Orthophoto map with resolution of 1 mm – Ljubljana city Square renovation
This was our first cultural heritage project done using photogrammetry, and could mean the use of state-of-the-art techniques in future practices.
In order to renovate this particular square in the centre of Ljubljana an accurate orthophoto with resolution of 1 mm was needed. The images were captured with Olympus EPL 7 camera and DJI S900 drone from a height of 20m.
3Dsurvey enabled us to produce an accurate orthophoto map of the area, serving as a great archive of the current situation as well. For accurate orientation we used ground control targets – black dots with 25mm radius, simply printed on paper. Ground control targets were measured using a total station.
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