Syntax-directed interpretation of classes of pictures
Communications of the ACM
Linguistic methods in picture processing: a survey
AFIPS '68 (Fall, part I) Proceedings of the December 9-11, 1968, fall joint computer conference, part I
A method for the structural analysis of two-dimensional mathematical expressions
Information Sciences: an International Journal
A declarative specification and semantics for visual languages
Journal of Visual Languages and Computing
Visual grammars for visual languages
AAAI'87 Proceedings of the sixth National conference on Artificial intelligence - Volume 2
Visual grammars for visual languages
AAAI'87 Proceedings of the sixth National conference on Artificial intelligence - Volume 2
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A method for the description of the hierarchical structure of two-dimensional pictures is proposed. The model is called picture-processing grammar. It can be regarded as an extension of phrase-structure grammars to the two-dimensional case. A picture analysis program is described. It accepts picture-processing grammar in tabular form and processes pictures using that grammar. Experiments have been performed to analyze hand-written numerals, mathematical expressions and line drawings. Some practical applications are discussed.