Search results for "IMAGES"

SVG rendering for internet imaging

2006

The SVG (scalable vector graphics) standard allows representing complex graphical scenes by a collection of graphic vectorial-based primitives, offering several advantages with respect to classical raster images such as: scalability, resolution independence, etc. In this paper we present a full comparison between some advanced raster to SVG algorithms: SWaterG, SVGenie, SVGWave and some commercial tools. SWaterG works by a watershed decomposition coupled with some ad-hoc heuristics, SVGenie and SVGWave use a polygonalization based respectively on data dependent and wavelet triangulation. The results obtained by SWaterG, SVGenie and SVGWave are satisfactory both in terms of perceptual measur…

Stereoscopic 3D visualization of particle fields reconstructed from digital inline holograms

2010

Abstract Holography is a powerful tool as it codes information, e.g. on 3D positions in a particle field in a single 2D hologram. In digital holography, the holograms are recorded on a digital image sensor. It is a particular challenge to visualize a digital hologram's depth information, such that it can be understood intuitively while retaining the advantages of a numerical reconstruction. In this contribution it is suggested and demonstrated how a numerically constructed volume can be used to calculate stereoscopic views, which even in the case of non-diffuse illumination allow for an intuitive visualization of particles’ positions in 3D space.

Guest Editorial Three-Dimensional Displays and Visualization

2010

THREE-DIMENSIONAL (3D) imaging and display is a natural concept for humans as it is a common vision attribute of our binocular vision, perception, and brain processing. However, until recently, our experiences have been mainly limited to the technologically inferior two-dimensional (2D) as evidenced from widespread use of 2D photography, cinema, and liquid crystal or LED-display for television, computer displays, etc.

Artificial mosaics

2005

Art often provides valuable insight that can be applied to technological innovations, especially in the fields of image processing and computer graphics. In this paper we present a method to transform a raster input image into a good-quality mosaic: an “artificial mosaic.” The creation of mosaics of artistic quality is challenging because the tiles that compose a mosaic, typically small polygons, must be packed tightly and yet must follow and emphasize orientations chosen by the artist. The proposed method can reproduce the colors of the original image and emphasize relevant boundaries by placing tiles along edge directions. No user intervention is needed to detect the boundaries: they are …

Cloud screening and multitemporal unmixing of MERIS FR data

2007

The operational use of MERIS images can be hampered by the presence of clouds. This work presents a cloud screening algorithm that takes advantage of the high spectral and radiometric resolutions of MERIS and the specific location of some of its bands to increase the cloud detection accuracy. Moreover, the proposed algorithm provides a per-pixel probabilistic map of cloud abundance rather than a binary cloud presence flag. In order to test the proposed algorithm we propose a cloud screening validation method based on temporal series. In addition, we evaluate the impact of the cloud screening in a multitemporal unmixing application, where a temporal series of MERIS FR images acquired over Th…

Graph cut-based method for segmenting the left ventricle from MRI or echocardiographic images

2017

International audience; In this paper, we present a fast and interactive graph cut method for 3D segmentation of the endocardial wall of the left ventricle (LV) adapted to work on two of the most widely used modalities: magnetic resonance imaging (MRI) and echocardiography. Our method accounts for the fundamentally different nature of both modalities: 3D echocardiographic images have a low contrast, a poor signal-to-noise ratio and frequent signal drop, while MR images are more detailed but also cluttered and contain highly anisotropic voxels. The main characteristic of our method is to work in a 3D Bezier coordinate system instead of the original Euclidean space. This comes with several ad…

Principales acciones y programas creados y desarrollados durante el sexenio (1985-1991)

1991

Zeitgeist et "Esprit des profondeurs" dans les images du Livre Rouge

2014

Le Livre Rouge apporte des éléments nouveaux sur le rapport de Jung à l’art pictural. L’étude se propose de replacer et d’étudier les images du Livre Rouge dans le contexte des discours sur l’art de l’époque. Pour ce faire, on s’intéressera dans un premier temps à la réception par Jung du discours sur « Abstraction et Einfühlung » de Worringer dans les Types psychologiques et à l’expérience de la « tentation » esthétique, faite par Jung dans Le Livre Rouge. On s’intéressera ensuite au discours des peintres expressionnistes, en particulier du mouvement du Cavalier bleu (Der Blaue Reiter) et on soulignera certaines similarités de fond et de forme avec les images du Livre Rouge. La conclusion …

Contents of Physical Education through the Images of PrimaryEducation Textbooks

2014

Esta investigación analiza las imágenes relacionadas con las actividades físicas que aparecen en los libros de texto de educación física (EF), concretamente en el tercer ciclo de la etapa de educación primaria (EP) y su correspondencia con los bloques de contenido de dicho currículo. La muestra está formada por 821 imágenes publicadas en cuatro editoriales españolas, a partir de la LOE. Se realiza un estudio descriptivo univariante mediante un sistema de categorías elaborado ad hoc, cuyo proceso de construcción consta de dos pruebas piloto, dos consultas a expertos y la triangulación con tres observadores. Las variables del estudio son: tipo de actividad física, ámbito, espacio y nivel de p…

Le flair en images, ou comment est donnée à voir la communication olfactive

2016

How is the action of sniffing others, which has been depreciated by good manners and aesthetic standards, represented in pictures? In unveiling the theme of social sniffing, this essay aims to track variations around the odour of the body and olfactory communication in Western visual arts. This issue implies to examine the social roles of sui generis as well as artefactual human odours, and to assess figurative arts as a means to unveil historical trends in the forms and functions of the sense of smell in our culture. The corpus of figurative works consulted, far from exhaustive, stretches from medieval and classical allegories of smell to the visual language of perfume advertisements, thro…