The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Zusammenfassung. Es wird eine Abbildung untersucht, die jedem Dreieck der euklidischen Ebene einen Punkt des euklidischen Raumes zuordnet. Gewisse Mengen von Dreiecken lassen sich so in anschaulicher Weise als Punktmengen des Raumes darstellen und untersuchen. Eine Modifikation der betrachteten Abbildung ordnet jedem Dreieck der quiformen Ebene einen Punkt der hyperbolischen Ebene zu. Schlielich werden...
Summary. As Ullman (1979) showed, an object can be reconstructed uniquely from three orthographic views, if at least four homologous tripels of points are known. If only three homologous tripels of points are observed, the reconstruction problem has a finite number of solutions (cf. Huang and Lee (1989)). In this article the 3-point-problem is reduced to a quadratic problem: If the squares of the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.