A large percentage of farmers do not respond to mail surveys. To gain insight into why farmers do not respond and how to improve response rates, a three-step research design was developed. First, an initial survey, based on in-person interviews with 15 farmers, was sent to 100 farmers. Second, farmers who did not respond to this mail survey were contacted by phone to investigate the reasons for...

We present a novel system for surveying apple orchards by counting apples and estimating apple diameters. Existing surveying systems resort to active sensors, or high-resolution close-up images under controlled lighting conditions. The main novelty of our system is the use of a traditional low resolution stereo-system mounted on a small aerial vehicle. Vision processing in this set up is challe...

This paper describes a mobile augmented reality approach for on-site 3D visualization of underground infrastructure networks. The visualizations are automatically generated from Geographic Information Systems (GIS). To support the surveying of new infrastructure, an innovative workflow for planning and surveying of geospatial data is proposed. Moreover, we report on first results from field tri...

Since GPS technology which is intensively used in surveying application today, can not directly be employed to measure some details such as building boundaries, it is still a necessity to establish control points on the ground and coordinate them by GPS and then measure the details by a total station set up on these control points. Establishment of control points on the ground and their compuls...

In the oil industry, the measurement-while-drilling (MWD) systems are usually used to provide the real-time position and orientation of the bottom hole assembly (BHA) during drilling. However, the present MWD systems based on magnetic surveying technology can barely ensure good performance because of magnetic interference phenomena. In this paper, a MWD surveying system based on a fiber optic g...

The Doctorate of Geomatics and Infrastructures continues the tradition of the previous Doctorate in Geodesy and Geomatics, dating back to the first cycle of doctorates in Italy of the years 1983-86. Thus, according to the vision of the Doctorate School of Politecnico di Milano, we are working now within an interdisciplinary environment. The original field of geomatics, which in any way was alre...

The term “data surveying” refers to the preliminary examination of a dataset to assess its overall character, and this process typically involves simple descriptive statistics to characterize the available variables, along with detection of data anomalies (e.g., outliers or incomplete records) and possibly other “interesting” or “unusual” features that may be worthy of careful scrutiny. In the ...

This study is aimed at investigating a portion of the city of Rome by means of remotely sensed Multispectral Infrared And Visible Imaging Spectrometer (MIVIS) data. A particular attention was devoted to building roofs described not only as the last defining touch given to a building, the aesthetic conclusion to a whole construction process, but also as expression and sign of a society’s level o...

1 Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, Sofia, Bulgaria e-mails: [email protected], [email protected] 2 Department of Infrastructure and Surveying Engineering, School of Rural and Surveying Engineering, National Technical University of Athens, Athens, Greece 3 Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, Sof...

The Faculty of Engineering & Surveying Technical Reports serve as a mechanism for disseminating results from certain of its research and development activities. The scope of reports in this series includes (but is not restricted to): literature reviews, designs, analyses, scientific and technical findings, commissioned research, and descriptions of software and hardware produced by staff of the...