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Instance segmentation is a fundamental vision task that aims to recognize and segment each object in an image. However, it requires costly annotations such as bounding boxes and segmentation masks for learning. In this work, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-26 Xinlong Wang , Zhiding Yu , Shalini De Mello , Jan Kautz , Anima Anandkumar , Chunhua Shen , Jose M. Alvarez

Recently, progress in acquisition equipment such as LiDAR sensors has enabled sensing increasingly spacious outdoor 3D environments. Making sense of such 3D acquisitions requires fine-grained scene understanding, such as constructing…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Cedric Perauer , Laurenz Adrian Heidrich , Haifan Zhang , Matthias Nießner , Anastasiia Kornilova , Alexey Artemov

State-of-the-art instance-aware semantic segmentation algorithms use axis-aligned bounding boxes as an intermediate processing step to infer the final instance mask output. This often leads to coarse and inaccurate mask proposals due to the…

Computer Vision and Pattern Recognition · Computer Science 2020-03-16 Patrick Follmann , Rebecca König

In recent years, deep learning (DL) methods have become powerful tools for biomedical image segmentation. However, high annotation efforts and costs are commonly needed to acquire sufficient biomedical training data for DL models. To…

Computer Vision and Pattern Recognition · Computer Science 2018-06-05 Lin Yang , Yizhe Zhang , Zhuo Zhao , Hao Zheng , Peixian Liang , Michael T. C. Ying , Anil T. Ahuja , Danny Z. Chen

Instance segmentation is an advanced form of image segmentation which, beyond traditional segmentation, requires identifying individual instances of repeating objects in a scene. Mask R-CNN is the most common architecture for instance…

Computer Vision and Pattern Recognition · Computer Science 2024-08-01 Jawad Haidar , Marc Mouawad , Imad Elhajj , Daniel Asmar

Collecting image annotations remains a significant burden when deploying CNN in a specific applicative context. This is especially the case when the annotation consists in binary masks covering object instances. Our work proposes to…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Niels Sayez , Christophe De Vleeschouwer

In this work, we tackle the problem of instance segmentation, the task of simultaneously solving object detection and semantic segmentation. Towards this goal, we present a model, called MaskLab, which produces three outputs: box detection,…

Computer Vision and Pattern Recognition · Computer Science 2017-12-14 Liang-Chieh Chen , Alexander Hermans , George Papandreou , Florian Schroff , Peng Wang , Hartwig Adam

Open-vocabulary instance segmentation aims at segmenting novel classes without mask annotations. It is an important step toward reducing laborious human supervision. Most existing works first pretrain a model on captioned images covering…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Dat Huynh , Jason Kuen , Zhe Lin , Jiuxiang Gu , Ehsan Elhamifar

Pixel-wise annotations are notoriously labourious and costly to obtain in the medical domain. To mitigate this burden, weakly supervised approaches based on bounding box annotations-much easier to acquire-offer a practical alternative.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 Mélanie Gaillochet , Mehrdad Noori , Sahar Dastani , Christian Desrosiers , Hervé Lombaert

Instance segmentation is essential for applications such as automated monitoring of plant health, growth, and yield. However, extensive effort is required to create large-scale datasets with pixel-level annotations of each object instance…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Keyhan Najafian , Farhad Maleki , Lingling Jin , Ian Stavness

Semantic labelling and instance segmentation are two tasks that require particularly costly annotations. Starting from weak supervision in the form of bounding box detection annotations, we propose a new approach that does not require…

Computer Vision and Pattern Recognition · Computer Science 2016-11-24 Anna Khoreva , Rodrigo Benenson , Jan Hosang , Matthias Hein , Bernt Schiele

In this paper, we propose a conceptually novel, efficient, and fully convolutional framework for real-time instance segmentation. Previously, most instance segmentation methods heavily rely on object detection and perform mask prediction…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Tianheng Cheng , Xinggang Wang , Shaoyu Chen , Wenqiang Zhang , Qian Zhang , Chang Huang , Zhaoxiang Zhang , Wenyu Liu

When pixel-level masks or partial annotations are not available for training neural networks for semantic segmentation, it is possible to use higher-level information in the form of bounding boxes, or image tags. In the imaging sciences,…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Bas Peters

The realm of Weakly Supervised Instance Segmentation (WSIS) under box supervision has garnered substantial attention, showcasing remarkable advancements in recent years. However, the limitations of box supervision become apparent in its…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Xinyi Yu , Ling Yan , Pengtao Jiang , Hao Chen , Bo Li , Lin Yuanbo Wu , Linlin Ou

In this work, we present a novel and effective framework to facilitate object detection with the instance-level segmentation information that is only supervised by bounding box annotation. Starting from the joint object detection and…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Xiangyun Zhao , Shuang Liang , Yichen Wei

3D instance segmentation is crucial for understanding complex 3D environments, yet fully supervised methods require dense point-level annotations, resulting in substantial annotation costs and labor overhead. To mitigate this, box-level…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Youngju Yoo , Seho Kim , Changick Kim

Instance segmentation aims to detect and segment individual objects in a scene. Most existing methods rely on precise mask annotations of every category. However, it is difficult and costly to segment objects in novel categories because a…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Weicheng Kuo , Anelia Angelova , Jitendra Malik , Tsung-Yi Lin

Instance segmentation is an active topic in computer vision that is usually solved by using supervised learning approaches over very large datasets composed of object level masks. Obtaining such a dataset for any new domain can be very…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Zhenzhen Weng , Mehmet Giray Ogut , Shai Limonchik , Serena Yeung

To date, instance segmentation is dominated by twostage methods, as pioneered by Mask R-CNN. In contrast, one-stage alternatives cannot compete with Mask R-CNN in mask AP, mainly due to the difficulty of compactly representing masks, making…

Computer Vision and Pattern Recognition · Computer Science 2020-05-07 Rufeng Zhang , Zhi Tian , Chunhua Shen , Mingyu You , Youliang Yan

Boundary-based instance segmentation has drawn much attention since of its attractive efficiency. However, existing methods suffer from the difficulty in long-distance regression. In this paper, we propose a coarse-to-fine module to address…

Computer Vision and Pattern Recognition · Computer Science 2021-06-21 Feng Luo , Bin-Bin Gao , Jiangpeng Yan , Xiu Li