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We address semantic 3D part segmentation: decomposing objects into parts with meaningful names. While datasets exist with part annotations, their definitions are inconsistent across datasets, limiting robust training. Previous methods…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Soumava Paul , Prakhar Kaushik , Ankit Vaidya , Anand Bhattad , Alan Yuille

3D semantic scene understanding tasks have achieved great success with the emergence of deep learning, but often require a huge amount of manually annotated training data. To alleviate the annotation cost, we propose the first…

Computer Vision and Pattern Recognition · Computer Science 2023-08-04 Shichao Dong , Guosheng Lin

Detecting semantic parts of an object is a challenging task in computer vision, particularly because it is hard to construct large annotated datasets due to the difficulty of annotating semantic parts. In this paper we present an approach…

Computer Vision and Pattern Recognition · Computer Science 2019-09-16 Yutong Bai , Qing Liu , Lingxi Xie , Weichao Qiu , Yan Zheng , Alan Yuille

3D part segmentation is a crucial and challenging task in 3D perception, playing a vital role in applications such as robotics, 3D generation, and 3D editing. Recent methods harness the powerful Vision Language Models (VLMs) for 2D-to-3D…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Yunhan Yang , Yukun Huang , Yuan-Chen Guo , Liangjun Lu , Xiaoyang Wu , Edmund Y. Lam , Yan-Pei Cao , Xihui Liu

3D semantic segmentation is a fundamental building block for several scene understanding applications such as autonomous driving, robotics and AR/VR. Several state-of-the-art semantic segmentation models suffer from the part…

Computer Vision and Pattern Recognition · Computer Science 2021-11-17 Anirud Thyagharajan , Benjamin Ummenhofer , Prashant Laddha , Om J Omer , Sreenivas Subramoney

We propose an interactive approach for 3D instance segmentation, where users can iteratively collaborate with a deep learning model to segment objects in a 3D point cloud directly. Current methods for 3D instance segmentation are generally…

Computer Vision and Pattern Recognition · Computer Science 2023-01-24 Theodora Kontogianni , Ekin Celikkan , Siyu Tang , Konrad Schindler

This paper aims to achieve the segmentation of any 3D part in a scene based on natural language descriptions, extending beyond traditional object-level 3D scene understanding and addressing both data and methodological challenges. Due to…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Hongyu Wu , Pengwan Yang , Yuki M. Asano , Cees G. M. Snoek

One of the main obstacles to 3D semantic segmentation is the significant amount of endeavor required to generate expensive point-wise annotations for fully supervised training. To alleviate manual efforts, we propose GIDSeg, a novel…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Peng Yin , Lingyun Xu , Jianmin Ji , Sebastian Scherer , Howie Choset

Shape-Text matching is an important task of high-level shape understanding. Current methods mainly represent a 3D shape as multiple 2D rendered views, which obviously can not be understood well due to the structural ambiguity caused by…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Chuan Tang , Xi Yang , Bojian Wu , Zhizhong Han , Yi Chang

We introduce ASIA (Adaptive 3D Segmentation using few Image Annotations), a novel framework that enables segmentation of possibly non-semantic and non-text-describable "parts" in 3D. Our segmentation is controllable through a few…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Sai Raj Kishore Perla , Aditya Vora , Sauradip Nag , Ali Mahdavi-Amiri , Hao Zhang

Semantic annotations are vital for training models for object recognition, semantic segmentation or scene understanding. Unfortunately, pixelwise annotation of images at very large scale is labor-intensive and only little labeled data is…

Computer Vision and Pattern Recognition · Computer Science 2016-04-13 Jun Xie , Martin Kiefel , Ming-Ting Sun , Andreas Geiger

Pixel-wise clean annotation is necessary for fully-supervised semantic segmentation, which is laborious and expensive to obtain. In this paper, we propose a weakly supervised 2D semantic segmentation model by incorporating sparse bounding…

Computer Vision and Pattern Recognition · Computer Science 2020-12-02 Weixuan Sun , Jing Zhang , Nick Barnes

Semantic segmentation of 3D LiDAR point clouds, essential for autonomous driving and infrastructure management, is best achieved by supervised learning, which demands extensive annotated datasets and faces the problem of domain shifts. We…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Andrew Caunes , Thierry Chateau , Vincent Frémont

In the past few years we have seen great advances in object perception (particularly in 4D space-time dimensions) thanks to deep learning methods. However, they typically rely on large amounts of high-quality labels to achieve good…

Computer Vision and Pattern Recognition · Computer Science 2021-03-15 Bin Yang , Min Bai , Ming Liang , Wenyuan Zeng , Raquel Urtasun

Medical image segmentation typically necessitates a large and precisely annotated dataset. However, obtaining pixel-wise annotation is a labor-intensive task that requires significant effort from domain experts, making it challenging to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Heng Cai , Lei Qi , Qian Yu , Yinghuan Shi , Yang Gao

Existing 3D semantic segmentation methods rely on point-wise or voxel-wise feature descriptors to output segmentation predictions. However, these descriptors are often supervised at point or voxel level, leading to segmentation models that…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Bo Sun , Qixing Huang , Xiangru Huang

Part segmentations provide a rich and detailed part-level description of objects. However, their annotation requires an enormous amount of work, which makes it difficult to apply standard deep learning methods. In this paper, we propose the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Qing Liu , Adam Kortylewski , Zhishuai Zhang , Zizhang Li , Mengqi Guo , Qihao Liu , Xiaoding Yuan , Jiteng Mu , Weichao Qiu , Alan Yuille

A large-scale dataset is essential for learning good features in 3D shape understanding, but there are only a few datasets that can satisfy deep learning training. One of the major reasons is that current tools for annotating per-point…

Computer Vision and Pattern Recognition · Computer Science 2021-12-28 Sucheng Qian , Liu Liu , Wenqiang Xu , Cewu Lu

3D object reconstruction and multilevel segmentation are fundamental to computer vision research. Existing algorithms usually perform 3D scene reconstruction and target objects segmentation independently, and the performance is not fully…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Jiexiong Xu , Weikun Zhao , Zhiyan Tang , Xiangchao Gan

The problem of segmenting a given image into coherent regions is important in Computer Vision and many industrial applications require segmenting a known object into its components. Examples include identifying individual parts of a…

Computer Vision and Pattern Recognition · Computer Science 2013-05-17 Srimal Jayawardena , Di Yang , Marcus Hutter
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