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Maximum entropy methods for texture synthesis: theory and practice [article]

Valentin De Bortoli and Agnes Desolneux and Alain Durmus and Bruno Galerne and Arthur Leclaire
2019 arXiv   pre-print
First, we use results from information geometry to assess that our method yields a probability measure which has maximum entropy under some constraints in expectation.  ...  These methods often rely on the minimization of some variational formulation on the image space for which the minimizers are assumed to be the solutions of the synthesis problem.  ...  This maximum entropy model was introduced by [53] and used in texture synthesis by [96] . Under some assumptions the macrocanonical model can be written in a closedform.  ... 
arXiv:1912.01691v1 fatcat:2xy6eoauujaipo4hwzvtsv2rpm

Polymer Synthesis: Theory and Practice

Matthias Rehahn Harald Cherdron
2020 Zenodo  
Nowadays, macromolecules and polymers are synonyms for substances with especially high molecular masses.  ...  obtained by so-called polyreactions consist of large molecules, for which Staudinger proposed the term "macromolecules".  ...  entropy.  ... 
doi:10.5281/zenodo.4022325 fatcat:6cen2wnwvffodm3w3eo3gongbi

Philosophy of Education

Michael Taylor
1977 Social Theory and Practice  
and writing ▪ aesthetic appreciation and self-expression in the fine, performing, practical and popular arts ▪ the ability to think and evaluate constructively and creatively ▪ self-discipline including  ...  behavior based on respect and appreciation for human values, beliefs and the rights of others ▪ an awareness of our relationships to the family and to local, national and world communities ▪ a knowledge  ...  -Solubility -Colligative Properties • Kinetics and Equilibrium -Collision Theory -Reaction Rates -Potential Energy Diagrams -Endothermic / Exothermic -Catalysts -Enthalpy, Entropy, Spontaneity  ... 
doi:10.5840/soctheorpract1977437 fatcat:ly7e6vjrirckrdmrqgowitmesa

A survey of exemplar-based texture synthesis [article]

Lara Raad, Axel Davy, Agnès Desolneux, Jean-Michel Morel
2017 arXiv   pre-print
Exemplar-based texture synthesis is the process of generating, from an input sample, new texture images of arbitrary size and which are perceptually equivalent to the sample.  ...  The two main approaches are statistics-based methods and patch re-arrangement methods.  ...  Acknowledgements We thank Rafael Grompone von Gioi for valuable corrections and suggestions, Arthur Leclaire and Yang Lu for their feedback and for helping produce some of the experiments, and the anonymous  ... 
arXiv:1707.07184v2 fatcat:j5ba4r6perfbpdpzy7gnx6ihyu

A survey of exemplar-based texture synthesis

Lara Raad, Axel Davy, Agnès Desolneux, Jean-Michel Morel
2018 Annals of Mathematical Sciences and Applications  
This article accounts for the very rapid and impressive recent apparition of new texture synthesis methods with striking results. We shall retrace their theoretical roots.  ...  There is so far no complete mathematical theory that would, first, give a formal axiomatic of texture, and then prove that some texture synthesis algorithm matches this definition.  ...  Acknowledgements We thank Rafael Grompone von Gioi for valuable corrections and suggestions, Arthur Leclaire and Yang Lu for their feedback and for helping produce some of the experiments, and the anonymous  ... 
doi:10.4310/amsa.2018.v3.n1.a4 fatcat:atf736rbi5fitka6lotklfhp2m

Appearance compression and synthesis based on 3D model for mixed reality

K. Nishino, Y. Sato, K. Ikeuchi
1999 Proceedings of the Seventh IEEE International Conference on Computer Vision  
We previously proposed the Eigen-Texture method, a new rendering method for generating virtual images of objects from thier real images to deal with the problems posed by past work in image-based methods  ...  Eigen-Texture method samples apperances of a real object under various illumination and viewing conditions, and compresses them in the 2D coordinate system defined on the 3D model surface.  ...  Acknowledgements Special thanks to CAD Center Corporation and Koutokuin for their help in scanning the huge buddha.  ... 
doi:10.1109/iccv.1999.791195 dblp:conf/iccv/NishinoSI99 fatcat:x4ofckgaenbdrnf4ldpg5s6pd4

Order-Independent Texture Synthesis [article]

Li-Yi Wei, Marc Levoy
2014 arXiv   pre-print
To circumvent this problem, textures are synthesized beforehand at some maximum resolution and rendered using texture mapping.  ...  Search-based texture synthesis algorithms are sensitive to the order in which texture samples are generated; different synthesis orders yield different textures.  ...  Acknowledgments We would like to thank Kekoa Proudfoot and Ian Buck for providing the glsim code, Ravi Ramamoorthi and James Davis for commenting on early drafts of the paper, and members of the Stanford  ... 
arXiv:1406.7338v1 fatcat:xe5nhi755jcnbpgn47zy6hkwbe

The use of bioacoustics in anuran taxonomy: theory, terminology, methods and recommendations for best practice

Jörn Köhler, Martin Jansen, Ariel Rodríguez, Philippe J. R. Kok, Luís Felipe Toledo, Mike Emmrich, Frank Glaw, Célio F. B. Haddad, Mark-Oliver Rödel, Miguel Vences
2017 Zenodo  
We here review the terminology and variation of frog calls from a perspective of integrative taxonomy, and provide hands-on protocols for recording, analyzing, comparing, interpreting and describing these  ...  We provide recommendations for terminology of frog vocalizations, with call, note and pulse being the fundamental subunits to be used in descriptions and comparisons.  ...  We are furthermore indebted to two anonymous reviewers for valuable comments and to Pedro Ivo Simões for his remarkable editorial efforts in handling and improving this manuscript.  ... 
doi:10.5281/zenodo.2845811 fatcat:jez6tbfxdnfqrm5mpwqryhvyxy

High resolution micrograph synthesis using a parametric texture model and a particle filter

Ramakrishna Tipireddy, Roger Ghanem, Somnath Ghosh, Daniel Paquet
2013 Integrating Materials and Manufacturing Innovation  
The proposed method combines a texture synthesis procedure with a particle filter and produces good quality high resolution micrographs.  ...  We present a methodology for synthesizing high resolution micrographs from low resolution ones using a parametric texture model and a particle filter.  ...  Based on maximum-entropy arguments, prior knowledge for the Bayesian framework takes the form of a Gaussian distribution with an interpolated low resolution micrograph as a mean and an assumed variance  ... 
doi:10.1186/2193-9772-2-2 fatcat:z4jxdpfjn5bfjikfzolu3cqk7e

Fast Bi-layer Neural Synthesis of One-Shot Realistic Head Avatars [article]

Egor Zakharov, Aleksei Ivakhnenko, Aliaksandra Shysheya, Victor Lempitsky
2020 arXiv   pre-print
The texture image is generated offline, warped and added to the coarse image to ensure a high effective resolution of synthesized head views.  ...  We compare our system to analogous state-of-the-art systems in terms of visual quality and speed.  ...  We follow a large body of previous works [7, 17, 37, 41] and use a hinge loss as a substitute for the original binary cross entropy loss.  ... 
arXiv:2008.10174v1 fatcat:powvwjsthrablcijtcfqj2qcjm

Synthesis of intensity gradient and texture information for efficient three-dimensional segmentation of medical volumes

Sreenath Rao Vantaram, Eli Saber, Sohail A. Dianat, Yang Hu
2015 Journal of Medical Imaging  
We propose a framework that efficiently employs intensity, gradient, and textural features for three-dimensional (3-D) segmentation of medical (MRI/CT) volumes.  ...  This partition map is combined with an entropy-based texture descriptor along with intensity and gradient attributes in a multivariate analysis-based volume merging procedure that fuses subvolumes with  ...  Paul Yushkevich from the Penn Image Computing and Science Laboratory at the University of Pennsylvania for providing the ITK-SNAP algorithm and Dr. Andrew J.  ... 
doi:10.1117/1.jmi.2.2.024003 pmid:26158098 pmcid:PMC4478753 fatcat:o3osvvorw5calhgizalgrxs7qy

Wavelet-based texture analysis and synthesis using hidden markov models

Guoliang Fan, Xiang-Gen Xia
2003 IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications  
For texture synthesis, we develop an iterative maximum likelihood-based texture synthesis algorithm which adopts HMT or HMT-3S to impose the joint statistics of the texture DWT, and it is shown that the  ...  Specifically, for texture classification, we study four wavelet-based methods, and experimental results show that HMT-3S provides the highest percentage of correct classification of over 95% upon a set  ...  Acknowledgment The authors would like to thank the anonymous reviewers for their suggestions on the improvements of this paper.  ... 
doi:10.1109/tcsi.2002.807520 fatcat:meggys2lwbabrcvnrirngmrvau

Despeckle Filtering Algorithms and Software for Ultrasound Imaging

Christos P. Loizou, Constantinos S. Pattichis
2008 Synthesis Lectures on Algorithms and Software in Engineering  
[40] , entropy and other texture features were used to classify between symptomatic and asymptomatic carotid plaques for assessing the risk of stroke.  ...  texture Features In the bottom part of Table 4 .12, it is shown that the entropy was increased, and the contrast was reduced significantly in the cases of DS and NDS for both scanners.  ...  Appendix A.2 presents an example in MATLAB code for a complete application of despeckling, image quality evaluation, and texture analysis.  ... 
doi:10.2200/s00116ed1v01y200805ase001 fatcat:n6v3zqwy3revjkl533r7o3ns3y

Maximum Entropy Flow Networks [article]

Gabriel Loaiza-Ganem, Yuanjun Gao, John P. Cunningham
2017 arXiv   pre-print
Maximum entropy modeling is a flexible and popular framework for formulating statistical models given partial knowledge.  ...  Simulation results demonstrate the effectiveness of our method, and applications to finance and computer vision show the flexibility and accuracy of using maximum entropy flow networks.  ...  Filters, random fields and maximum entropy (frame): Towards a unified theory for texture modeling.  ... 
arXiv:1701.03504v2 fatcat:jbturtm6ejhdroulpmq7fxwmo4

Partial Disentanglement of Hierarchical Variational Auto-Encoder for Texture Synthesis

Marek Jakab, Lukas Hudec, Wanda Benesova
2020 IET Computer Vision  
The experiments with proposed architecture demonstrate the potential of variational auto-encoders in the domain of texture synthesis and also tend to yield sharper reconstruction as well as synthesised  ...  The generative model is also capable of synthesising complex real-world textures. The model consists of multiple separate latent layers responsible for learning the gradual levels of texture details.  ...  Acknowledgments The authors would like to thank the Slovakian Grant VEGA 1/0874/17 and the Research and Development Operational Programme for the project University Science Park of STU Bratislava, ITMS  ... 
doi:10.1049/iet-cvi.2019.0416 fatcat:xf5sxzsjovggtdraozzma7sns4
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