Enric Marti, Jordi Regincos, Jaime Lopez-Krahe, & Juan J.Villanueva. (1993). Hand line drawing interpretation as three-dimensional objects. Signal Processing – Intelligent systems for signal and image understanding, 32(1-2), 91–110.
Abstract: In this paper we present a technique to interpret hand line drawings as objects in a three-dimensional space. The object domain considered is based on planar surfaces with straight edges, concretely, on ansextension of Origami world to hidden lines. The line drawing represents the object under orthographic projection and it is sensed using a scanner. Our method is structured in two modules: feature extraction and feature interpretation. In the first one, image processing techniques are applied under certain tolerance margins to detect lines and junctions on the hand line drawing. Feature interpretation module is founded on line labelling techniques using a labelled junction dictionary. A labelling algorithm is here proposed. It uses relaxation techniques to reduce the number of incompatible labels with the junction dictionary so that the convergence of solutions can be accelerated. We formulate some labelling hypotheses tending to eliminate elements in two sets of labelled interpretations. That is, those which are compatible with the dictionary but do not correspond to three-dimensional objects and those which represent objects not very probable to be specified by means of a line drawing. New entities arise on the line drawing as a result of the extension of Origami world. These are defined to enunciate the assumptions of our method as well as to clarify the algorithms proposed. This technique is framed in a project aimed to implement a system to create 3D objects to improve man-machine interaction in CAD systems.
Keywords: Line drawing interpretation; line labelling; scene analysis; man-machine interaction; CAD input; line extraction
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Jordi Vitria, X. Binefa, & Juan J. Villanueva. (1992). Morphological Algorithms for Visual Analysis of Integrated Circuits..
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Yuhua Luo, Francisco Jose Perales, & Juan J. Villanueva. (1992). An automatic Rotoscopy System for Human Motion Based on a Biomedical Graphical Model. Computer & Graphics, 16(4), 355–362.
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X. Binefa, Jordi Vitria, & Juan J. Villanueva. (1992). Three dimensional inspection of integrated circuits: a depth from focus approach..
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V. Valev, & Petia Radeva. (1992). Determining structural descriptions by boolean formulas advances in structural and syntactic Pattern Recognition..
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N. Pares, & J.R. Serra. (1992). Tailleur: El problema del sastre..
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V. Valev, & Petia Radeva. (1992). A Method of Solving Pattern or image Recognition Problems by Learning Boolean Formulas..
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V. Valev, & Petia Radeva. (1992). Determining Structural Description by Boolean Formulas. In H. Bunke (Ed.), Advances in Structural and Syntactic Pattern Recognition (Vol. 5, 131–140). Machine Perception and Artificial Intelligence:. World Scientific.
Abstract: Pattern recognition is an active area of research with many applications, some of which have reached commercial maturity. Structural and syntactic methods are very powerful. They are based on symbolic data structures together with matching, parsing, and reasoning procedures that are able to infer interpretations of complex input patterns.
This book gives an overview of the latest developments and achievements in the field.
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X. Binefa, Jordi Vitria, & Maria Vanrell. (1992). Reconstruccion tridimensional de imagenes Microscopicas..
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X. Binefa, Jordi Vitria, & Xavier Roca. (1992). Deteccion de profundidad en imagenes monoculares mediante vision activa..
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Enric Marti, Jordi Regincos, Jaime Lopez-Krahe, & Juan J.Villanueva. (1992). Interpretación de dibujos lineales a mano alzada como objetos 3D. In V Simposium Nacional de Reconocimiento de Formas y Análisis de Imágenes. València.
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J.A.Perez, Enric Marti, & Juan J.Villanueva. (1992). Interfase de Usuario de Entrada de Datos 3D en un CAD de Cartografía Urbana a partir de Pares Estereoscópicos. In II Congreso Español de Informática Gráfica (pp. 47–60).
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Joan Serrat, J. Argemi, & Juan J. Villanueva. (1991). Automatization of TW2 method using a knowledge-based image analysis system. In VIth International Congress of Auxology..
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A. Dupuy, Joan Serrat, Jordi Vitria, & J. Pladellorens. (1991). Analysis of gammagraphic images by mathematical morphology. In Pattern Recognition and image Analysis: IV Spanish Symposium of Pattern Recognition and image Analysis, World Scientific Pub..
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Joan Serrat, Jordi Vitria, & J. Pladellorens. (1991). Morphological Segmentation of Heart Scintigraphic image Sequences. In Computer Assisted Radiology..
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