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Gemma Sanchez and Josep Llados. 2001. A Graph Grammar to Recognize Textured Symbols..
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Josep Llados, Felipe Lumbreras, V. Chapaprieta and J. Queralt. 2001. ICAR: Identity Card Automatic Reader..
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N. Zakaria, Jean-Marc Ogier and Josep Llados. 2005. On-line Graphics Recognition based on Invariant Spatio-Sequential Descriptor: Fuzzy Matrix.
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Joan Mas, Gemma Sanchez and Josep Llados. 2005. An Incremental Parser to Recognize Diagram Symbols and Gestures represented by Adjacency Grammars.
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Anton Cervantes, Gemma Sanchez, Josep Llados, Agnes Borras and A. Rodriguez. 2005. Biometric Recognition Based on Line Shape Descriptors. Sixth IAPR International Workshop on Graphics Recognition (GREC 2005).335–344.
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Thanh Ha Do, Salvatore Tabbone and Oriol Ramos Terrades. 2016. Sparse representation over learned dictionary for symbol recognition. SP, 125, 36–47.
Abstract: In this paper we propose an original sparse vector model for symbol retrieval task. More speci cally, we apply the K-SVD algorithm for learning a visual dictionary based on symbol descriptors locally computed around interest points. Results on benchmark datasets show that the obtained sparse representation is competitive related to state-of-the-art methods. Moreover, our sparse representation is invariant to rotation and scale transforms and also robust to degraded images and distorted symbols. Thereby, the learned visual dictionary is able to represent instances of unseen classes of symbols.
Keywords: Symbol Recognition; Sparse Representation; Learned Dictionary; Shape Context; Interest Points
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Partha Pratim Roy, Eduard Vazquez, Josep Llados, Ramon Baldrich and Umapada Pal. 2007. A System to Retrieve Text/Symbols from Color Maps using Connected Component and Skeleton Analysis. In J. Llados, W.L., J.M. Ogier, ed. Seventh IAPR International Workshop on Graphics Recognition.79–78.
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Mathieu Nicolas Delalandre, Tony Pridmore, Ernest Valveny, Eric Trupin and Herve Locteau. 2007. Building Synthetic Graphical Documents for Performance Evaluation. Seventh IAPR International Workshop on Graphics Recognition.84–87.
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Mathieu Nicolas Delalandre, Jean-Marc Ogier and Josep Llados. 2007. A Fast System for the Retrieval of Ornamental Letter Image. Seventh IAPR International Workshop on Graphics Recognition.51–54.
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Joan Mas, J.A. Jorge, Gemma Sanchez and Josep Llados. 2007. Describing and Parising Hand-Drawn Sketches using a Syntactic Approach. In J. Llados, W.L., J.M. Ogier, ed. Seventh IAPR International Workshop on Graphics Recognition.61–62.
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