3D-city models are becoming an important tool for town planning. Photogrammetry appears to provide the only economic means to acquire truly 3D city data. The paper discusses the current status of automatic and semiautomatic acquisition method. Research in automatic methods for building extraction being increasingly intensive in the last few years has lead to promising results, however, still la...

In this work an automated traffic analysis in aerial image sequences recorded by an unmanned aerial vehicle (UAV) has been developed, which provides the trajectories of the vehicles especially during overtaking. Methods of photogrammetry and image processing are used to detect the vehicles and to determine and track their positions. Camera calibration is necessary in order to transform image co...

Archaeological excavations are often irreversibly destructive, so it is important to accompany them with detailed documentation reflecting the accumulated knowledge of the excavation site. This documentation is usually iconographic and textual. Graphical representations of archaeological sites such as drawings, sketches, watercolors, photographs, topography, and photogrammetry are indispensable...

Photogrammetry uses photographic cameras to obtain information about the 3D world. The basic principle of photogrammetric measurement is straightforward: recording a light ray in a photographic image corresponds to observing a direction from the camera to the 3D scene point where the light was reflected or emitted. From this relation, procedures have been derived to orient cameras relative to e...

Today’s speed of image processing tools as well as the availability of robust techniques for extracting geometric and basic thematic information from image streams makes real-time photogrammetry possible. The paper discusses the basic tools for fully automatic calibration, orientation and surface recontruction as well as for tracking, ego-motion determination and behaviour analysis. Examples de...

The term “integration” can be defined as the fusion of two separate entities, resulting in a new entity. Integrating laser scanning with photogrammetry allows us to compensate for the individual weaknesses of each method alone, thus providing more accurate modelling, interpretation and classification of the surroundings. Laser scanners produce data that can vary in terms of point density, field...

In this article, we present results that demonstrate the utility of close range photogrammetry in the measurement of decks in recreational craft as an alternate measurement system to the one based on direct acquisition of coordinates. The areas of deck covered with teakwood for aesthetic or security reasons were measured. Both methods were compared in terms of precision of measurements, time co...

Internet offers a new direction for software development and also for photogrammetry. The affordable commercial digital cameras are widely available and their geometrical resolution is good enough to perform photogrammetric measurements. Seeing this, a widely accessible, web based photogrammetry application could be a new development direction for photogrammetry. For photogrammetric calculation...

Photography is a 2-dimensional medium which represents 3-dimensional space, as a central projection on a plane. As it is possible to represent 3D space by a photograph, it is also possible, using mathematical methods, to obtain data about 3-dimensional structures from the data registered on photographs. We used two methods to obtain spatial data from photographs: restitution of perspective imag...

Recently, the documentation and visualization of various cultural assets have been receiving attention. For example, a small Buddha less than 10 cm in height and located in the womb of a larger Buddha is considered as a cultural asset. In this study, the authors have considered the use of macro lens to perform digital very close range photogrammetry for small objects. It was demonstrated that a...