To maintain robot accuracy, calibration equipment is needed. In this paper we present a self-calibrating measuring system based on a camera in the robot hand plus a known reference object in the robot workspace. A collection of images of the reference object is obtained. From these we compute the positions and orientations of the camera, using image-processing, image-recognition and photogramme...

Abstract. The image orientation (or Structure from Motion – SfM) process needs well localized, repeatable and stable tie points in order to derive camera poses a sparse 3D representation of the surveyed scene. accurate identification large datasets is still an open research topic photogrammetric computer vision communities. Tie are established by firstly extracting keypoint using hand-crafted f...

Getting 3D information from 2D images depends on the appropriate camera calibration of the internal and external CCD (Charge Couple Device) camera parameters. The photogrammetric camera calibration technique needs a set of world coordinates and their corresponding calibration object image coordinates as an input. During this work we developed an algorithm to detect the image coordinates of a ca...

Abstract This article presents a methodology for the 3D reconstruction of welds under water. A monocular measuring system, equipped with hemispherical (dome) port, and its are introduced. Furthermore, simple but effective approach alignment dome port entrance pupil lens is presented. The mechanically supported by presented shell. Turbidity experiments in laboratory quantify accuracy an underwat...

Unmanned Aerial Vehicle (UAV) systems offered many advantages in several mapping applications such as slope mapping, geohazard studies, etc.This study utilizes UAV system for large scale stream mapping by using digital camera attached to the UAV.The digital camera combined with the UAV form a data acquisition system. This study only concentrates on one type of rotor wing UAV. It is becaue rotor...

Today’s developments in industrial robots focus on aims like gain of flexibility, improvement of the interaction between robots and reduction of down-times. A very important method to achieve these goals are off-line programming techniques. In contrast to conventional teach-in robot programming techniques, where sequences of actions are defined step-by-step via remote control on the real object...

The digital stereo and multispectral imaging system Digital Photogrammetry Assembly (DPA) was developed for airborne photogrammetric and thematic mapping. Its special feature is the simultaneous image acquisition of high resolution (~0.2m ground pixel size) panchromatic imagery with multispectral data (~0.4m ground pixel extension). This combination delivers for the first time geometric and the...