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Capsule networks (CapsNets) are new neural networks that classify images based on the spatial relationships of features. By analyzing the pose of features and their relative positions, it is more capable to recognize images after affine…

Computer Vision and Pattern Recognition · Computer Science 2022-03-02 Jiazhu Dai , Siwei Xiong

Objects are composed of a set of geometrically organized parts. We introduce an unsupervised capsule autoencoder (SCAE), which explicitly uses geometric relationships between parts to reason about objects. Since these relationships do not…

Machine Learning · Statistics 2019-12-03 Adam R. Kosiorek , Sara Sabour , Yee Whye Teh , Geoffrey E. Hinton

We propose Masked Capsule Autoencoders (MCAE), the first Capsule Network that utilises pretraining in a modern self-supervised paradigm, specifically the masked image modelling framework. Capsule Networks have emerged as a powerful…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Miles Everett , Mingjun Zhong , Georgios Leontidis

Capsule networks (see e.g. Hinton et al., 2018) aim to encode knowledge and reason about the relationship between an object and its parts. In this paper we specify a \emph{generative} model for such data, and derive a variational algorithm…

Machine Learning · Computer Science 2022-03-16 Alfredo Nazabal , Nikolaos Tsagkas , Christopher K. I. Williams

Capsule networks (see e.g. Hinton et al., 2018) aim to encode knowledge of and reason about the relationship between an object and its parts. In this paper we specify a generative model for such data, and derive a variational algorithm for…

Machine Learning · Computer Science 2023-03-29 Alfredo Nazabal , Nikolaos Tsagkas , Christopher K. I. Williams

Capsule Networks preserve the hierarchical spatial relationships between objects, and thereby bears a potential to surpass the performance of traditional Convolutional Neural Networks (CNNs) in performing tasks like image classification. A…

Machine Learning · Computer Science 2019-05-27 Alberto Marchisio , Giorgio Nanfa , Faiq Khalid , Muhammad Abdullah Hanif , Maurizio Martina , Muhammad Shafique

Adversarial examples raise questions about whether neural network models are sensitive to the same visual features as humans. In this paper, we first detect adversarial examples or otherwise corrupted images based on a class-conditional…

Machine Learning · Computer Science 2020-02-19 Yao Qin , Nicholas Frosst , Sara Sabour , Colin Raffel , Garrison Cottrell , Geoffrey Hinton

Deep neural networks are known to be vulnerable to adversarial attacks. This exposes them to potential exploits in security-sensitive applications and highlights their lack of robustness. This paper uses a variational auto-encoder (VAE) to…

Computer Vision and Pattern Recognition · Computer Science 2018-12-10 Yi Luo , Henry Pfister

Stacked Auto-Encoder (SAE) is a kind of deep learning algorithm for unsupervised learning. Which has multi layers that project the vector representation of input data into a lower vector space. These projection vectors are dense…

Computer Vision and Pattern Recognition · Computer Science 2016-10-11 Fei Hu , Changjiu Pu , Haowei Gao , Mengzi Tang , Li Li

In open set recognition, a classifier has to detect unknown classes that are not known at training time. In order to recognize new categories, the classifier has to project the input samples of known classes in very compact and separated…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Yunrui Guo , Guglielmo Camporese , Wenjing Yang , Alessandro Sperduti , Lamberto Ballan

The revolution in computer hardware, especially in graphics processing units and tensor processing units, has enabled significant advances in computer graphics and artificial intelligence algorithms. In addition to their many beneficial…

Computer Vision and Pattern Recognition · Computer Science 2019-10-30 Huy H. Nguyen , Junichi Yamagishi , Isao Echizen

Capsule networks are a neural network architecture specialized for visual scene recognition. Features and pose information are extracted from a scene and then dynamically routed through a hierarchy of vector-valued nodes called 'capsules'…

Neurons and Cognition · Quantitative Biology 2022-10-07 Alex B. Kiefer , Beren Millidge , Alexander Tschantz , Christopher L. Buckley

Capsule networks promise significant benefits over convolutional networks by storing stronger internal representations, and routing information based on the agreement between intermediate representations' projections. Despite this, their…

Computer Vision and Pattern Recognition · Computer Science 2024-07-30 Rodney Lalonde , Naji Khosravan , Ulas Bagci

Capsule networks are a recently proposed type of neural network shown to outperform alternatives in challenging shape recognition tasks. In capsule networks, scalar neurons are replaced with capsule vectors or matrices, whose entries…

Machine Learning · Computer Science 2019-12-04 Fabio De Sousa Ribeiro , Georgios Leontidis , Stefanos Kollias

We propose a novel architecture for object classification, called Self-Attention Capsule Networks (SACN). SACN is the first model that incorporates the Self-Attention mechanism as an integral layer within the Capsule Network (CapsNet).…

Computer Vision and Pattern Recognition · Computer Science 2019-11-20 Assaf Hoogi , Brian Wilcox , Yachee Gupta , Daniel L. Rubin

Standard Convolutional Neural Networks (CNNs) can be easily fooled by images with small quasi-imperceptible artificial perturbations. As alternatives to CNNs, the recently proposed Capsule Networks (CapsNets) are shown to be more robust to…

Computer Vision and Pattern Recognition · Computer Science 2021-02-22 Jindong Gu , Baoyuan Wu , Volker Tresp

Learning invariant representations has been the long-standing approach to self-supervised learning. However, recently progress has been made in preserving equivariant properties in representations, yet do so with highly prescribed…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Miles Everett , Aiden Durrant , Mingjun Zhong , Georgios Leontidis

The task of human pose estimation (HPE) deals with the ill-posed problem of estimating the 3D position of human joints directly from images and videos. In recent literature, most of the works tackle the problem mostly by using convolutional…

Computer Vision and Pattern Recognition · Computer Science 2023-02-14 Nicola Garau , Nicola Conci

Convolutional neural networks (CNNs) have become a key asset to most of fields in AI. Despite their successful performance, CNNs suffer from a major drawback. They fail to capture the hierarchy of spatial relation among different parts of…

Computer Vision and Pattern Recognition · Computer Science 2020-02-10 Marzieh Edraki , Nazanin Rahnavard , Mubarak Shah

With the rapid advancement and increased use of deep learning models in image identification, security becomes a major concern to their deployment in safety-critical systems. Since the accuracy and robustness of deep learning models are…

Machine Learning · Computer Science 2021-12-10 Dvij Kalaria , Aritra Hazra , Partha Pratim Chakrabarti
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