engleski

Accuracy potential of 3D-reconstruction by use of a smartphone camera

The contemporary smartphones have the built-in cameras of geometric features comparable to digital cameras. Overall, an image quality of smartphone cameras suffers first of all because of a small imaging sensor and a simple objective lens. Although the digital cameras are commonly used for archaeometric tasks, there are situations where the digital cameras are not accessible in- situ at the right moment. The smartphone is easy to find in almost every pocket. That is why photogrammetric abilities of the smartphone cameras were explored. During the international workshop of fortification architecture on the island of Brijuni Minor (in organisation of the Ministry of Culture, the Republic of Croatia, supported by ICOMOS, and the National Park “Brijuni”), a torpedo house has been chosen to produce relevant documentation for 3D-reconstruction and conservation purposes. It has been photographed by advanced digital photogrammetric equipment (NIKON D800E + SIGMA RF20). At the same time, images of the same object were taken by built-in smartphone camera (SAMSUNG S4). From every image set, the 3D- model of the torpedo house was reconstructed by means of “Structure from Motion” algorithm. Both models were oriented to the common coordinate system, and their spatial accuracy as well as level-of-details were compared and discussed.

photogrammetry; smartphone; 3D-model

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