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Author ![]() |
Marçal Rusiñol | ||||
Title | Classificació semàntica i visual de documents digitals | Type | Journal | ||
Year | 2019 | Publication | Revista de biblioteconomia i documentacio | Abbreviated Journal | |
Volume | Issue | Pages | 75-86 | ||
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Abstract | Se analizan los sistemas de procesamiento automático que trabajan sobre documentos digitalizados con el objetivo de describir los contenidos. De esta forma contribuyen a facilitar el acceso, permitir la indización automática y hacer accesibles los documentos a los motores de búsqueda. El objetivo de estas tecnologías es poder entrenar modelos computacionales que sean capaces de clasificar, agrupar o realizar búsquedas sobre documentos digitales. Así, se describen las tareas de clasificación, agrupamiento y búsqueda. Cuando utilizamos tecnologías de inteligencia artificial en los sistemas de
clasificación esperamos que la herramienta nos devuelva etiquetas semánticas; en sistemas de agrupamiento que nos devuelva documentos agrupados en clusters significativos; y en sistemas de búsqueda esperamos que dada una consulta, nos devuelva una lista ordenada de documentos en función de la relevancia. A continuación se da una visión de conjunto de los métodos que nos permiten describir los documentos digitales, tanto de manera visual (cuál es su apariencia), como a partir de sus contenidos semánticos (de qué hablan). En cuanto a la descripción visual de documentos se aborda el estado de la cuestión de las representaciones numéricas de documentos digitalizados tanto por métodos clásicos como por métodos basados en el aprendizaje profundo (deep learning). Respecto de la descripción semántica de los contenidos se analizan técnicas como el reconocimiento óptico de caracteres (OCR); el cálculo de estadísticas básicas sobre la aparición de las diferentes palabras en un texto (bag-of-words model); y los métodos basados en aprendizaje profundo como el método word2vec, basado en una red neuronal que, dadas unas cuantas palabras de un texto, debe predecir cuál será la siguiente palabra. Desde el campo de las ingenierías se están transfiriendo conocimientos que se han integrado en productos o servicios en los ámbitos de la archivística, la biblioteconomía, la documentación y las plataformas de gran consumo, sin embargo los algoritmos deben ser lo suficientemente eficientes no sólo para el reconocimiento y transcripción literal sino también para la capacidad de interpretación de los contenidos. |
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Notes | DAG; 600.084; 600.135; 600.121; 600.129 | Approved | no | ||
Call Number | Admin @ si @ Rus2019 | Serial | 3282 | ||
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Author ![]() |
M.A. Garcia; Angel Sappa | ||||
Title | Efficient Generation of Discontinuity-Preserving Adaptive Triangulations from Range Images | Type | Journal | ||
Year | 2004 | Publication | IEEE Trans. on Systems, Man, and Cybernetics (Part B), 34(5):2003–2014 (IF: 1.052) | Abbreviated Journal | |
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Notes | Approved | no | |||
Call Number | ADAS @ adas @ GaS2004 | Serial | 457 | ||
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Author ![]() |
M. Gonzalez-Audicana; Xavier Otazu; O. Fors; A. Seco | ||||
Title | Comparison between Mallats and the trous discrete wavelet transform based algorithms for the fusion of multispectral and panchromatic images | Type | Journal | ||
Year | 2005 | Publication | International Journal of Remote Sensing, 26(3):595–614 (IF: 0.925) | Abbreviated Journal | |
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Notes | CIC | Approved | no | ||
Call Number | CAT @ cat @ GOF2005 | Serial | 530 | ||
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Author ![]() |
M. Gomez; J. Mauri; E. Fernandez-Nofrerias; Oriol Rodriguez-Leor; Carme Julia; Oriol Pujol; Petia Radeva | ||||
Title | Diferenciacion de las estructuras del vaso coronario mediante el procesamiento de imagenes y el analisis de las diferentes texturas a partir de la ecografia intracoronaria | Type | Journal | ||
Year | 2002 | Publication | XXXVIII Congreso Nacional de la Sociedad Española de Cardiologia | Abbreviated Journal | |
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Address | Madrid | ||||
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Notes | MILAB;HuPBA | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ GMF2002f | Serial | 433 | ||
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Author ![]() |
M. Gomez; J. Mauri; E. Fernandez-Nofrerias; Oriol Rodriguez-Leor; Carme Julia; Misael Rosales; Petia Radeva | ||||
Title | Modelo fisico para la simulacion de ultrasonido Intravascular. | Type | Journal | ||
Year | 2002 | Publication | XXXVIII Congreso Nacional de la Sociedad Española de Cardiologia. | Abbreviated Journal | |
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Address | Madrid, Espanya | ||||
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Notes | MILAB | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ GMF2002b | Serial | 308 | ||
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Author ![]() |
M. Gomez; J. Mauri; E. Fernandez-Nofrerias; Oriol Rodriguez-Leor; Carme Julia; David Rotger; Petia Radeva; V. Valle | ||||
Title | Una nova aplicacio informatica per a la correlacio d imatges angiografiques i d ecografia intracoronaria. | Type | Journal | ||
Year | 2002 | Publication | Revista de la Societat Catalana de Cardiologia, 4(4): 42, XIV Congres de la Societat Catalana de Cardiologia. | Abbreviated Journal | |
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Address | Barcelona, Espanya | ||||
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Notes | MILAB | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ GMF2002a | Serial | 307 | ||
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Author ![]() |
M. Bressan; Jordi Vitria | ||||
Title | Independent Feature Selection | Type | Journal | ||
Year | 2003 | Publication | IEEE Transactions on Pattern Analysis and Machine Intelligence, 25(10): 1312–1317 (IF: 3.823) | Abbreviated Journal | |
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ BrV2003a | Serial | 366 | ||
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Author ![]() |
M. Bressan; David Guillamet; Jordi Vitria | ||||
Title | Using an ICA Representation of Local Color Histograms for Object Recognition | Type | Journal | ||
Year | 2003 | Publication | Pattern Recognition, 36(3):691–701 (IF: 1.611) | Abbreviated Journal | |
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ BGV2003 | Serial | 365 | ||
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Author ![]() |
M. Bressan; David Guillamet; Jordi Vitria | ||||
Title | Multiclass Object Recognition using Class-Conditional Independent Component Analisis | Type | Journal | ||
Year | 2004 | Publication | Cybernetics and Systems, 35/1:35–61 (IF: 0.768) | Abbreviated Journal | |
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Notes | OR;MV | Approved | no | ||
Call Number | BCNPCL @ bcnpcl @ BGV2004 | Serial | 442 | ||
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Author ![]() |
Lluis Barcelo; X. Binefa | ||||
Title | Bayesian Video Mosaicing with moving objects | Type | Journal | ||
Year | 2002 | Publication | International Journal of Pattern Recognition and Artificial Intelligence, 16(3): 341–348 (IF: 0.359) | Abbreviated Journal | |
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Notes | Approved | no | |||
Call Number | Admin @ si @ BaB2002 | Serial | 268 | ||
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Author ![]() |
Lasse Martensson; Ekta Vats; Anders Hast; Alicia Fornes | ||||
Title | In Search of the Scribe: Letter Spotting as a Tool for Identifying Scribes in Large Handwritten Text Corpora | Type | Journal | ||
Year | 2019 | Publication | Journal for Information Technology Studies as a Human Science | Abbreviated Journal | HUMAN IT |
Volume | 14 | Issue | 2 | Pages | 95-120 |
Keywords | Scribal attribution/ writer identification; digital palaeography; word spotting; mediaeval charters; mediaeval manuscripts | ||||
Abstract | In this article, a form of the so-called word spotting-method is used on a large set of handwritten documents in order to identify those that contain script of similar execution. The point of departure for the investigation is the mediaeval Swedish manuscript Cod. Holm. D 3. The main scribe of this manuscript has yet not been identified in other documents. The current attempt aims at localising other documents that display a large degree of similarity in the characteristics of the script, these being possible candidates for being executed by the same hand. For this purpose, the method of word spotting has been employed, focusing on individual letters, and therefore the process is referred to as letter spotting in the article. In this process, a set of ‘g’:s, ‘h’:s and ‘k’:s have been selected as templates, and then a search has been made for close matches among the mediaeval Swedish charters. The search resulted in a number of charters that displayed great similarities with the manuscript D 3. The used letter spotting method thus proofed to be a very efficient sorting tool localising similar script samples. | ||||
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Notes | DAG; 600.097; 600.140; 600.121 | Approved | no | ||
Call Number | Admin @ si @ MVH2019 | Serial | 3234 | ||
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Author ![]() |
L. Rothacker; Marçal Rusiñol; Josep Llados; G.A. Fink | ||||
Title | A Two-stage Approach to Segmentation-Free Query-by-example Word Spotting | Type | Journal | ||
Year | 2014 | Publication | Manuscript Cultures | Abbreviated Journal | |
Volume | 7 | Issue | Pages | 47-58 | |
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Abstract | With the ongoing progress in digitization, huge document collections and archives have become available to a broad audience. Scanned document images can be transmitted electronically and studied simultaneously throughout the world. While this is very beneficial, it is often impossible to perform automated searches on these document collections. Optical character recognition usually fails when it comes to handwritten or historic documents. In order to address the need for exploring document collections rapidly, researchers are working on word spotting. In query-by-example word spotting scenarios, the user selects an exemplary occurrence of the query word in a document image. The word spotting system then retrieves all regions in the collection that are visually similar to the given example of the query word. The best matching regions are presented to the user and no actual transcription is required.
An important property of a word spotting system is the computational speed with which queries can be executed. In our previous work, we presented a relatively slow but high-precision method. In the present work, we will extend this baseline system to an integrated two-stage approach. In a coarse-grained first stage, we will filter document images efficiently in order to identify regions that are likely to contain the query word. In the fine-grained second stage, these regions will be analyzed with our previously presented high-precision method. Finally, we will report recognition results and query times for the well-known George Washington benchmark in our evaluation. We achieve state-of-the-art recognition results while the query times can be reduced to 50% in comparison with our baseline. |
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Notes | DAG; 600.061; 600.077 | Approved | no | ||
Call Number | Admin @ si @ | Serial | 3190 | ||
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Author ![]() |
Juan Ramon Terven Salinas; Joaquin Salas; Bogdan Raducanu | ||||
Title | Estado del Arte en Sistemas de Vision Artificial para Personas Invidentes | Type | Journal | ||
Year | 2013 | Publication | Komputer Sapiens | Abbreviated Journal | KS |
Volume | 1 | Issue | Pages | 20-25 | |
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Notes | OR;MV | Approved | no | ||
Call Number | Admin @ si @ TSR2013 | Serial | 2231 | ||
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Author ![]() |
Juan Andrade; A. Sanfeliu | ||||
Title | The effects of partial observability when building fully correlated maps | Type | Journal | ||
Year | 2005 | Publication | IEEE Transactions on Robotics, 21(4):771–777 (IF: 1.486) | Abbreviated Journal | |
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Call Number | Admin @ si @ AnS2005 | Serial | 594 | ||
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Author ![]() |
Josep Llados; J. Lopez-Krahe; D. Archambault | ||||
Title | Special Issue on Information Technologies for Visually Impaired People | Type | Journal | ||
Year | 2007 | Publication | Novatica | Abbreviated Journal | |
Volume | 186 | Issue | Pages | 4-7 | |
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Notes | DAG | Approved | no | ||
Call Number | DAG @ dag @ LLA2007a | Serial | 903 | ||
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