El gobierno de K'ihnich Bahlam Chapaht corresponde a uno de los más longevos de todos los gob... more El gobierno de K'ihnich Bahlam Chapaht corresponde a uno de los más longevos de todos los gobernantes conocidos de Tonina. Con excepción de su nacimiento y entronización, conocidos por referencias retrospectivas muy reiteradas, es poco lo que se conoce de su vida. Sin embargo, gracias al recientemente restaurado Monumento 181 y al altar identificado como Monumento 182, hemos logrado reconstruir pormenores adicionales de su gobierno. En el presente ensayo, presentamos nuevos datos sobre ritualidad y jerarquía político-religiosa en Tonina durante el reinado de K'ihnich Bahlam Chapaht resultado del análisis de estos dos monumentos.
The Maya Codex Dataset contains high-quality representation of Maya hieroglyph data, extracted fr... more The Maya Codex Dataset contains high-quality representation of Maya hieroglyph data, extracted from the three surviving ancient Maya codices (the Dresden, Madrid and Paris codices). A statistical glyph co-occurrence model, which is extracted from the Thompson catalog, is also included.
This brief note is aimed to present a fragment of a hitherto unpublished Late Classic Maya relief... more This brief note is aimed to present a fragment of a hitherto unpublished Late Classic Maya relief carving (Figures 1 and 2) in the collection of La Ruta Maya Foundation, Guatemala (Registro de Bienes Culturales [Registry of Cultural Heritage] Inv.-No. 1.2.179.85).
During the past decade the corpus of inscriptions pertaining to the Baax Witz court of Xultun has... more During the past decade the corpus of inscriptions pertaining to the Baax Witz court of Xultun has been significantly amplified thanks to recent archaeological investigations as well as newly identified polychrome vessels with dedicatory texts in private and institutional collections. Here we present two heretofore unpublished polychrome vessels of unknown provenance, both of which can be ascribed to the pottery workshops of Xultun. One of these vessels provides us with additional evidence for Ix Yax We'n Chaak, a female ruler whose existence has just recently been revealed thanks to new in situ finds. The other fragmented vessel can, by means of a comparative analysis, stylistically be attributed to a Late Classic palace workshop of Xultun that operated during the reign of Yax We'n Chan K'inich.
El informe presentado resume los resultados en excavaciones del altar 11 el sitio Ch´anal in Guat... more El informe presentado resume los resultados en excavaciones del altar 11 el sitio Ch´anal in Guatemala durante la temporada de investigacion del 2013.
La figura de Aj Ch’aaj Naah es sin lugar a duda una de las mas destacadas en la historia de los f... more La figura de Aj Ch’aaj Naah es sin lugar a duda una de las mas destacadas en la historia de los funcionarios Aj K’uhuun de Tonina. No obstante ser una figura politico-religiosa muy bien identificada en la literatura academica sobre esta ciudad, era poca la informacion con la que contabamos acerca de el. Sin embargo, gracias a la reciente recuperacion de dos nuevos monumentos, ahora podemos enriquecer aspectos antes desconocidos no solo de la vida de Aj Ch’aaj Naah sino tambien relativos a la complejidad y particularidades del cargo de Aj K’uhuun en Tonina.
We analyze the performance of deep neural architectures for extracting shape representations of b... more We analyze the performance of deep neural architectures for extracting shape representations of binary images, and for generating low-dimensional representations of them. In particular, we focus on indexing binary images exhibiting compounds of Maya hieroglyphic signs, referred to as glyph-blocks, which constitute a very challenging dataset of arts given their visual complexity and large stylistic variety. More precisely, we demonstrate empirically that intermediate outputs of convolutional neural networks can be used as representations for complex shapes, even when their parameters are trained on gray-scale images, and that these representations can be more robust than traditional handcrafted features. We also show that it is possible to compress such representations up to only three dimensions without harming much of their discriminative structure, such that effective visualization of Maya hieroglyphs can be rendered for subsequent epigraphic analysis.
ABSTRACT We present an overview of the MAAYA project (http://www.idiap.ch/project/maaya/), an int... more ABSTRACT We present an overview of the MAAYA project (http://www.idiap.ch/project/maaya/), an interdisciplinary effort integrating the work of epigraphists and computer scientists with three goals: (1) Design and development of computational tools for visual analysis and information management that effectively support the work of Maya hieroglyphic scholars; (2) Advancement of the state of Maya epigraphy through the coupling of expert knowledge and the use of these tools; and (3) Design and implementation of an online system that supports search and retrieval, annotation, and visualization tasks.
Proceedings of the ACM International Conference on Multimedia - MM '14, 2014
We propose an automatic Maya hieroglyph retrieval method integrating shape and glyph context info... more We propose an automatic Maya hieroglyph retrieval method integrating shape and glyph context information. Two recent local shape descriptors, Gradient Field Histogram of Orientation Gradient (GF-HOG) and Histogram of Orientation Shape Context (HOOSC), are evaluated. To encode the context information, we propose to convert each Maya glyph block into a first-order Markov chain and apply the co-occurrence of neighbouring glyphs. The retrieval results obtained based on visual matching are therefore re-ranked. Experimental results show that our method can significantly improve the glyph retrieval accuracy even with a basic co-occurrence model. Furthermore, two unique glyph datasets are contributed which can be used as novel shape benchmarks in future research.
El gobierno de K'ihnich Bahlam Chapaht corresponde a uno de los más longevos de todos los gob... more El gobierno de K'ihnich Bahlam Chapaht corresponde a uno de los más longevos de todos los gobernantes conocidos de Tonina. Con excepción de su nacimiento y entronización, conocidos por referencias retrospectivas muy reiteradas, es poco lo que se conoce de su vida. Sin embargo, gracias al recientemente restaurado Monumento 181 y al altar identificado como Monumento 182, hemos logrado reconstruir pormenores adicionales de su gobierno. En el presente ensayo, presentamos nuevos datos sobre ritualidad y jerarquía político-religiosa en Tonina durante el reinado de K'ihnich Bahlam Chapaht resultado del análisis de estos dos monumentos.
The Maya Codex Dataset contains high-quality representation of Maya hieroglyph data, extracted fr... more The Maya Codex Dataset contains high-quality representation of Maya hieroglyph data, extracted from the three surviving ancient Maya codices (the Dresden, Madrid and Paris codices). A statistical glyph co-occurrence model, which is extracted from the Thompson catalog, is also included.
This brief note is aimed to present a fragment of a hitherto unpublished Late Classic Maya relief... more This brief note is aimed to present a fragment of a hitherto unpublished Late Classic Maya relief carving (Figures 1 and 2) in the collection of La Ruta Maya Foundation, Guatemala (Registro de Bienes Culturales [Registry of Cultural Heritage] Inv.-No. 1.2.179.85).
During the past decade the corpus of inscriptions pertaining to the Baax Witz court of Xultun has... more During the past decade the corpus of inscriptions pertaining to the Baax Witz court of Xultun has been significantly amplified thanks to recent archaeological investigations as well as newly identified polychrome vessels with dedicatory texts in private and institutional collections. Here we present two heretofore unpublished polychrome vessels of unknown provenance, both of which can be ascribed to the pottery workshops of Xultun. One of these vessels provides us with additional evidence for Ix Yax We'n Chaak, a female ruler whose existence has just recently been revealed thanks to new in situ finds. The other fragmented vessel can, by means of a comparative analysis, stylistically be attributed to a Late Classic palace workshop of Xultun that operated during the reign of Yax We'n Chan K'inich.
El informe presentado resume los resultados en excavaciones del altar 11 el sitio Ch´anal in Guat... more El informe presentado resume los resultados en excavaciones del altar 11 el sitio Ch´anal in Guatemala durante la temporada de investigacion del 2013.
La figura de Aj Ch’aaj Naah es sin lugar a duda una de las mas destacadas en la historia de los f... more La figura de Aj Ch’aaj Naah es sin lugar a duda una de las mas destacadas en la historia de los funcionarios Aj K’uhuun de Tonina. No obstante ser una figura politico-religiosa muy bien identificada en la literatura academica sobre esta ciudad, era poca la informacion con la que contabamos acerca de el. Sin embargo, gracias a la reciente recuperacion de dos nuevos monumentos, ahora podemos enriquecer aspectos antes desconocidos no solo de la vida de Aj Ch’aaj Naah sino tambien relativos a la complejidad y particularidades del cargo de Aj K’uhuun en Tonina.
We analyze the performance of deep neural architectures for extracting shape representations of b... more We analyze the performance of deep neural architectures for extracting shape representations of binary images, and for generating low-dimensional representations of them. In particular, we focus on indexing binary images exhibiting compounds of Maya hieroglyphic signs, referred to as glyph-blocks, which constitute a very challenging dataset of arts given their visual complexity and large stylistic variety. More precisely, we demonstrate empirically that intermediate outputs of convolutional neural networks can be used as representations for complex shapes, even when their parameters are trained on gray-scale images, and that these representations can be more robust than traditional handcrafted features. We also show that it is possible to compress such representations up to only three dimensions without harming much of their discriminative structure, such that effective visualization of Maya hieroglyphs can be rendered for subsequent epigraphic analysis.
ABSTRACT We present an overview of the MAAYA project (http://www.idiap.ch/project/maaya/), an int... more ABSTRACT We present an overview of the MAAYA project (http://www.idiap.ch/project/maaya/), an interdisciplinary effort integrating the work of epigraphists and computer scientists with three goals: (1) Design and development of computational tools for visual analysis and information management that effectively support the work of Maya hieroglyphic scholars; (2) Advancement of the state of Maya epigraphy through the coupling of expert knowledge and the use of these tools; and (3) Design and implementation of an online system that supports search and retrieval, annotation, and visualization tasks.
Proceedings of the ACM International Conference on Multimedia - MM '14, 2014
We propose an automatic Maya hieroglyph retrieval method integrating shape and glyph context info... more We propose an automatic Maya hieroglyph retrieval method integrating shape and glyph context information. Two recent local shape descriptors, Gradient Field Histogram of Orientation Gradient (GF-HOG) and Histogram of Orientation Shape Context (HOOSC), are evaluated. To encode the context information, we propose to convert each Maya glyph block into a first-order Markov chain and apply the co-occurrence of neighbouring glyphs. The retrieval results obtained based on visual matching are therefore re-ranked. Experimental results show that our method can significantly improve the glyph retrieval accuracy even with a basic co-occurrence model. Furthermore, two unique glyph datasets are contributed which can be used as novel shape benchmarks in future research.
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