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In recent years self-supervised learning has emerged as a promising candidate for unsupervised representation learning. In the visual domain its applications are mostly studied in the context of images of natural scenes. However, its…

计算机视觉与模式识别 · 计算机科学 2021-06-04 Vladan Stojnić , Vladimir Risojević

Learning meaningful representations is at the heart of many tasks in the field of modern machine learning. Recently, a lot of methods were introduced that allow learning of image representations without supervision. These representations…

Subspace clustering and feature extraction are two of the most commonly used unsupervised learning techniques in computer vision and pattern recognition. State-of-the-art techniques for subspace clustering make use of recent advances in…

计算机视觉与模式识别 · 计算机科学 2012-04-18 Risheng Liu , Zhouchen Lin , Fernando De la Torre , Zhixun Su

We present an approach for unsupervised training of CNNs in order to learn discriminative face representations. We mine supervised training data by noting that multiple faces in the same video frame must belong to different persons and the…

计算机视觉与模式识别 · 计算机科学 2018-03-06 Samyak Datta , Gaurav Sharma , C. V. Jawahar

Unsupervised image segmentation aims at assigning the pixels with similar feature into a same cluster without annotation, which is an important task in computer vision. Due to lack of prior knowledge, most of existing model usually need to…

计算机视觉与模式识别 · 计算机科学 2020-12-17 Zhichao Wu , Lei Guo , Hao Zhang , Dan Xu

Low-shot learning indicates the ability to recognize unseen objects based on very limited labeled training samples, which simulates human visual intelligence. According to this concept, we propose a multi-level similarity model (MLSM) to…

计算机视觉与模式识别 · 计算机科学 2019-12-16 Hongwei Xv , Xin Sun , Junyu Dong , Shu Zhang , Qiong Li

A restricted Boltzmann machine (RBM) is an undirected graphical model constructed for discrete or continuous random variables, with two layers, one hidden and one visible, and no conditional dependency within a layer. In recent years, RBMs…

机器学习 · 统计学 2019-09-12 Andee Kaplan , Daniel Nordman , Stephen Vardeman

The recently advanced unsupervised learning approaches use the siamese-like framework to compare two "views" from the same image for learning representations. Making the two views distinctive is a core to guarantee that unsupervised methods…

计算机视觉与模式识别 · 计算机科学 2022-02-18 Zhiqiang Shen , Zechun Liu , Zhuang Liu , Marios Savvides , Trevor Darrell , Eric Xing

Recent semi-supervised learning methods have shown to achieve comparable results to their supervised counterparts while using only a small portion of labels in image classification tasks thanks to their regularization strategies. In this…

机器学习 · 计算机科学 2020-09-25 Wei-Hong Li , Chuan-Sheng Foo , Hakan Bilen

Unsupervised localization and segmentation are long-standing computer vision challenges that involve decomposing an image into semantically-meaningful segments without any labeled data. These tasks are particularly interesting in an…

计算机视觉与模式识别 · 计算机科学 2022-05-17 Luke Melas-Kyriazi , Christian Rupprecht , Iro Laina , Andrea Vedaldi

Progress in self-supervised learning has brought strong general image representation learning methods. Yet so far, it has mostly focused on image-level learning. In turn, tasks such as unsupervised image segmentation have not benefited from…

计算机视觉与模式识别 · 计算机科学 2022-06-22 Adrian Ziegler , Yuki M. Asano

Many computer vision applications involve modeling complex spatio-temporal patterns in high-dimensional motion data. Recently, restricted Boltzmann machines (RBMs) have been widely used to capture and represent spatial patterns in a single…

计算机视觉与模式识别 · 计算机科学 2017-10-24 Siqi Nie , Ziheng Wang , Qiang Ji

Recently, cross domain transfer has been applied for unsupervised image restoration tasks. However, directly applying existing frameworks would lead to domain-shift problems in translated images due to lack of effective supervision.…

计算机视觉与模式识别 · 计算机科学 2020-03-31 Wenchao Du , Hu Chen , Hongyu Yang

Automatic detecting anomalous regions in images of objects or textures without priors of the anomalies is challenging, especially when the anomalies appear in very small areas of the images, making difficult-to-detect visual variations,…

计算机视觉与模式识别 · 计算机科学 2022-07-05 Jie Yang , Yong Shi , Zhiquan Qi

We present a new method to learn video representations from large-scale unlabeled video data. Ideally, this representation will be generic and transferable, directly usable for new tasks such as action recognition and zero or few-shot…

计算机视觉与模式识别 · 计算机科学 2020-02-28 AJ Piergiovanni , Anelia Angelova , Michael S. Ryoo

This paper describes a new form of unsupervised learning, whose input is a set of unlabeled points that are assumed to be local maxima of an unknown value function v in an unknown subset of the vector space. Two functions are learned: (i) a…

机器学习 · 计算机科学 2020-01-16 Lior Wolf , Sagie Benaim , Tomer Galanti

Unsupervised visual representation learning remains a largely unsolved problem in computer vision research. Among a big body of recently proposed approaches for unsupervised learning of visual representations, a class of self-supervised…

计算机视觉与模式识别 · 计算机科学 2019-01-28 Alexander Kolesnikov , Xiaohua Zhai , Lucas Beyer

Unsupervised representation learning aims at finding methods that learn representations from data without annotation-based signals. Abstaining from annotations not only leads to economic benefits but may - and to some extent already does -…

计算机视觉与模式识别 · 计算机科学 2023-12-04 Bonifaz Stuhr

The goal of this paper is to discover a set of discriminative patches which can serve as a fully unsupervised mid-level visual representation. The desired patches need to satisfy two requirements: 1) to be representative, they need to occur…

计算机视觉与模式识别 · 计算机科学 2012-08-21 Saurabh Singh , Abhinav Gupta , Alexei A. Efros

Recently, self-supervised learning has attracted attention due to its remarkable ability to acquire meaningful representations for classification tasks without using semantic labels. This paper introduces a self-supervised learning…

计算机视觉与模式识别 · 计算机科学 2022-02-09 Hyungtae Lee , Heesung Kwon