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A major obstacle in instance segmentation is that existing methods often need many per-pixel labels in order to be effective. These labels require large human effort and for certain applications, such labels are not readily available. To…

Computer Vision and Pattern Recognition · Computer Science 2019-07-03 Issam H. Laradji , David Vazquez , Mark Schmidt

Semi-supervised learning relaxes the need of large pixel-wise labeled datasets for image segmentation by leveraging unlabeled data. A prominent way to exploit unlabeled data is to regularize model predictions. Since the predictions of…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Sukesh Adiga , Jose Dolz , Herve Lombaert

Pre-trained vision-language models learn massive data to model unified representations of images and natural languages, which can be widely applied to downstream machine learning tasks. In addition to zero-shot inference, in order to better…

Computer Vision and Pattern Recognition · Computer Science 2024-06-28 Qian-Wei Wang , Yuqiu Xie , Letian Zhang , Zimo Liu , Shu-Tao Xia

Few shot segmentation (FSS) aims to learn pixel-level classification of a target object in a query image using only a few annotated support samples. This is challenging as it requires modeling appearance variations of target objects and the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-19 Soopil Kim , Philip Chikontwe , Sang Hyun Park

Semantic segmentation is a challenging vision problem that usually necessitates the collection of large amounts of finely annotated data, which is often quite expensive to obtain. Coarsely annotated data provides an interesting alternative…

Computer Vision and Pattern Recognition · Computer Science 2018-08-03 Isay Katsman , Rohun Tripathi , Andreas Veit , Serge Belongie

Text segmentation is a challenging vision task with many downstream applications. Current text segmentation methods require pixel-level annotations, which are expensive in the cost of human labor and limited in application scenarios. In…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Xinyan Zu , Haiyang Yu , Bin Li , Xiangyang Xue

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

Supervised deep learning methods for segmentation require large amounts of labelled training data, without which they are prone to overfitting, not generalizing well to unseen images. In practice, obtaining a large number of annotations…

Computer Vision and Pattern Recognition · Computer Science 2019-03-01 Krishna Chaitanya , Neerav Karani , Christian Baumgartner , Olivio Donati , Anton Becker , Ender Konukoglu

Quality of deep convolutional neural network predictions strongly depends on the size of the training dataset and the quality of the annotations. Creating annotations, especially for 3D medical image segmentation, is time-consuming and…

Image and Video Processing · Electrical Eng. & Systems 2023-05-11 Matin Hosseinzadeh , Anindo Saha , Joeran Bosma , Henkjan Huisman

Pre-training a recognition model with contrastive learning on a large dataset of unlabeled data has shown great potential to boost the performance of a downstream task, e.g., image classification. However, in domains such as medical…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Jizong Peng , Ping Wang , Chrisitian Desrosiers , Marco Pedersoli

While semi-supervised learning (SSL) algorithms provide an efficient way to make use of both labelled and unlabelled data, they generally struggle when the number of annotated samples is very small. In this work, we consider the problem of…

Computer Vision and Pattern Recognition · Computer Science 2020-04-23 Sylvestre-Alvise Rebuffi , Sebastien Ehrhardt , Kai Han , Andrea Vedaldi , Andrew Zisserman

Semantic segmentation is an important technique for environment perception in intelligent transportation systems. With the rapid development of convolutional neural networks (CNNs), road scene analysis can usually achieve satisfactory…

Computer Vision and Pattern Recognition · Computer Science 2023-03-15 Licong Guan , Xue Yuan

In this paper, we aim to improve the performance of semantic image segmentation in a semi-supervised setting in which training is effectuated with a reduced set of annotated images and additional non-annotated images. We present a method…

Computer Vision and Pattern Recognition · Computer Science 2019-10-31 Jizong Peng , Guillermo Estrada , Marco Pedersoli , Christian Desrosiers

The crux of semi-supervised semantic segmentation is to assign adequate pseudo-labels to the pixels of unlabeled images. A common practice is to select the highly confident predictions as the pseudo ground-truth, but it leads to a problem…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Yuchao Wang , Haochen Wang , Yujun Shen , Jingjing Fei , Wei Li , Guoqiang Jin , Liwei Wu , Rui Zhao , Xinyi Le

Due to the few annotated labels of 3D point clouds, how to learn discriminative features of point clouds to segment object instances is a challenging problem. In this paper, we propose a simple yet effective 3D instance segmentation…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Linghua Tang , Le Hui , Jin Xie

Fully supervised deep neural networks for segmentation usually require a massive amount of pixel-level labels which are manually expensive to create. In this work, we develop a multi-task learning method to relax this constraint. We regard…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Rihuan Ke , Aurélie Bugeau , Nicolas Papadakis , Mark Kirkland , Peter Schuetz , Carola-Bibiane Schönlieb

We propose a novel semi-supervised image segmentation method that simultaneously optimizes a supervised segmentation and an unsupervised reconstruction objectives. The reconstruction objective uses an attention mechanism that separates the…

Computer Vision and Pattern Recognition · Computer Science 2019-07-30 Shuai Chen , Gerda Bortsova , Antonio Garcia-Uceda Juarez , Gijs van Tulder , Marleen de Bruijne

Training a neural network with a large labeled dataset is still a dominant paradigm in computational histopathology. However, obtaining such exhaustive manual annotations is often expensive, laborious, and prone to inter and Intra-observer…

Computer Vision and Pattern Recognition · Computer Science 2021-11-03 Chetan L. Srinidhi , Seung Wook Kim , Fu-Der Chen , Anne L. Martel

Manually annotating object segmentation masks is very time-consuming. While interactive segmentation methods offer a more efficient alternative, they become unaffordable at a large scale because the cost grows linearly with the number of…

Computer Vision and Pattern Recognition · Computer Science 2021-10-07 Dim P. Papadopoulos , Ethan Weber , Antonio Torralba

Foundational models such as the Segment Anything Model (SAM) are gaining traction in medical imaging segmentation, supporting multiple downstream tasks. However, such models are supervised in nature, still relying on large annotated…

Computer Vision and Pattern Recognition · Computer Science 2025-03-07 Aishik Konwer , Zhijian Yang , Erhan Bas , Cao Xiao , Prateek Prasanna , Parminder Bhatia , Taha Kass-Hout