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Modern 3D semantic instance segmentation approaches predominantly rely on specialized voting mechanisms followed by carefully designed geometric clustering techniques. Building on the successes of recent Transformer-based methods for object…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Jonas Schult , Francis Engelmann , Alexander Hermans , Or Litany , Siyu Tang , Bastian Leibe

In current interactive instance segmentation works, the user is granted a free hand when providing clicks to segment an object; clicks are allowed on background pixels and other object instances far from the target object. This form of…

Computer Vision and Pattern Recognition · Computer Science 2020-10-21 Soumajit Majumder , Angela Yao

The perception of moving objects is crucial for autonomous robots performing collision avoidance in dynamic environments. LiDARs and cameras tremendously enhance scene interpretation but do not provide direct motion information and face…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Matthias Zeller , Vardeep S. Sandhu , Benedikt Mersch , Jens Behley , Michael Heidingsfeld , Cyrill Stachniss

Recognizing 3D part instances from a 3D point cloud is crucial for 3D structure and scene understanding. Several learning-based approaches use semantic segmentation and instance center prediction as training tasks and fail to further…

Computer Vision and Pattern Recognition · Computer Science 2022-08-10 Chunyu Sun , Xin Tong , Yang Liu

During interactive segmentation, a model and a user work together to delineate objects of interest in a 3D point cloud. In an iterative process, the model assigns each data point to an object (or the background), while the user corrects…

Computer Vision and Pattern Recognition · Computer Science 2024-04-11 Yuanwen Yue , Sabarinath Mahadevan , Jonas Schult , Francis Engelmann , Bastian Leibe , Konrad Schindler , Theodora Kontogianni

The current state-of-the-art methods in 3D instance segmentation typically involve a clustering step, despite the tendency towards heuristics, greedy algorithms, and a lack of robustness to the changes in data statistics. In contrast, we…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Tong He , Wei Yin , Chunhua Shen , Anton van den Hengel

The goal of interactive segmentation is to assist users in producing segmentation masks as fast and as accurately as possible. Interactions have to be simple and intuitive and the number of interactions required to produce a satisfactory…

Computer Vision and Pattern Recognition · Computer Science 2021-09-17 Camille Dupont , Yanis Ouakrim , Quoc Cuong Pham

Instance segmentation is a challenging task aiming at classifying and segmenting all object instances of specific classes. While two-stage box-based methods achieve top performances in the image domain, they cannot easily extend their…

Computer Vision and Pattern Recognition · Computer Science 2021-10-22 Xiang Li , Jinglu Wang , Xiao Li , Yan Lu

LiDAR panoptic segmentation, which jointly performs instance and semantic segmentation for things and stuff classes, plays a fundamental role in LiDAR perception tasks. While most existing methods explicitly separate these two segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Yu Yang , Jianbiao Mei , Liang Liu , Siliang Du , Yilin Xiao , Jongwon Ra , Yong Liu , Xiao Xu , Huifeng Wu

Recent transformer-based offline video instance segmentation (VIS) approaches achieve encouraging results and significantly outperform online approaches. However, their reliance on the whole video and the immense computational complexity…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Rajat Koner , Tanveer Hannan , Suprosanna Shit , Sahand Sharifzadeh , Matthias Schubert , Thomas Seidl , Volker Tresp

Instance search is an interesting task as well as a challenging issue due to the lack of effective feature representation. In this paper, an instance level feature representation built upon fully convolutional instance-aware segmentation is…

Computer Vision and Pattern Recognition · Computer Science 2019-05-10 Yu Zhan , Wan-Lei Zhao

Most existing point cloud instance and semantic segmentation methods rely heavily on strong supervision signals, which require point-level labels for every point in the scene. However, such strong supervision suffers from large annotation…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 An Tao , Yueqi Duan , Yi Wei , Jiwen Lu , Jie Zhou

Two-stage and query-based instance segmentation methods have achieved remarkable results. However, their segmented masks are still very coarse. In this paper, we present Mask Transfiner for high-quality and efficient instance segmentation.…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Lei Ke , Martin Danelljan , Xia Li , Yu-Wing Tai , Chi-Keung Tang , Fisher Yu

DEtection TRansformer (DETR) started a trend that uses a group of learnable queries for unified visual perception. This work begins by applying this appealing paradigm to LiDAR-based point cloud segmentation and obtains a simple yet…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Zeqi Xiao , Wenwei Zhang , Tai Wang , Chen Change Loy , Dahua Lin , Jiangmiao Pang

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

Despite significant progress in 3D point cloud segmentation, existing methods primarily address specific tasks and depend on explicit instructions to identify targets, lacking the capability to infer and understand implicit user intentions…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Shuting He , Henghui Ding , Xudong Jiang , Bihan Wen

Instance segmentation is the problem of detecting and delineating each distinct object of interest appearing in an image. Current instance segmentation approaches consist of ensembles of modules that are trained independently of each other,…

Computer Vision and Pattern Recognition · Computer Science 2016-10-26 Bernardino Romera-Paredes , Philip H. S. Torr

Instance segmentation of point clouds is a crucial task in 3D field with numerous applications that involve localizing and segmenting objects in a scene. However, achieving satisfactory results requires a large number of manual annotations,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Zhikai Zhang , Jian Ding , Li Jiang , Dengxin Dai , Gui-Song Xia

3D point cloud segmentation has a wide range of applications in areas such as autonomous driving, augmented reality, virtual reality and digital twins. The point cloud data collected in real scenes often contain small objects and categories…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Chade Li , Pengju Zhang , Jiaming Zhang , Yihong Wu

3D instance segmentation aims to predict a set of object instances in a scene, representing them as binary foreground masks with corresponding semantic labels. Currently, transformer-based methods are gaining increasing attention due to…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Jiahao Lu , Jiacheng Deng