Forest variables are typically surveyed using sample plots, from which parameters for large
areas are estimated. The diameter at breast height (DBH) is one of the main variables …

The aim of this paper is to present results achieved with a 3D terrestrial calibration field,
designed for calibrating digital cameras and omnidirectional sensors. This terrestrial …

Fisheye lens cameras enable to increase the Field of View (FOV), and consequently they
have been largely used in several applications like robotics. The use of this type of cameras …

A technique for the reconstruction of cylindrical surfaces using optical images with an
extension of least squares matching is presented. This technique is based on stereo-image …

Lightweight hyperspectral cameras based on frame geometry have been used for several
applications in unmanned aerial vehicles (UAVs). The camera used in this investigation is …

This paper presents an experimental assessment of photogrammetric targets and subpixel
location techniques to be used with low contrast images such as images acquired by …

Informações de controle terrestre são fundamentais para as aplicações fotogramétricas.
Independentemente do tipo de controle utilizado, um passo interativo é ainda exigido para …

The determination of the Diameter at Breast Height (DBH) is an important variable that
contributes to several studies on forest, eg, environmental monitoring, tree growth, volume of …

Fisheye lens cameras enable to increase the Field of View (FOV), and consequently they
have been largely used in several applications like robotics. The use of this type of cameras …

As câmaras digitais modernas, independente de sua geometria, possuem sensores a base
de elementos semicondutores que são, por natureza, influenciados por mudanças de …