Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Powiadomienia systemowe
  • Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  graphic recognition
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available remote Geohraphic map image interpretation : survey and problems
EN
This paper is brief survey of the most common large scale (1:500-1:1000) geographic map processing techniques in the traditional three levels of document image analysis: pixel-level processing, feature-level analysis and graphic/text recognition and interpretation, followed by a description of some of the most relevant systems developed for map interpretation. The systems (methods) are classifield depending on the type of map they can interpret.
EN
In this work, a graph-based algorithm for symbol recognition in hand-drawn architectural plans has been described. The algorithm belongs to a prototype of man-machine interface consisting in the introduction of hand-drawndesigns to a CADsystem. Documentsand symbol prototypes are represented in terms of a Region Adjecency Graph (RAG) structure. Hence, the localization of symbol instaces in documents is performed by an error-tolerant subgraph isomorphism algorithm that looks for the minimum cost edit sequence that transforms a model graph to an input one. In this paper we describe this algorithm and the set of graph edit operations designed to transform RAGs. The main idea of the algorithm is to formulate the distance between two RAGs in terms of the string edit distance between the boundary strings of the corresponding regions. The main advantage of the algorithm is its ability to cope with distorted structuredand its invariance to rotation, translation and scaling.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.