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Internet photogrammetry for inspection of seaports

Paszotta Z., Szumilo M., Szulwic J.

Polish Maritime Research

2017

S 1

174--181

This paper intends to point out the possibility of using Internet photogrammetry to construct 3D models from the images obtained by means of UAVs (Unmanned Aerial Vehicles). The solutions may be useful for the inspection of ports as to the content of cargo, transport safety or the assessment of the technical infrastructure of port and quays. The solution can be a complement to measurements made by using laser scanning and traditional surveying methods. In this paper the authors recommend a solution useful for creating 3D models from images acquired by the UAV using non-metric images from digital cameras. The developed algorithms, created and presented software allows to generate 3D models through the Internet in two modes: anaglyph and display in shutter systems. The problem of 3D image generation in photogrammetry is solved by using epipolar images. The appropriate method was presented by Kreiling in 1976. However, it applies to photogrammetric images for which the internal orientation is known. In the case of digital images obtained with non-metric cameras it is required to use another solution based on the fundamental matrix concept, introduced by Luong in 1992. In order to determine the matrix which defines the relationship between left and right digital image it is required to have at least eight homologous points. To determine the solution it is necessary to use the SVD (singular value decomposition). By using the fundamental matrix the epipolar lines are determined, which makes the correct orientation of images making stereo pairs, possible. The appropriate mathematical bases and illustrations are included in the publication.

Koncepcja zabezpieczenia portów morskich w aspekcie zagrożeń asymetrycznych

Sekuła J., Karwacka K.

Logistyka

2013

nr 6

Bezpieczeństwo jednostek morskich w porcie oraz infrastruktury portowej jest ważnym elementem poziomu bezpieczeństwa w prowadzeniu handlu drogą morską. Zniszczenie - uszkodzenie statku lub urządzeń portowych może prowadzić do dużych strat finansowych i materialnych. Każdy port powinien posiadać systemy monitorujące obszar wokół niego, dzięki któremu będzie można wcześniej ostrzec stacjonujące w nim statki oraz zabezpieczyć infrastrukturę portową przed atakami terrorystycznymi.

Safety naval units in port and port infrastructure is an important element the level of safety in the conduct of trade by sea. Destruction - damage to the ship or the port facilities can lead to large financial losses and property. Each port should have systems to monitor the area around it, so that you can pre-warn ships stationed in the port infrastructure and protect against terrorist attacks.