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Learning-based 3D shape segmentation is usually formulated as a semantic labeling problem, assuming that all parts of training shapes are annotated with a given set of tags. This assumption, however, is impractical for learning fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2022-01-14 Xiaogang Wang , Xun Sun , Xinyu Cao , Kai Xu , Bin Zhou

In the recent years, the research community has witnessed growing use of 3D point cloud data for the high applicability in various real-world applications. By means of 3D point cloud, this modality enables to consider the actual size and…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Daichi Otsuka , Shinichi Mae , Ryosuke Yamada , Hirokatsu Kataoka

In the field of 3D scene understanding, 3D scene graphs have emerged as a new scene representation that combines geometric and semantic information about objects and their relationships. However, learning semantic 3D scene graphs in a fully…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Sebastian Koch , Pedro Hermosilla , Narunas Vaskevicius , Mirco Colosi , Timo Ropinski

Biomedical image segmentation plays a significant role in computer-aided diagnosis. However, existing CNN based methods rely heavily on massive manual annotations, which are very expensive and require huge human resources. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2023-01-13 Ruifei Zhang , Sishuo Liu , Yizhou Yu , Guanbin Li

Segmentation of organs or lesions from medical images plays an essential role in many clinical applications such as diagnosis and treatment planning. Though Convolutional Neural Networks (CNN) have achieved the state-of-the-art performance…

Computer Vision and Pattern Recognition · Computer Science 2021-05-27 Xiangde Luo , Guotai Wang , Tao Song , Jingyang Zhang , Michael Aertsen , Jan Deprest , Sebastien Ourselin , Tom Vercauteren , Shaoting Zhang

We show that it is possible to learn semantic segmentation from very limited amounts of manual annotations, by enforcing geometric 3D constraints between multiple views. More exactly, image locations corresponding to the same physical 3D…

Computer Vision and Pattern Recognition · Computer Science 2019-01-10 Sinisa Stekovic , Friedrich Fraundorfer , Vincent Lepetit

We propose an Active Learning approach to training a segmentation classifier that exploits geometric priors to streamline the annotation process in 3D image volumes. To this end, we use these priors not only to select voxels most in need of…

Computer Vision and Pattern Recognition · Computer Science 2015-08-21 Ksenia Konyushkova , Raphael Sznitman , Pascal Fua

Semantic segmentation of 3D medical images is a challenging task due to the high variability of the shape and pattern of objects (such as organs or tumors). Given the recent success of deep learning in medical image segmentation, Neural…

Image and Video Processing · Electrical Eng. & Systems 2022-03-25 Cheng Peng , Andriy Myronenko , Ali Hatamizadeh , Vish Nath , Md Mahfuzur Rahman Siddiquee , Yufan He , Daguang Xu , Rama Chellappa , Dong Yang

Self-supervised learning has made substantial strides in image processing, while visual pre-training for autonomous driving is still in its infancy. Existing methods often focus on learning geometric scene information while neglecting…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Shaoqing Xu , Fang Li , Shengyin Jiang , Ziying Song , Li Liu , Zhi-xin Yang

The objective of this study was to develop a PET tumor-segmentation framework that addresses the challenges of limited spatial resolution, high image noise, and lack of clinical training data with ground-truth tumor boundaries in PET…

Current popular backbones in computer vision, such as Vision Transformers (ViT) and ResNets are trained to perceive the world from 2D images. However, to more effectively understand 3D structural priors in 2D backbones, we propose Mask3D to…

Computer Vision and Pattern Recognition · Computer Science 2023-03-01 Ji Hou , Xiaoliang Dai , Zijian He , Angela Dai , Matthias Nießner

Blood vessel segmentation is a core task in medical image analysis for the care of vascular diseases and surgical planning, yet the challenges of providing expert vascular annotations pose a major obstacle for the progress of related deep…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Erin Rainville , Melissa Ananian , Tristan Mirolla , Hassan Rivaz , Yiming Xiao

Despite significant progress in pixel-level medical image analysis, existing medical image segmentation models rarely explore medical segmentation and diagnosis tasks jointly. However, it is crucial for patients that models can provide…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Lingran Song , Yucheng Zhou , Jianbing Shen

Recently, automated medical image segmentation methods based on deep learning have achieved great success. However, they heavily rely on large annotated datasets, which are costly and time-consuming to acquire. Few-shot learning aims to…

Artificial Intelligence · Computer Science 2024-08-20 Jiayu Huo , Ruiqiang Xiao , Haotian Zheng , Yang Liu , Sebastien Ourselin , Rachel Sparks

Due to the computational complexity of 3D medical image segmentation, training with downsampled images is a common remedy for out-of-memory errors in deep learning. Nevertheless, as standard spatial convolution is sensitive to variations in…

Image and Video Processing · Electrical Eng. & Systems 2023-10-09 Ken C. L. Wong , Hongzhi Wang , Tanveer Syeda-Mahmood

In this study, we implemented a two-stage deep learning-based approach to segment lesions in PET/CT images for the AutoPET III challenge. The first stage utilized a DynUNet model for coarse segmentation, identifying broad regions of…

Image and Video Processing · Electrical Eng. & Systems 2024-09-23 Reza Safdari , Mohammad Koohi-Moghaddam , Kyongtae Tyler Bae

We introduce SAM3D, a new approach to semi-automatic zero-shot segmentation of 3D images building on the existing Segment Anything Model. We achieve fast and accurate segmentations in 3D images with a four-step strategy involving: user…

Image and Video Processing · Electrical Eng. & Systems 2024-08-09 Trevor J. Chan , Aarush Sahni , Yijin Fang , Jie Li , Alisha Luthra , Alison Pouch , Chamith S. Rajapakse

Many deep learning based automated medical image segmentation systems, in reality, face difficulties in deployment due to the cost of massive data annotation and high latency in model iteration. We propose a dynamic interactive learning…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Mu Tian , Xiaohui Chen , Yi Gao

Automatic segmentation of medical images is a key step for diagnostic and interventional tasks. However, achieving this requires large amounts of annotated volumes, which can be tedious and time-consuming task for expert annotators. In this…

We propose an active learning approach to image segmentation that exploits geometric priors to speed up and streamline the annotation process. It can be applied for both background-foreground and multi-class segmentation tasks in 2D images…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Ksenia Konyushkova , Raphael Sznitman , Pascal Fua
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