Geomatics and Environmental Engineering
Loading...
ISSN 1898-1135
e-ISSN: 2300-7095
Issue Date
2013
Volume
Vol. 7
Number
No. 1
Description
Journal Volume
Geomatics and Environmental Engineering
Vol. 7 (2013)
Projects
Pages
Articles
Automation of measurements of selected targets of photopoints in application to photogrammetric reconstruction of road accidents
(2013) Bernat, Katarzyna; Tokarczyk, Regina
Presently, the use of photogrammetric methods in various measurement tasks is becoming more and more popular. More and more often, the achievements of photogrammetry are utilized in the reconstruction of road accidents, thus making it possible to measure the post-accident situation not only on the site but also in desk work conditions based on accident site photos. Before a photo is taken, it is necessary to target measurement points in a proper way. The measurement of those targets takes place most often in an automatic mode. During the reconstruction of road accidents, most often targets in the form of black and white cheąuered patterns, fixed at the ends of a metal cross, are used. Such targets considerably impede the measurement automation (cf. perspective distortions and scale differences). In this paper an attempt was made at creating a program for an automatic detection and measurement of those targets. For that purpose, Matlab v. 7.10 package was applied. Due to that type of signalling, only a qualified success was attained, since target measurement needed to be supported by the program user. Also another way of signalling was proposed that enabled encoding of point numbers. Signs in the form of ring codes were selected. Algorithms of automatic detection, measurement and the identification of signals in digital images were developed. The created algorithms performed well under field conditions, and also allowed for the determination of detailed rules of making photos in accident sites.
Actualization of data concerning surface flowing waters, based on INSPIRE Directive requirements
(2013) Bieda, Agnieszka; Bydłosz, Jarosław; Parzych, Piotr
Currently, Poland is at the stage of creating and implementing the provisions of the law related to the formation of infrastructure for spatial information. New legislation is to ensure consistency of the databases on which maps will be generated. It is required that the database created pursuant to the INSPIRE Directive is kept up to date. Implementation of completely new surveys, based on which the correct data collections would be created, is almost impossible due to the time and costs of their execution. Due to the large variability in time, the most vulnerable to obsolescence database elements will be those in the area of surface (sea, flowing and standing) water. It is there, irrevocably, to be checked whether it is necessary to amend the previously existing data collections.
The impact of biogenic volatile organic compounds emission on photochemical processes occurring in the troposphere
(2013) Bogacki, Marek; Syguła, Paulina
Biogenic volatile organic compounds (BVOCs) have a significant impact on air quality in the ground layer of the atmosphere and they play a major role in forming the climate. They are the main precursors of tropospheric ozone and they are a source of secondary organic aerosols in the atmosphere. Indirectly they also affect the dimate-forming processes. The paper presents the influence of BVOCs on photochemical processes occurring in the atmosphere. The main mechanisms of reactions associated with BVOC oxidation in the air and the formation of secondary organic aerosols have been discussed here. Physico-chemical conditions of the course of the indicated mechanisms have been identified. The problems and uncertainties faced by atmospheric chemists while preparing a qualitative and quantitative description of chemical reactions in the atmosphere involving BVOCs have been discussed as well.
An investigation into the influence of a temperature load of a suspended roof in measurements for diagnostic purposes
(2013) Deska, Krzysztof
This paper presents issues concerning the necessity and possibility of including a temperature load of a suspended, open structure, especially in terms of correct identifying a displacement caused by snow and ice loads. Using statistical analysis tools, based on the results of periodic measurements, appropriate calculations were carried out. Both possibilities and limitations of this approach and the use of outcomes were indicated and the need for and directions of a continued research in this area were demonstrated.
Thematic map as a form of visualisation of information on landscape architecture components
(2013) Kowacka, Magdalena
The present paper presents the possible application of information on landscape architecture components obtained in measurements carried out by means of GPS Nautiz X7, manufactured by Handheld. The identified components indude commemorative plaques for artists, and headstones at the Salwatorski, Rakowicki and Jewish Cemeteries in Cracow. Not only do the measurements serve the purpose of preparation of the thematic map, but they are also carries of various information which after adequate processing could be subject to further analyses and widely employed.