Three important stages within automated 3D object reconstruction via multi-image convergent photogrammetry are image preprocessing, interest point detection for feature-based matching and triangular mesh generation. This paper investigates approaches to each of these. The Wallis filter is initially examined as a candidate image pre-processor to enhance the performance of the FAST interest point...

Recently, there has been an increasing interest in utilizing imagery in different fields such as archaeology, architecture, mechanical inspection and biometric identifiers where face recognition considered as one of the most important physiological characteristics that is related to the shape and geometry of the faces and used for identification and verification of a person's identity. In this ...

Various versions of LIDAR scanners (satellite-borne, airborne, and terrestrial) are perceived as fast and reliable technologies for direct acquisition of spatial data about the objects of interest. Compared to other measurement methods (e.g., photogrammetric manipulation of imagery), the equipment used for such scanners is still multi-part, bulky, and expensive. Moreover, ground-based LIDAR sca...

The paper describes the first results about a study on the measurement of paintings surface deformation. The study was carried out using one ancient painting model made in a restoration laboratory and consolidated with the materials and dilutions most frequently used in the field of conservation. The restorers suppose deformations of the paintings surface from 0.1 mm to some millimetre when the...

This presentation offers some thoughts on the emergence (that is essentially to say the commercial acceptance and exploitation) of close range digital photogrammetric systems. The discussion is restricted to systems based on standard photogrammetric processes involving digital frame imagery. Systems are classified into three tiers which are distinguished not only by accuracy and cost, but also ...

In Aerial Photogrammetry some tools are available to simplify the aerial mapping planning and make it faster. In particular, once defined the scale of the map, witch is related to the Spatial Resolution (SR), diagrams are available to provide the average scale of photogram and the flying height for different focal length values. Terrestrial Photogrammetry is deficient in this kind of tools, pro...