10-18 Shasvat Desai , Debasmita Ghose

Since the preparation of labeled data for training semantic segmentation networks of point clouds is a time-consuming process, weakly supervised approaches have been introduced to learn from only a small fraction of data. These methods are…

计算机视觉与模式识别 · 计算机科学 2022-09-16 Gengxin Liu , Oliver van Kaick , Hui Huang , Ruizhen Hu

Semantic segmentation is a crucial step in many Earth observation tasks. Large quantity of pixel-level annotation is required to train deep networks for semantic segmentation. Earth observation techniques are applied to varieties of…

计算机视觉与模式识别 · 计算机科学 2021-08-11 Sudipan Saha , Lichao Mou , Muhammad Shahzad , Xiao Xiang Zhu

In the task of 3D Aerial-view Scene Semantic Segmentation (3D-AVS-SS), traditional methods struggle to address semantic ambiguity caused by scale variations and structural occlusions in aerial images. This limits their segmentation accuracy…

计算机视觉与模式识别 · 计算机科学 2025-08-15 Xu Tang , Junan Jia , Yijing Wang , Jingjing Ma , Xiangrong Zhang

Semi-supervised learning (SSL), thanks to the significant reduction of data annotation costs, has been an active research topic for large-scale 3D scene understanding. However, the existing SSL-based methods suffer from severe training…

计算机视觉与模式识别 · 计算机科学 2024-01-17 Mengtian Li , Shaohui Lin , Zihan Wang , Yunhang Shen , Baochang Zhang , Lizhuang Ma

A main bottleneck of learning-based robotic scene understanding methods is the heavy reliance on extensive annotated training data, which often limits their generalization ability. In LiDAR panoptic segmentation, this challenge becomes even…

计算机视觉与模式识别 · 计算机科学 2025-07-10 Ahmet Selim Çanakçı , Niclas Vödisch , Kürsat Petek , Wolfram Burgard , Abhinav Valada

Deep generative models trained with large amounts of unlabelled data have proven to be powerful within the domain of unsupervised learning. Many real life data sets contain a small amount of labelled data points, that are typically…

机器学习 · 统计学 2017-04-04 Lars Maaløe , Marco Fraccaro , Ole Winther