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Appearance Shock Grammar for Fast Medial Axis Extraction from Real Images [article]

Charles-Olivier Dufresne Camaro, Morteza Rezanejad, Stavros Tsogkas, Kaleem Siddiqi, Sven Dickinson
2020 arXiv   pre-print
We combine ideas from shock graph theory with more recent appearance-based methods for medial axis extraction from complex natural scenes, improving upon the present best unsupervised method, in terms  ...  We make the following specific contributions: i) we extend the shock graph representation to the domain of real images, by generalizing the shock type definitions using local, appearance-based criteria  ...  Acknowledgements We thank the Natural Sciences and Engineering Research Council of Canada (NSERC), the Fonds de recherche du Québec -Nature et technologies (FRQNT), and Samsung for research funding.  ... 
arXiv:2004.02677v1 fatcat:vohghovsererffnewmmzklfkqa

Using grammars for pattern recognition in images

Ricardo Wandré Dias Pedro, Fátima L. S. Nunes, Ariane Machado-Lima
2013 ACM Computing Surveys  
Some factors accountable for this increasing use regard its relatively simple understanding and its ability to represent some semantic pattern models found in images, both spatially and temporally.  ...  Moreover, since the 1980s grammars have been used in computer vision and related areas.  ...  The medial axis was used to retrieve the skeleton from an image.  ... 
doi:10.1145/2543581.2543593 fatcat:w2gi2ikoirfqlmbdjn5jtpnyuq

A Stochastic Grammar of Images

Song-Chun Zhu, David Mumford
2006 Foundations and Trends in Computer Graphics and Vision  
This exploratory paper quests for a stochastic and context sensitive grammar of images.  ...  (i) The grammar represents both the hierarchical decompositions from scenes, to objects, parts, primitives and pixels by terminal and non-terminal nodes and the contexts for spatial and functional relations  ...  Stuart Geman, Yingnian Wu, Harry Shum, Alan Yuille, and Joachim Buhmann for their extensive discussions and helpful comments. The first author also thanks many students at UCLA  ... 
doi:10.1561/0600000018 fatcat:4gicslrfufabratzlxeiz275nm

Dynamical systems and cognitive linguistics: toward an active morphodynamical semantics

René Doursat, Jean Petitot
2005 Neural Networks  
Singularities arise from a large-scale lattice of coupled excitable units exhibiting spatiotemporal pattern formation, in particular traveling waves.  ...  We suggest that this invariance can be explained by introducing morphodynamical transforms, which erase image details and create virtual structures or singularities (boundaries, skeleton), and call this  ...  Acknowledgements R.D. is grateful to Philip Goodman for welcoming him in his UNR lab, and to J.P. for his warm encouragements.  ... 
doi:10.1016/j.neunet.2005.06.009 pmid:16085386 fatcat:tpaofjiwlzbfraeyftnba2i2dq

Computational Symmetry in Computer Vision and Computer Graphics

Yanxi Liu
2008 Foundations and Trends in Computer Graphics and Vision  
Computational symmetry on real world data turns out to be challenging enough that, after decades of effort, a fully automated symmetry-savvy system remains elusive for real world applications.  ...  Though the term computational symmetry was formally defined a decade ago by the first author, referring to algorithmic treatment of symmetries, seeking symmetry from digital data has been attempted for  ...  Thanks also go to Jingchen Liu, Kyle Brocklehurst, and Seungkyu Lee for collecting citations on symmetry related papers, and Jingchen Liu for creating Figure 1  ... 
doi:10.1561/0600000008 fatcat:t4x5zq3n5jcjnktzlft63eblnm

The Evolution of Object Categorization and the Challenge of Image Abstraction [chapter]

Sven J. Dickinson, Sven J. Dickinson, Ales Leonardis, Bernt Schiele, Michael J. Tarr
Object Categorization  
[223] ), whose parts represent a qualitative partitioning of Blum's medial axis transform [35] , and whose edges span adjacent parts, directed from larger to smaller (image reproduced from [223] with  ...  In this example, taken from [275] , the clock grammar shown in (a) is used to recognize the two clocks (real and display) in the image shown in (b) (images reproduced from [275] , courtesy of Now Publishers  ... 
doi:10.1017/cbo9780511635465.002 fatcat:g6slig4pr5gjddribykdtf4ao4

Précis of Foundations of Language: Brain, Meaning, Grammar, Evolution,

Ray Jackendoff
2003 Behavioral and Brain Sciences  
Generative grammar was right to focus on the child's acquisition of language as its central problem, leading to the hypothesis of an innate Universal Grammar.  ...  The goal of this study is to reintegrate the theory of generative grammar into the cognitive sciences.  ...  extract verbs from the phrasal contexts in which they appear?  ... 
doi:10.1017/s0140525x03000153 fatcat:eewzkvv7wjc4tnn4okt7cbui64

Précis of Foundations of language: brain, meaning, grammar, evolution

Ray Jackendoff
2003 Behavioral and Brain Sciences  
Generative grammar was right to focus on the child's acquisition of language as its central problem, leading to the hypothesis of an innate Universal Grammar.  ...  The goal of this study is to reintegrate the theory of generative grammar into the cognitive sciences.  ...  extract verbs from the phrasal contexts in which they appear?  ... 
pmid:15377127 fatcat:bzensiywbngxjlsooeenx3czpm

Abstracts for 16th National Congress of Anatomy, 11th-14th September, 2014, Malatya, Turkey

2014 Anatomy (International Journal of Experimental and Clinical Anatomy)  
Using chemical markers for marking has started with acetylcholinesterase staining from 1982 onwards, continuing with tyrosine hydroxylase staining for monoamines, and antibody markers (i.e. calbindin,  ...  Traditional mapping of the human brainstem, as of other anatomical structures, is based on information from Nissl and myelin-stained sections, and information from connections and physiology.  ...  axis, angle between ramus long axis-horizontal axis, latero-medial length of condyle, distance between lateral pole of condyle and mandibular fossa, distance between medial pole of condyle and mandibular  ... 
doi:10.2399/ana.14.001s fatcat:iop72ynb5ffaboufdfygzsimyi

Investigating the buildup of precedence effect using reflection masking

Jess Hartcher‐O'Brien, M. Buchholz, M. Buchholz
2006 Journal of the Acoustical Society of America  
It covers a large area and has seating for 3690 people. It is used mainly for religious ceremonies and occasionally for concerts.  ...  surface was used for the rear wall.  ...  First, signal processing techniques are applied to sonic booms to extract the shock profiles from N waves measured on the ground.  ... 
doi:10.1121/1.4787437 fatcat:4h2rmntypzabhiivz7ddvu5uai

Predictors of auditory performance in hearing‐aid users: The role of cognitive function and auditory lifestyle

Martin D. Vestergaard
2006 Journal of the Acoustical Society of America  
First, signal processing techniques are applied to sonic booms to extract the shock profiles from N waves measured on the ground.  ...  F0 rise from the initial mora to the final mora was reliably larger for the final accented words than the unaccented ones when they were produced sentence-medially followed by a particle.  ...  It allows the monochromatic Green functions of point scatterers to be extracted from a data set.  ... 
doi:10.1121/1.4787675 fatcat:niry4qemhvdzvpeivahfcgd53a

Temporal processes involved in simultaneous reflection masking

Joerg M. Buchholz
2006 Journal of the Acoustical Society of America  
First, signal processing techniques are applied to sonic booms to extract the shock profiles from N waves measured on the ground.  ...  Am. ͑to appear͔͒.  ...  It allows the monochromatic Green functions of point scatterers to be extracted from a data set.  ... 
doi:10.1121/1.4787438 fatcat:paik6sldxff6fkga6wm7nmgp7m

Papers read at the 15th Annual Meeting of the Psychonomic Society

1974 Bulletin of the Psychonomic Society  
A third group received an equal number (10) of neutral verbalizations. and a fourth group received I 0 real shocks. All groups then received 10 real shocks.  ...  Was the imagine shock group reliably more responsive than subjects who had already received real shock?  ...  Echolocation appears inadequate for guidance at such high altitudes.  ... 
doi:10.3758/bf03336721 fatcat:hliyw3nyg5dadi7koywcyl66ha

The Remains of the Day in Dissociative Amnesia

Angelica Staniloiu, Hans J. Markowitsch
2012 Brain Sciences  
Memory is not a unity, but is divided along a content axis and a time axis, respectively.  ...  While encoding is based on a hierarchical arrangement of memory systems from procedural to episodic-autobiographical memory, retrieval allows independence in the sense that no matter how information is  ...  With respect to memory, this function implies that the amygdala appraises (automatically or consciously) the salience of newly incoming information and extracts those portions which appear worth being  ... 
doi:10.3390/brainsci2020101 pmid:24962768 pmcid:PMC4061789 fatcat:dklrphejtbhb3eliz7nec6245a

Affine invariant erosion of 3D shapes

S. Betelu, G. Sapiro, A. Tannenbaum
Proceedings Eighth IEEE International Conference on Computer Vision. ICCV 2001  
The most common skeleton is the medial axis, originally defined by Blum and has been the standard for many years.  ...  It has been the focus of research in many different fields and has found a variety of application areas, in computer graphics, machine vision, medical image processing, robotic navigation, document pro  ...  Some of them are: • Fast object recognition and tracking: This is the process of determining which, if any, of a given set of objects appear in a given image or image sequence.  ... 
doi:10.1109/iccv.2001.937621 dblp:conf/iccv/BeteluST01 fatcat:zl74myhw65gwnfa6l6cffk6kse
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