Publicacions CVC -- Query Results

	Publicacions CVC Home \| Show All \| Simple Search \| Advanced Search \| Add Record \| Import	Login Quick Search: Field: contains: ...
	1–3 of 3 records found matching your query (RSS \| history):

Search & Display Options

Select All Deselect All

<< 1 >>

List View

Citations

Details

	Records
	Author	Josep Llados; Horst Bunke; Enric Marti
	Title	Finding rotational symmetries by cyclic string matching			Type	Journal Article
	Year	1997	Publication	Pattern recognition letters	Abbreviated Journal	PRL
	Volume	18	Issue	14	Pages	1435-1442
	Keywords	Rotational symmetry; Reflectional symmetry; String matching
	Abstract	Symmetry is an important shape feature. In this paper, a simple and fast method to detect perfect and distorted rotational symmetries of 2D objects is described. The boundary of a shape is polygonally approximated and represented as a string. Rotational symmetries are found by cyclic string matching between two identical copies of the shape string. The set of minimum cost edit sequences that transform the shape string to a cyclically shifted version of itself define the rotational symmetry and its order. Finally, a modification of the algorithm is proposed to detect reflectional symmetries. Some experimental results are presented to show the reliability of the proposed algorithm
	Address
	Corporate Author				Thesis
	Publisher	Elsevier	Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes	DAG;IAM;			Approved	no
	Call Number	IAM @ iam @ LBM1997a			Serial	1562
Permanent link to this record



	Author	Josep Llados; Horst Bunke; Enric Marti
	Title	Structural Recognition of hand drawn floor plans			Type	Conference Article
	Year	1996	Publication	VI National Symposium on Pattern Recognition and Image Analysis	Abbreviated Journal
	Volume		Issue		Pages
	Keywords	Rotational Symmetry; Reflectional Symmetry; String Matching.
	Abstract	A system to recognize hand drawn architectural drawings in a CAD environment has been deve- loped. In this paper we focus on its high level interpretation module. To interpret a floor plan, the system must identify several building elements, whose description is stored in a library of pat- terns, as well as their spatial relationships. We propose a structural approach based on subgraph isomorphism techniques to obtain a high-level interpretation of the document. The vectorized input document and the patterns to be recognized are represented by attributed graphs. Discrete relaxation techniques (AC4 algorithm) have been applied to develop the matching algorithm. The process has been divided in three steps: node labeling, local consistency and global consistency verification. The hand drawn creation causes disturbed line drawings with several accuracy errors, which must be taken into account. Here we have identified them and the AC4 algorithm has been adapted to manage them.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Cordoba	Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes	DAG;IAM;			Approved	no
	Call Number	IAM @ iam @ LIM1995			Serial	1565
Permanent link to this record



	Author	Josep Llados; Horst Bunke; Enric Marti
	Title	Using cyclic string matching to find rotational and reflectional symmetric shapes			Type	Conference Article
	Year	1996	Publication	Dagstuhl Seminar on Modelling and Planning for Sensor–based Intelligent Robot Systems	Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher	World Scientific	Place of Publication	Saarbrucken (Germany).	Editor	R.C. Bolles, H.B.H.N.
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes	DAG;IAM			Approved	no
	Call Number	IAM @ iam @ LBM1996			Serial	1564
Permanent link to this record