SUMMARY Automatic optimum network design for measuring complex industrial objects by vision metrology systems is a real challenge. In the absence of 3D simulated CAD models of the complex objects along with the absence of workspace information, several uncertain parameters are introduced into the camera placement decision-making process. These uncertain factors include the vision constraints su...

We describe a system that computes the three-dimensional (3D) shape of a spacecraft from a sequence of uncalibrated, two-dimensional images. While the mathematics of multi-view geometry is well understood, building a system that accurately recovers 3D shape from real imagery remains an art. A novel aspect of our approach is the combination of algorithms from computer vision, photogrammetry, and...

The sample design of the USDA Forest Service's Forest Inventory and Analysis Program (FIA) with respect to a three-dimensional population (forest area X time) of tree attributes is formally defined and evaluated. The definitions for both the traditional components of growth, as presented by Meyer (1953, Forest Mensuration), and a discrete analog to the time invariant redefinition of the compone...

While magnetic resonance imaging (MRI) is the gold-standard imaging modality for diagnosis of intracranial neoplasia, computed tomography (CT) remains commonly used for diagnosis and therapeutic planning in veterinary medicine. Despite the routine use of both imaging modalities, comparison of CT and MRI has not been described in the canine patient. A retrospective study was performed to evaluat...

A new computerised method of measurement of the anterior chamber in the human eye is described. Photographs of the anterior chamber were taken with a Zeiss slit-lamp 75-SL and converted from an optical image into a true image by computer with a digitiser. We obtained data on both the anterior chamber volume and also the anterior chamber depth, peripheral anterior chamber volume, the diameter of...

We show, through correlation of fetal, neonatal, and necropsy brain sonography, that the three-parallel-echogenic-line configuration classically thought to represent fetal lateral ventricular margins on high axial images are actually extraventricular, lying within cerebral white matter. Accurate sonographic identification of fetal hydrocephalus is essential for appropriate patient management. B...

This paper shows the current efforts in order to develop a digital photogrammetric softcopy kit which intends to provide a link between theory and practice in the field of Photogrammetry. These efforts have started in 2002, with the development of the first modules of the E-Foto kit: image viewer, project configuration, camera parameters, interior orientation and digital mensuration. The projec...

In recent years, portable laser scanning devices and their applications in the context of forest mensuration have undergone rapid methodological technological developments. Devices become smaller, lighter, more affordable, whereas new data-driven methods software packages facilitated derivation information from point clouds. Thus, terrestrial (TLS) is now well established, laser–object interact...

Forest mensuration remains critical in managing our forests sustainably, however, capturing such measurements costly, time-consuming and provides minimal amounts of information as diameter at breast height (DBH), location, height. Plot scale remote sensing techniques show great promise extracting detailed forest rapidly cheaply, they have been held back from large-scale implementation due to th...

The purpose of this note is to present a simple formula for the area of the medial parallelogram of a tetrahedron in terms of the lengths of the six edges, together with its derivation. It is not claimed that this formula is original, though diligent searches of standard sources of mensuration formulae, and inquiries to mathematicians in a variety of fields suggest that it is not generally know...