Application of a photogrammetry-based system to measure and re-engineer ship hulls and ship parts: An industrial practices-based report

Koelman, Herbert J.

doi:10.1016/j.cad.2010.02.005

Cited by 36 publications

(19 citation statements)

References 25 publications

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“…This kind of method, even if not more expensive and rather flexible, usually does not produce very accurate results, especially for large-dimensions objects. Indirect approach, instead, does not require any contact between measurements tools and boat hull [3]. Most common techniques used for noncontact reconstructions of 3D objects [4][5][6][7][8] are based on laser scanning systems and photogrammetry methods.…”

Section: Introductionmentioning

confidence: 99%

A reverse engineering approach to measure the deformations of a sailing yacht

Paola

Ingrassia

Brutto

et al. 2016

Lecture Notes in Mechanical Engineering

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In this work, a multidisciplinary experience, aimed to study the permanent deformations of the hull of a regatta sailing yacht is described. In particular, a procedure to compare two different surfaces of the hull of a small sailing yacht, designed and manufactured at the University of Palermo, has been developed. The first one represents the original CAD model while the second one has been obtained by means of a reverse engineering approach. The reverse engineering process was performed through an automatic close-range photogrammetry survey, that has allowed to obtain very accurate measures of the hull, and a 3D modelling step by the well-known 3D computer graphics software Rhinoceros. The reverse engineering model was checked through two different procedures implemented by the graphical algorithm editor Grasshopper. The first procedure has allowed to compare the photogrammetric measurements with the rebuilt surface, in order to verify if the reverse engineering process has led to reliable results. The second has been implement to measure the deviations between the original CAD model and the rebuilt surface of the hull. This procedure has given the possibility to highlight any permanent deformation of the hull due to errors during the production phase or to excessive loads during its use. The obtained results have demonstrated that the developed procedure is very efficient and able to give detailed information on the deviation values of the two compared surfaces.

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Section: Introductionmentioning

confidence: 99%

A reverse engineering approach to measure the deformations of a sailing yacht

Paola

Ingrassia

Brutto

et al. 2016

Lecture Notes in Mechanical Engineering

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“…High accuracy three-dimensional coordinates are automatically obtained after image processing, image automatic orientation, automatic matching of image points, and self-calibrating bundle block adjustment. Currently, typical measurement accuracies of industrial photogrammetry systems can reach ±0.1 mm/10 m [2,3] . An industrial photogrammetry system has characteristics such as high accuracy, high efficiency, automation, flexibility, and convenience.…”

Section: Principles Of Industrial Photogrammetrymentioning

confidence: 99%

Study on pipeline photogrammetry in pipeline gallery modules in the SASOL project

Wan¹,

Sheng-wen²,

Shang-guo³

et al. 2017

Proceedings of the 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC

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This study addresses the problem of pipeline opening measurement in SASOL pipeline gallery modules by proposing the use of an industrial photogrammetry method. The position coordinates of the pipeline opening in the local coordinate system were first obtained and then converted to the overall modular coordinate system using the common point. Experiments showed that the coordinates obtained from industrial photogrammetry had an internal accord accuracy better than 0.2 mm, which satisfies the accuracy requirements for pipeline measurement. Compared with the electronic distance measuring device (EDM) method, the industrial photogrammetry method reduced the time taken for one measurement from 21.6 h to 1.5 h, which substantially increases the measurement efficiency of the method, thereby increasing its application value.

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“…The primary focus of the previous tasks has been the shipchecking prior to overhauling or maintenance activities. In a similar sense, but with a focus rather on the extraction of hull geometrical characteristics, as in (Koelman 2010), the shape -reverse engineering of ships is discussed for shape retrieval for damage repairs, post-building verification, etc. In (Menna et al 2011) the methodology for 3D modeling of floating objects is extracted using a hybrid scheme of terrestrial and underwater image acquisition.…”

Section: Introductionmentioning

confidence: 99%