Search results for "Images"
showing 10 items of 460 documents
Modélisation d'images agronomiques - application a la reconnaissance d'adventices par imagerie pour une pulvérisation localisée
2009
Plant (crop and weed) identification is a very active field of research in agriculture since the reinforcement of European laws about pesticide applications for a site-specific management of spraying practices. A new crop/weed simulation model was developed to allow the evaluation of crop/weed spatial identification methods from imaging. Considering multiples agronomic parameters – crop location, weed infestation rate, weed spatial distribution – the first step of this model allows the simulation of an infested crop field. Then, in a second step, a world to camera transformation is applied to allow every kind of picture (with or without perspective effect). The validation of this model was …
Sex and race stereotypes in images of textbooks in primary physical education
2013
El objetivo de este trabajo es analizar las imágenes que aparecen en los libros de texto de Educación Física en el tercer ciclo de Educación Primaria y comprobar si los estereotipos con respecto al género y la raza han sido eliminados en sus contenidos. Se realiza un estudio descriptivo que utiliza el análisis de contenido como técnica central de la investigación. La muestra está formada por 997 imágenes, pertenecientes a cinco editoriales diferentes (Anaya, Inde, Paidotribo, Bruño y Serbal) que han publicado sus libros de texto a partir de la actual Ley de Educación 2/2006. Para el análisis de las imágenes, se utilizó el sistema de categorías elaborado por Táboas (2009), en un estudio simi…
Diseño, fiabilidad y validez de una herramienta para el análisis de las imágenes de los libros de texto de Educación Física
2018
Esta investigación tiene como objetivo diseñar una herramienta, a partir de dos sistemas de categorías validados previamente, que pudiera analizar las imágenes impresas en los libros de texto de Educación Física (EF) en la etapa de Educación Primaria. Para ello se desarrolló SAIMEF (Sistema de Análisis de Imágenes en Educación Física), una aplicación php diseñada ad hoc, que facilita el acceso al sistema y minimiza los errores de análisis. La herramienta consta de dos sistemas de categorías para el análisis: SC-I para las imágenes en las que aparece la figura humana realizando actividad física (con 72 indicadores) y SC-II para el resto de las imágenes (con 47 indicadores). La validez del si…
Immagini devote del popolo indiano
2008
This volume, with the preface by Giovanni Filoramo, collects some of the sacred images of "Hinduism" of other religions born in India (Shikism, Buddhism), exhibited during the exhibition of the same name at the Antonio Pasqualino International Puppet Museum from November 22 to December 31. 2007. These cult images are venerated in temples, in private homes and on the streets throughout India. The central idea was to show the iconographic path that these paintings (or photographs) have had in the popular imagination. An informative caption corresponds to each "portrait".
Retinal Fundus Multi-Disease Image Dataset (RFMiD): A Dataset for Multi-Disease Detection Research
2021
The world faces difficulties in terms of eye care, including treatment, quality of prevention, vision rehabilitation services, and scarcity of trained eye care experts. Early detection and diagnosis of ocular pathologies would enable forestall of visual impairment. One challenge that limits the adoption of computer-aided diagnosis tool by ophthalmologists is the number of sight-threatening rare pathologies, such as central retinal artery occlusion or anterior ischemic optic neuropathy, and others are usually ignored. In the past two decades, many publicly available datasets of color fundus images have been collected with a primary focus on diabetic retinopathy, glaucoma, age-related macular…
A text based indexing system for mammographic image retrieval and classification
2014
Abstract In modern medical systems huge amount of text, words, images and videos are produced and stored in ad hoc databases. Medical community needs to extract precise information from that large amount of data. Currently ICT approaches do not provide a methodology for content-based medical images retrieval and classification. On the other hand, from the Internet of Things (IoT) perspective, the ICT medical data can be produced by several devices. Produced data complies with all Big Data features and constraints. The IoT guidelines put at the center of the system a new smart software to manage and transform Big Data in a new understanding form. This paper describes a text based indexing sy…
Three-Dimensional Imaging and Display through Integral Photography
2014
Here, we present a review of the proposals and advances in the field of three-dimensional (3D) imaging acquisition and display made in the last century. The most popular techniques are based on the concept of stereoscopy. However, stereoscopy does not provide real 3D experience, and produces discomfort due to the conflict between convergence and accommodation. For this reason, we focus this paper on integral imaging, which is a technique that permits the codification of 3D information in an array of 2D images obtained from different perspectives. When this array of elemental images is placed in front of an array of microlenses, the perspectives are integrated producing 3D images with full p…
Microscopic and macroscopic 3D imaging and display by integral imaging
2011
Integral imaging is a rising 3D imaging technique that can be considered the incoherent version of holography. In integral imaging the multiperspective information of 3D scenes is stored in a 2D picture. Such picture, composed by a set of elemental images, is obtained through a 2D array of microlenses. The elemental-images set can be used for many purposes. One is the display of 3D color scenes to audiences or much more than one person. Other is the 3D display, with full parallax, in personal monitors, like the screen of a smartphone, a tablet, or the monitor used by a surgeon in an endoscopic operation. Other important types of applications are connected with the topographic reconstruction…
Full-parallax immersive 3D display from depth-map cameras
2016
We exploit two different versions of the Kinect to make comparison of three-dimensional (3D) scenes displayed by proposed integral imaging (InI) display system. We attempt to show the difference between each version specifications and capacity. Furthermore, we illustrate our study result with some empirical imaging experiment in which the final result are displayed with full-parallax. Each demonstrated integral images can provide clear comparison results to the observer.