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Mitochondria segmentation in electron microscopy images is essential in neuroscience. However, due to the image degradation during the imaging process, the large variety of mitochondrial structures, as well as the presence of noise,…

Computer Vision and Pattern Recognition · Computer Science 2021-09-28 Zhili Li , Xuejin Chen , Jie Zhao , Zhiwei Xiong

We present Rewis3d, a framework that leverages recent advances in feed-forward 3D reconstruction to significantly improve weakly supervised semantic segmentation on 2D images. Obtaining dense, pixel-level annotations remains a costly…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Jonas Ernst , Wolfgang Boettcher , Lukas Hoyer , Jan Eric Lenssen , Bernt Schiele

To alleviate the cost of collecting and annotating large-scale point cloud datasets, we propose an unsupervised learning approach to learn features from unlabeled point cloud "3D object" dataset by using part contrasting and object…

Computer Vision and Pattern Recognition · Computer Science 2019-08-14 Ling Zhang , Zhigang Zhu

Arguably one of the top success stories of deep learning is transfer learning. The finding that pre-training a network on a rich source set (eg., ImageNet) can help boost performance once fine-tuned on a usually much smaller target set, has…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Saining Xie , Jiatao Gu , Demi Guo , Charles R. Qi , Leonidas J. Guibas , Or Litany

Large-scale datasets are important for the development of deep learning models. Such datasets usually require a heavy workload of annotations, which are extremely time-consuming and expensive. To accelerate the annotation procedure,…

Machine Learning · Computer Science 2024-03-13 Xiaoqian Ruan , Gaoang Wang

We present a new approach to instill 4D dynamic object priors into learned 3D representations by unsupervised pre-training. We observe that dynamic movement of an object through an environment provides important cues about its objectness,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Yujin Chen , Matthias Nießner , Angela Dai

Contrastive learning is a discriminative approach that aims at grouping similar samples closer and diverse samples far from each other. It it an efficient technique to train an encoder generating distinguishable and informative…

Computer Vision and Pattern Recognition · Computer Science 2021-07-19 Qing Chen , Jian Zhang

A crucial task in scene understanding is 3D object detection, which aims to detect and localize the 3D bounding boxes of objects belonging to specific classes. Existing 3D object detectors heavily rely on annotated 3D bounding boxes during…

Computer Vision and Pattern Recognition · Computer Science 2020-07-29 Zengyi Qin , Jinglu Wang , Yan Lu

Accurate segmentation of retinal fluids in 3D Optical Coherence Tomography images is key for diagnosis and personalized treatment of eye diseases. While deep learning has been successful at this task, trained supervised models often fail…

Computer Vision and Pattern Recognition · Computer Science 2022-08-05 Alvaro Gomariz , Huanxiang Lu , Yun Yvonna Li , Thomas Albrecht , Andreas Maunz , Fethallah Benmansour , Alessandra M. Valcarcel , Jennifer Luu , Daniela Ferrara , Orcun Goksel

Due to the lack of depth cues in images, multi-frame inputs are important for the success of vision-based perception, prediction, and planning in autonomous driving. Observations from different angles enable the recovery of 3D object states…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Yichen Xie , Hongge Chen , Gregory P. Meyer , Yong Jae Lee , Eric M. Wolff , Masayoshi Tomizuka , Wei Zhan , Yuning Chai , Xin Huang

Semantic segmentation in autonomous driving predominantly focuses on learning from large-scale data with a closed set of known classes without considering unknown objects. Motivated by safety reasons, we address the video class agnostic…

Computer Vision and Pattern Recognition · Computer Science 2021-05-12 Mennatullah Siam , Alex Kendall , Martin Jagersand

Rapid progress in 3D semantic segmentation is inseparable from the advances of deep network models, which highly rely on large-scale annotated data for training. To address the high cost and challenges of 3D point-level labeling, we present…

Computer Vision and Pattern Recognition · Computer Science 2021-10-18 Li Jiang , Shaoshuai Shi , Zhuotao Tian , Xin Lai , Shu Liu , Chi-Wing Fu , Jiaya Jia

The prior self-supervised learning researches mainly select image-level instance discrimination as pretext task. It achieves a fantastic classification performance that is comparable to supervised learning methods. However, with degraded…

Computer Vision and Pattern Recognition · Computer Science 2022-05-11 Bing Zhao , Jun Li , Hong Zhu

The goal of contrastive learning based pre-training is to leverage large quantities of unlabeled data to produce a model that can be readily adapted downstream. Current approaches revolve around solving an image discrimination task: given…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Chenhongyi Yang , Lichao Huang , Elliot J. Crowley

Chromosome recognition is an essential task in karyotyping, which plays a vital role in birth defect diagnosis and biomedical research. However, existing classification methods face significant challenges due to the inter-class similarity…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Ruijia Chang , Suncheng Xiang , Chengyu Zhou , Kui Su , Dahong Qian , Jun Wang

This paper proposes an adaptive auxiliary task learning based approach for object counting problems. Unlike existing auxiliary task learning based methods, we develop an attention-enhanced adaptively shared backbone network to enable both…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Yanda Meng , Joshua Bridge , Meng Wei , Yitian Zhao , Yihong Qiao , Xiaoyun Yang , Xiaowei Huang , Yalin Zheng

Few-shot point cloud 3D object detection (FS3D) aims to identify and localise objects of novel classes from point clouds, using knowledge learnt from annotated base classes and novel classes with very few annotations. Thus far, this…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 Xuejing Li , Weijia Zhang , Chao Ma

Current state-of-the-art object-centric models use slots and attention-based routing for binding. However, this class of models has several conceptual limitations: the number of slots is hardwired; all slots have equal capacity; training…

Machine Learning · Computer Science 2023-11-10 Aleksandar Stanić , Anand Gopalakrishnan , Kazuki Irie , Jürgen Schmidhuber

We introduce a novel approach to unsupervised and semi-supervised domain adaptation for semantic segmentation. Unlike many earlier methods that rely on adversarial learning for feature alignment, we leverage contrastive learning to bridge…

Computer Vision and Pattern Recognition · Computer Science 2021-04-23 Weizhe Liu , David Ferstl , Samuel Schulter , Lukas Zebedin , Pascal Fua , Christian Leistner

Weather data, comprising multiple variables, poses significant challenges due to its high dimensionality and multimodal nature. Creating low-dimensional embeddings requires compressing this data into a compact, shared latent space. This…

Machine Learning · Computer Science 2026-03-27 Nathan Bailey