Skaitmeninio reljefo modelio kūrimo metodai ir tikslumo tyrimas, taikant skaitmenines fotogrametrijos technologija

Geodesy and Cartography

Ūselis

2010

Self Cite

Santrauka. Analizuojamas Žemės paviršiaus trimatis modeliavimas pagal geodezinius ir fotogrametrinius matavimo duomenis, taikant tiesinį, svorinį ir Kriging interpoliavimo metodus. Interpoliavimo algoritmai pertvarkyti ir pritaikyti MATLAB paketo vykdomajam kodui. Sudarytoji programa Geo3D skirta erdviniams duomenims vaizduoti pagal geodezinius ir fotogrametrinius duomenis. Geo3D programa sudaryti trimačiai Žemės paviršiaus modeliai įvertinti bei palyginti su modeliais, sukurtais reljefo vaizdavimo programa WinSurf.

Section: įVadasunclassified

Deterministiniu ir geostatistiniu interpoliavimo metodu taikymas žemes paviršiui modeliuoti

Nareiko

Geodesy and Cartography

Ūselis

2010

Self Cite

“…While implementing digital photogrammetric technologies for the highest productivity, the comparison analysis of softcopies, applied in such processes as images orientation, aerial triangulation, digital terrain model and orthophotos generation, is relevant (Nurminen et al 2013;Luhmann et al 2006;Ruzgienė 2010). The investigations in such criteria as system flexibility, production time, accuracy and cost consideration should be significant.…”

Section: Introductionmentioning

confidence: 98%

A Comparison Analysis of Different Photogrammetric Softcopies for Geodata Production

Voitechovič

Geodesy and Cartography

2014

Up-to-date mapping technologies for geodata production are widely applicable in Remote Sensing and Photogrammetry Communities. Therefore, the education in Remote Sensing and photogrammetric methods becomes very important using different image processing software for the terrain mapping purposes, spatial data modelling, etc. The use of new methods, technologies and professional widely-known systems demonstrates the desire to increase mapping capability. Despite that, digital didactics photogrammetric systems might be used (particularly in education process) simultaneously, this way getting more efficiency results. The objective of the research is to analyse some aspects of the use of digital photogrammetric softcopies, applied for terrain mapping: professional IMAGE ERDAS with LPS, LISA and Didactics Digital Photogrammetric Systems (DDPS). The experimental investigations lead to contiguity of this different software in consideration of the following criteria: accuracy, flexibility and time. The digital terrain models and orthophoto maps, created using two technologies, are almost the same due to time required for separate image processing steps. However, full workflow on DDPS requires about 2.5 times less time than on LPS. The photogrammetric measurement results demonstrate that there are some differences in accuracy due to stereoscopic measurements. When processing the images, the defined value of accuracy estimators meets the requirements for topographic mapping; however, DEM needs a separate study.

“…Elevation data are important for generating and updating terrain models (Haala et al 2010;Kraus 2007). It is extremely important that the digital terrain model of the surface is created in required quality (Harvin, Lucieer 2012;Nurminen et al 2013;Ruzgienė 2010).…”

Section: Introductionmentioning

confidence: 99%

UAV photogrammetry for road surface modelling

The Baltic Journal of Road and Bridge Engineering

Aksamitauskas

Daugėla³

et al. 2015

Recently, the interest of Unmanned Aerial Vehicle application in photogrammetric environment for roads observation and monitoring has increased in many countries, in Lithuania as well. The experimental object for demonstration of capability and efficiency of aerial vehicle-based remote sensing technology for road data collection was a western bypass of Vilnius. The platform of the model UX5 Trimble with mounted camera Sony NEX-5R was applied for gaining images. The implemented means are mobile and not expensive. Photogrammetric technique with software package Business Center Photogrammetry Module was applied for the modelling of images. The correctness of digital surface model generally depends on camera resolution, flight height and accuracy of ground control points. The coordinates of control points were determined using Global Positioning System Trimble R4. Paper demonstrates results of a new technology application possibilities for linear object (road) mapping and accuracy evaluation of spatial models. The road points positioning accuracy investigation was carried out in consideration with geodetic control measurements. The average root mean square error for the points coordinates is 2.94 cm, and standard deviations – 2.78 cm. Analyzing coincidence or mismatches of Vilnius western bypass project data with photogrammetric product, not significant discrepancies of road section features were determined. The cost consideration of Unmanned Aerial Vehicle in conjunction with photogrammetry employment at experimental object is presented.