Results 41 to 50 of about 6,752,036 (307)

A New Dictionary Construction Based Multimodal Medical Image Fusion Framework

open access: yesEntropy, 2019
Training a good dictionary is the key to a successful image fusion method of sparse representation based models. In this paper, we propose a novel dictionary learning scheme for medical image fusion.
Fuqiang Zhou   +4 more
doaj   +1 more source

Weakly Supervised Dictionary Learning

open access: yesIEEE Transactions on Signal Processing, 2018
We present a probabilistic modeling and inference framework for discriminative analysis dictionary learning under a weak supervision setting. Dictionary learning approaches have been widely used for tasks such as low-level signal denoising and restoration as well as high-level classification tasks, which can be applied to audio and image analysis ...
Zeyu You   +3 more
openaire   +4 more sources

Wasserstein Dictionary Learning: Optimal Transport-Based Unsupervised Nonlinear Dictionary Learning [PDF]

open access: yesSIAM Journal on Imaging Sciences, 2018
This paper introduces a new nonlinear dictionary learning method for histograms in the probability simplex. The method leverages optimal transport theory, in the sense that our aim is to reconstruct histograms using so-called displacement interpolations (a.k.a.
Schmitz, Morgan   +7 more
openaire   +4 more sources

On The Sample Complexity Of Sparse Dictionary Learning [PDF]

open access: yes, 2014
This work was partially supported Cluster of Excellence CoTeSys funded by the German DFG. This work was partially supported by the EU FP7, SMALL project, FET-Open grant number 225913International audienceIn the synthesis model signals are represented as ...
Gribonval, Rémi   +9 more
core   +1 more source

Single Image Super-Resolution Based on Deep Learning Features and Dictionary Model

open access: yesIEEE Access, 2017
In traditional single image super-resolution (SR) methods based on dictionary model, a large number of image features are needed to train the SR dictionary.
Liling Zhao, Quansen Sun, Zelin Zhang
doaj   +1 more source

A Novel Hyperspectral Endmember Extraction Algorithm Based on Online Robust Dictionary Learning

open access: yesRemote Sensing, 2019
Due to the sparsity of hyperspectral images, the dictionary learning framework has been applied in hyperspectral endmember extraction. However, current endmember extraction methods based on dictionary learning are not robust enough in noisy environments.
Xiaorui Song, Lingda Wu
doaj   +1 more source

Underdetermined Blind Source Separation Algorithm for Speech Signal Based on DSKSVD Dictionary Learning [PDF]

open access: yesJisuanji gongcheng, 2018
In order to overcome the shortcoming that the traditional learning algorithm training has limited dictionary size and large amount of computation,the algorithm of underdetermined blind source separation for speech signal based on the dictionary learning ...
LI Hu,XU Yan
doaj   +1 more source

Scale Adaptive Dictionary Learning [PDF]

open access: yesIEEE Transactions on Image Processing, 2014
Dictionary learning has been widely used in many image processing tasks. In most of these methods, the number of basis vectors is either set by experience or coarsely evaluated empirically. In this paper, we propose a new scale adaptive dictionary learning framework, which jointly estimates suitable scales and corresponding atoms in an adaptive fashion
Cewu Lu, Jianping Shi, Jiaya Jia
openaire   +4 more sources

Classification of mammogram images by dictionary learning

open access: yes, 2017
2017 International Artificial Intelligence and Data Processing Symposium, IDAP 2017 -- 16 September 2017 through 17 September 2017 -- 115012Dictionary Learning is a method used in signal and image processing.
Mucahid Barstugan   +3 more
core   +2 more sources

Seismic Signal Compression Using Nonparametric Bayesian Dictionary Learning via Clustering

open access: yesAlgorithms, 2017
We introduce a seismic signal compression method based on nonparametric Bayesian dictionary learning method via clustering. The seismic data is compressed patch by patch, and the dictionary is learned online.
Xin Tian, Song Li
doaj   +1 more source

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