Results 161 to 170 of about 1,139,614 (201)
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Web grammars and picture description
Computer Graphics and Image Processing, 1972This paper describes an investigation of the practicality of describing pictures using linguistic structures other than strings-in particular, using labelled directed graphs (“webs”). A parsing program for a class of “neural network” pictures is demonstrated.
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A multimodal local grammar of evaluation in picture books
Language and CommunicationJiajin Xu, Ding Huang
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A HIERARCHY RESULT FOR RANDOM FORBIDDING CONTEXT PICTURE GRAMMARS
International Journal of Pattern Recognition and Artificial Intelligence, 1999We use random context picture grammars to generate pictures through successive refinement. The productions of such a grammar are context-free, but their application is regulated — "permitted" or "forbidden" — by context randomly distributed in the developing picture. Grammars using this relatively weak context often succeed where context-free grammars
Sigrid Ewert, Andries P. J. van der Walt
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(UN-)DECIDABILITY OF GEOMETRIC PROPERTIES OF PICTURES GENERATED BY COLLAGE GRAMMARS
Fundamenta Informaticae, 1996Collage grammars are based on hyperedge replacement in a geometric environment and provide context-free syntactic devices for the generation of picture languages. An intriguing question is which geometric properties of the generated pictures can be decided by inspecting the generating collage grammars.
Frank Drewes, Hans-Jörg Kreowski
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Mathematical picture grammar applied to script generation
Computer Graphics and Image Processing, 1977In this paper a model of Mathematical Picture Grammar is described which has been developed and applied to generate the scripts of various Asian languages, e.g., Persian, Arabic, Urdu, Hindi, Bengala, and Kannada, using an IBM 1130 computer. The system of script generation has been developed through four stages.
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Computing Raster Images from Grid Picture Grammars
2001Journal of Automata, Languages and Combinatorics, Volume 8, Number 3, 2003, 499 ...
Frank Drewes +3 more
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Regional Languages and Tiling: A Unifying Approach to Picture Grammars
2008Several classical models of picture grammars based on array rewriting rules can be unified and extended by a tiling based approach. The right part of a rewriting rule is formalized by a finite set of permitted tiles. We focus on a simple type of tiling, named regional, and define the corresponding regional tile grammars.
CHERUBINI, ALESSANDRA +2 more
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Parsing visual languages with picture layout grammars
Journal of Visual Languages & Computing, 1991Visual programming languages are languages for programming using visual expressions. Picture layout grammars are a mechanism for defining the syntax of visual languages. They allow the specification of both the logical structure and two-dimensinal layout of a visual language. Spatial parsing is the process of analysing an input picture to determine its
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Generalized Random Context Picture Grammars: The State of the Art
2012Generalized random context picture grammars (grcpgs) are a method of syntactic picture generation. The terminals are subsets of the Euclidean plane and the replacement of variables involves the building of functions that will eventually be applied to terminals. Context is used to permit or forbid production rules.
Sigrid Ewert, Max Rabkin
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SPIE Proceedings, 2003
Grammars have been used for the formal specification of programming languages, and there are a number of commercial products which now use grammars. However, these have tended to be focused mainly on flow control type applications. In this paper, we consider the potential use of picture grammars and inductive logic programming in generic image ...
P. G. Ducksbury, C. Kennedy, Z. Lock
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Grammars have been used for the formal specification of programming languages, and there are a number of commercial products which now use grammars. However, these have tended to be focused mainly on flow control type applications. In this paper, we consider the potential use of picture grammars and inductive logic programming in generic image ...
P. G. Ducksbury, C. Kennedy, Z. Lock
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