6 resultados para Tecnologías 3D

em SAPIENTIA - Universidade do Algarve - Portugal


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The algorithm developed uses an octree pyramid in which noise is reduced at the expense of the spatial resolution. At a certain level an unsupervised clustering without spatial connectivity constraints is applied. After the classification, isolated voxels and insignificant regions are removed by assigning them to their neighbours. The spatial resolution is then increased by the downprojection of the regions, level by level. At each level the uncertainty of the boundary voxels is minimised by a dynamic selection and classification of these, using an adaptive 3D filtering. The algorithm is tested using different data sets, including NMR data.

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En las escuelas portuguesas se han implementado en los últimos años importantes programas de equipamiento y de formación de profesores en Tecnologías de la Información y Comunicación (TIC). La utilización de las tecnologías en contextos educativos, gana todos los días nuevos adeptos entre el profesorado, a pesar de las desconfianzas y de las limitaciones financieras de los centros educativos. La llegada de Internet a la sala de aula, podrá constituir un importante recurso de manera a posibilitar nuevos caminos en la enseñanza y el aprendizaje. Es desde esta perspectiva, que hemos intentado comprender cómo solucionan los profesores los problemas involucrados con la utilización de los nuevos medios que complejizan la sala de aula y con las actividades y estrategias propuestas y realizadas con los alumnos. Cierto es, que continúan a ser casos puntuales, las experiencias hechas por profesores con las TIC en la sala de aula, pero es interesante observar, que a pesar de los esfuerzos en la innovación, continúan a existir asimismo algunas dificultades en adaptar los nuevos medios a las nuevas pedagogías.

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Tecnologías de Información y Comunicación en Aulas de Artes Visuales. La acción con profesores de la Educación Básica y Secundaria en Loulé, provincia de Algarve, Portugal.

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Empirical studies concerning face recognition suggest that faces may be stored in memory by a few canonical representations. In cortical area V1 exist double-opponent colour blobs, also simple, complex and end-stopped cells which provide input for a multiscale line/edge representation, keypoints for dynamic routing and saliency maps for Focus-of-Attention. All these combined allow us to segregate faces. Events of different facial views are stored in memory and combined in order to identify the view and recognise the face including facial expression. In this paper we show that with five 2D views and their cortical representations it is possible to determine the left-right and frontal-lateral-profile views and to achieve view-invariant recognition of 3D faces.

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Empirical studies concerning face recognition suggest that faces may be stored in memory by a few canonical representations. In cortical area V1 exist double-opponent colour blobs, also simple, complex and end-stopped cells which provide input for a multiscale line/edge representation, keypoints for dynamic feature routine, and saliency maps for Focus-of-Attention.

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Dissertação de mest., Produção, Edição e Comunicação de Conteúdos (Comunicação Multimédia), Faculdade de Ciências Humanas e Sociais, Univ. do Algarve, 2012