Bayesian classification of digital images by web application

The contribution introduces web application for image classification that has been developed at the Research Institute of Geodesy, Topography and Cartography in the framework of grant project InGeoCalc (supported by Ministry of education of the Czech Republic). The web application is aimed to display, examine and classify digital image data. The data are expected to be obtained from Internet by means of Web Map Services (WMS) or from other sources (possibly non-registered). Image data from different sources can be combined and presented as composition of layers (coverage) with adjustable degrees of transparency. After gathering the data, Bayesian (supervised) classification is applied to distinguish separate regions in the image. User can choose between several classification methods and adjust pertinent parameters. Furthermore, several subsequent basic analytical tools are offered, namely computation of distances, areas or perimeters related to the classified regions, simple statistical summaries about classification results (e.g. distribution of classes, percentage of non-classified regions, etc.). The classification results and registration parameters can be saved for further use. The web application is based on common Internet standards (HTML, Javascript, SVG). The only requirement for running the application is an up-to-date Internet browser supporting SVG (Scalable Vector Graphics). Typical usage of the web application can involve land cover mapping based on satellite or aerial images. The application is available free of charge for any Internet user

THE PROCESS OF DIGITIZING OF OLD GLOBE

This paper describes the process of digitalization of old globes that brings with it the possibility to use globes in their digital form. Created digital models are available to the general public through modern technology in the Internet network. This gives an opportunity to study old globes located in various historical collections, and prevent damage of the originals. Another benefit of digitization is also a possibility of comparing different models both among themselves and with current map data by increasing the transparency of individual layers. Digitization is carried out using special device that allows digitizing globes with a diameter ranging from 5 cm to 120 cm. This device can be easily disassembled, and it is fully mobile therefore the globes can be digitized in the place of its storage. Image data of globe surface are acquired by digital camera firmly fastened to the device. Acquired image data are then georeferenced by using a method of complex adjustment. The last step of digitization is publication of the final models that is realized by two ways. The first option is in the form of 3D model through JavaScript library Cesium or Google Earth plug-in in the Web browser. The second option is as a georeferenced map using Tile Map Service

SYMPHONIE EN SI BEMOL MAJEUR POUR ORCHESTRE A CORDES / Jiri Antonin BENDA ; l'Orchestre Philharmonique Tchèque dir. Vaclav TALICH. SYMPHONIE EN RE MAJEUR / Frantisek Vaclav MICA ; l'Orchestre Symphonique de Prague (F.O.K.) dir. Dr Vaclav SMETACEK. SYMPHONIE EN LA MAJEUR : "PRINTEMPS" / Jan Vaclav STAMIC ; l'Orchestre de Chambre de Prague dir. Otakar TRHLIK. SYMPHONIE EN RE MAJEUR / Josef MYSLIVECEK ; l'Orchestre de Chambre de Prague dir. Martin TURNOVSKY

BnF-Partenariats, Collection sonore - BelieveContient une table des matière