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Although supervised deep normal estimators have recently shown impressive results on synthetic benchmarks, their performance deteriorates significantly in real-world scenarios due to the domain gap between synthetic and real data. Building…

Computer Vision and Pattern Recognition · Computer Science 2025-04-10 Jie Zhang , Minghui Nie , Changqing Zou , Jian Liu , Ligang Liu , Junjie Cao

Learning semantic segmentation models under image-level supervision is far more challenging than under fully supervised setting. Without knowing the exact pixel-label correspondence, most weakly-supervised methods rely on external models to…

Computer Vision and Pattern Recognition · Computer Science 2018-10-17 Zi-Yi Ke , Chiou-Ting Hsu

In contrast to the abundant research focusing on large-scale models, the progress in lightweight semantic segmentation appears to be advancing at a comparatively slower pace. However, existing compact methods often suffer from limited…

Computer Vision and Pattern Recognition · Computer Science 2023-09-13 Guoan Xu , Wenjing Jia , Tao Wu , Ligeng Chen

Rapid progress in 3D semantic segmentation is inseparable from the advances of deep network models, which highly rely on large-scale annotated data for training. To address the high cost and challenges of 3D point-level labeling, we present…

Computer Vision and Pattern Recognition · Computer Science 2021-10-18 Li Jiang , Shaoshuai Shi , Zhuotao Tian , Xin Lai , Shu Liu , Chi-Wing Fu , Jiaya Jia

This work addresses weakly-supervised image semantic segmentation based on image-level class labels. One common approach to this task is to propagate the activation scores of Class Activation Maps (CAMs) using a random-walk mechanism in…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Shun-Yi Pan , Cheng-You Lu , Shih-Po Lee , Wen-Hsiao Peng

RGB-T semantic segmentation has been widely adopted to handle hard scenes with poor lighting conditions by fusing different modality features of RGB and thermal images. Existing methods try to find an optimal fusion feature for…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Baihong Lin , Zengrong Lin , Yulan Guo , Yulan Zhang , Jianxiao Zou , Shicai Fan

In this paper, we propose 3DSS-VLG, a weakly supervised approach for 3D Semantic Segmentation with 2D Vision-Language Guidance, an alternative approach that a 3D model predicts dense-embedding for each point which is co-embedded with both…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 Xiaoxu Xu , Yitian Yuan , Jinlong Li , Qiudan Zhang , Zequn Jie , Lin Ma , Hao Tang , Nicu Sebe , Xu Wang

In the weakly supervised localization setting, supervision is given as an image-level label. We propose to employ an image classifier $f$ and to train a generative network $g$ that outputs, given the input image, a per-pixel weight map that…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Tal Shaharabany , Lior Wolf

Fine-grained object categorization aims for distinguishing objects of subordinate categories that belong to the same entry-level object category. The task is challenging due to the facts that (1) training images with ground-truth labels are…

Computer Vision and Pattern Recognition · Computer Science 2019-12-05 Yabin Zhang , Kui Jia , Zhixin Wang

Point cloud segmentation with scene-level annotations is a promising but challenging task. Currently, the most popular way is to employ the class activation map (CAM) to locate discriminative regions and then generate point-level pseudo…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Zhuheng Lu , Peng Zhang , Yuewei Dai , Weiqing Li , Zhiyong Su

Accurate identification of breast masses is crucial in diagnosing breast cancer; however, it can be challenging due to their small size and being camouflaged in surrounding normal glands. Worse still, it is also expensive in clinical…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Xinyu Xiong , Churan Wang , Wenxue Li , Guanbin Li

Representation learning from 3D point clouds is challenging due to their inherent nature of permutation invariance and irregular distribution in space. Existing deep learning methods follow a hierarchical feature extraction paradigm in…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Rahul Chakwate , Arulkumar Subramaniam , Anurag Mittal

Weakly supervised semantic segmentation (WSSS) aims at learning a semantic segmentation model with only image-level tags. Despite intensive research on deep learning approaches over a decade, there is still a significant performance gap…

Computer Vision and Pattern Recognition · Computer Science 2024-05-09 Qi Lai , Chi-Man Vong

Environmental perception systems are crucial for high-precision mapping and autonomous navigation, with LiDAR serving as a core sensor providing accurate 3D point cloud data. Efficiently processing unstructured point clouds while extracting…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Chuang Chen , Yi Lin , Bo Wang , Jing Hu , Xi Wu , Wenyi Ge

Weakly supervised semantic segmentation (WSSS) using only image-level labels can greatly reduce the annotation cost and therefore has attracted considerable research interest. However, its performance is still inferior to the fully…

Computer Vision and Pattern Recognition · Computer Science 2020-01-14 Qi Yao , Xiaojin Gong

3D point cloud semantic segmentation aims to group all points into different semantic categories, which benefits important applications such as point cloud scene reconstruction and understanding. Existing supervised point cloud semantic…

Computer Vision and Pattern Recognition · Computer Science 2023-03-29 Canyu Zhang , Zhenyao Wu , Xinyi Wu , Ziyu Zhao , Song Wang

Weakly supervised semantic segmentation has been a subject of increased interest due to the scarcity of fully annotated images. We introduce a new approach for solving weakly supervised semantic segmentation with deep Convolutional Neural…

Computer Vision and Pattern Recognition · Computer Science 2018-07-25 Rania Briq , Michael Moeller , Juergen Gall

We propose a novel algorithm for weakly supervised semantic segmentation based on image-level class labels only. In weakly supervised setting, it is commonly observed that trained model overly focuses on discriminative parts rather than the…

Computer Vision and Pattern Recognition · Computer Science 2018-01-09 Seunghoon Hong , Donghun Yeo , Suha Kwak , Honglak Lee , Bohyung Han

The availability of large-scale data sets is an essential pre-requisite for deep learning based semantic segmentation schemes. Since obtaining pixel-level labels is extremely expensive, supervising deep semantic segmentation networks using…

Computer Vision and Pattern Recognition · Computer Science 2019-09-23 Sinem Aslan , Marcello Pelillo

Weakly supervised semantic segmentation receives much research attention since it alleviates the need to obtain a large amount of dense pixel-wise ground-truth annotations for the training images. Compared with other forms of weak…

Computer Vision and Pattern Recognition · Computer Science 2018-03-08 Tianyi Zhang , Guosheng Lin , Jianfei Cai , Tong Shen , Chunhua Shen , Alex C. Kot