In this paper, there is introduced an approach to surface reconstruction of an object captured by one grayscale camera with a small resolution. The proposed solution expects a rectangular grid being projected onto the object and the camera capturing the situation from position different to the grid projector position. The crucial part of the method is exact detection of the grid. The structure of the grid is identified by the centers of the inner space between its lines. The reconstruction process itself is based on a simple math of perspective projection of the captured image. Due to the small resolution of the image some errors arise during object surface reconstruction. We proposed a correction of the calculated coordinates, which is a simple one-dimensional function depending on the distance from the camera. The method performs very well as the results in conjunction with the precision evaluation indicate at the end of the paper.
Der Beitrag geht der Frage nach, ob und wie biometrische Eigenschaften (Fingerabdruck und Stimme) als "biometrischer Schlüssel" für die Kryptografie verwendet werden können. Dazu ist es wesentlich, Merkmale zu wählen, die sowohl über ausreichende Entropie als auch genügend "Stabilität" verfügen, um die Wiedergewinnung des Schlüsselmaterials sicher zu stellen.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.