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相关论文: The Domain Adaptation problem in photometric redsh…

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Unsupervised domain adaptation (UDA) is a challenging open problem in land cover mapping. Previous studies show encouraging progress in addressing cross-domain distribution shifts on remote sensing benchmarks for land cover mapping. The…

计算机视觉与模式识别 · 计算机科学 2024-04-24 Clifford Broni-Bediako , Junshi Xia , Naoto Yokoya

Wide field images taken in several photometric bands allow simultaneous measurement of redshifts for thousands of galaxies. A variety of algorithms to make this measurement have appeared in the last few years, the majority of which can be…

宇宙学与河外天体物理 · 物理学 2016-05-11 Juan De Vicente , Eusebio Sánchez , Ignacio Sevilla

Convolutional neural networks (CNNs) have led to significant improvements in the semantic segmentation of images. When source and target datasets come from different modalities, CNN performance suffers due to domain shift. In such cases…

计算机视觉与模式识别 · 计算机科学 2022-10-10 Serban Stan , Mohammad Rostami

We present and compare in this paper new photometric redshift catalogs of the galaxies in three public fields: the NTT Deep Field, the HDF-N and the HDF-S. Photometric redshifts have been obtained for thewhole sample, by adopting a $\chi^2$…

天体物理学 · 物理学 2009-10-31 A. Fontana , S. D'Odorico , F. Poli , E. Giallongo , S. Arnouts , S. Cristiani , A. Moorwood , P. Saracco

Human skin detection in images is a widely studied topic of Computer Vision for which it is commonly accepted that analysis of pixel color or local patches may suffice. This is because skin regions appear to be relatively uniform and many…

计算机视觉与模式识别 · 计算机科学 2020-03-31 Aloisio Dourado , Frederico Guth , Teofilo Emidio de Campos , Li Weigang

Land use and land cover mapping are essential to various fields of study, including forestry, agriculture, and urban management. Using earth observation satellites both facilitate and accelerate the task. Lately, deep learning methods have…

计算机视觉与模式识别 · 计算机科学 2020-04-02 Nadir Bengana , Janne Heikkilä

Currently, the divergence in distributions of design and operational data, and large computational complexity are limiting factors in the adoption of CNNs in real-world applications. For instance, person re-identification systems typically…

机器学习 · 计算机科学 2020-05-19 Le Thanh Nguyen-Meidine , Eric Granger , Madhu Kiran , Jose Dolz , Louis-Antoine Blais-Morin

We present a technique for the estimation of photometric redshifts based on feed-forward neural networks. The Multilayer Perceptron (MLP) Artificial Neural Network is used to predict photometric redshifts in the HDF-S from an ultra deep…

Deep learning models have been shown to outperform methods that rely on summary statistics, like the power spectrum, in extracting information from complex cosmological data sets. However, due to differences in the subgrid physics…

宇宙学与河外天体物理 · 物理学 2024-04-16 Andrea Roncoli , Aleksandra Ćiprijanović , Maggie Voetberg , Francisco Villaescusa-Navarro , Brian Nord

Beyond the complexity of CNNs that require training on large annotated datasets, the domain shift between design and operational data has limited the adoption of CNNs in many real-world applications. For instance, in person…

计算机视觉与模式识别 · 计算机科学 2021-01-20 Le Thanh Nguyen-Meidine , Atif Belal , Madhu Kiran , Jose Dolz , Louis-Antoine Blais-Morin , Eric Granger

Despite their success in many computer vision tasks, convolutional networks tend to require large amounts of labeled data to achieve generalization. Furthermore, the performance is not guaranteed on a sample from an unseen domain at test…

计算机视觉与模式识别 · 计算机科学 2019-09-09 Ozan Ciga , Jianan Chen , Anne Martel

We present -- and make publicly available -- accurate and precise photometric redshifts in the ACS footprint from the COSMOS field for objects with $i_{\mathrm{AB}}\leq 23$. The redshifts are computed using a combination of narrow band…

Using the deep fields of COSMOS, FDF, HUDF, and HDF-N as an example, we discuss the prospects for and limitations on the method for searching for super large structures in the spatial distribution of galaxies proposed in the preceding…

宇宙学与河外天体物理 · 物理学 2015-05-18 Nikita Nabokov , Yuri Baryshev

Learning deep neural networks that are generalizable across different domains remains a challenge due to the problem of domain shift. Unsupervised domain adaptation is a promising avenue which transfers knowledge from a source domain to a…

机器学习 · 计算机科学 2020-08-20 Qingjie Meng , Daniel Rueckert , Bernhard Kainz

Land cover maps are a pivotal element in a wide range of Earth Observation (EO) applications. However, annotating large datasets to develop supervised systems for remote sensing (RS) semantic segmentation is costly and time-consuming.…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Valerio Marsocci , Nicolas Gonthier , Anatol Garioud , Simone Scardapane , Clément Mallet

Change detection (CD) is one of the most vital applications in remote sensing. Recently, deep learning has achieved promising performance in the CD task. However, the deep models are task-specific and CD data set bias often exists, hence it…

计算机视觉与模式识别 · 计算机科学 2020-06-17 Hongruixuan Chen , Chen Wu , Bo Du , Liangpei Zhang

Semantic segmentation, a pixel-level vision task, is developed rapidly by using convolutional neural networks (CNNs). Training CNNs requires a large amount of labeled data, but manually annotating data is difficult. For emancipating…

计算机视觉与模式识别 · 计算机科学 2019-04-22 Qi Wang , Junyu Gao , Xuelong Li

During the last half decade, convolutional neural networks (CNNs) have triumphed over semantic segmentation, which is one of the core tasks in many applications such as autonomous driving and augmented reality. However, to train CNNs…

计算机视觉与模式识别 · 计算机科学 2019-01-11 Yang Zhang , Philip David , Hassan Foroosh , Boqing Gong

Domain adaptation aims to leverage a labeled source domain to learn a classifier for the unlabeled target domain with a different distribution. Previous methods mostly match the distribution between two domains by global or class alignment.…

计算机视觉与模式识别 · 计算机科学 2022-05-30 Mei Wang , Weihong Deng

Unsupervised domain adaptation (UDA) has shown remarkable results in bearing fault diagnosis under changing working conditions in recent years. However, most UDA methods do not consider the geometric structure of the data. Furthermore, the…

系统与控制 · 电气工程与系统科学 2021-12-14 Mohammadreza Ghorvei , Mohammadreza Kavianpour , Mohammad TH Beheshti , Amin Ramezani