3D reconstruction with fisheye images strategies to survey complex heritage buildings

Covas, Joao; Ferreira, Victor; Mateus, Luís

doi:10.1109/digitalheritage.2015.7413850

Cited by 29 publications

(27 citation statements)

References 11 publications

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“…The close range photogrammetry technique is chosen in order to achieve this goal trying to push one step further the understanding of fisheye lenses, both in theory and in practice. Fisheye photogrammetry turned out to be the most promising solution (Marčiš, 2016) (Covas, 2015) in comparison with other consolidated tools, such as traditional laser scanners or new developed hand-held mobile mapping devices, such as Kinect style mobile devices or Slam 3D scanners. Spaces like corridors, tunnels or staircases represent challenging tasks for each of these techniques.…”

Section: Fisheye Lenses To Survey Narrow Spacesmentioning

confidence: 99%

Fisheye Photogrammetry: Tests and Methodologies for the Survey of Narrow Spaces

Perfetti¹,

Polari²,

Fassi³

2017

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:The research illustrated in this article aimed at identifying a good standard methodology to survey very narrow spaces during 3D investigation of Cultural Heritage. It is an important topic in today's era of BIM modelling applied to Cultural Heritage. Spaces like staircases, corridors and passages are very common in the architectural or archaeological fields, and obtaining a 3D-oriented survey of those areas can be a very complex task when completeness of the model and high precision are requested. Photogrammetry appears to be the most promising solution in terms of versatility and manoeuvrability also considering the quality of the required data. Fisheye lenses were studied and tested in depth because of their significant advantage in the field of view if compared with rectilinear lenses. This advantage alone can be crucial to reduce the total amount of photos and, as a consequence, to obtain manageable data, to simplify the survey phase and to significantly reduce the elaboration time. In order to overcome the main issue that arise when using fisheye lenses, which is the lack of rules that can be employed to design the survey, a general mathematical formulation to precisely estimate the GSD (Ground Sampling Distance) for every optical projection is presented here. A complete survey of a real complex case study was performed in order to test and stress the proposed methodology, and to handle a fisheye-based survey from beginning to end: the photogrammetric survey of the Minguzzi Staircase. It is a complex service spiralstaircase located in the Duomo di Milano with a total height of 25 meters and characterized by a narrow walkable space about 70 centimetres wide.

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Section: Fisheye Lenses To Survey Narrow Spacesmentioning

confidence: 99%

Fisheye Photogrammetry: Tests and Methodologies for the Survey of Narrow Spaces

Perfetti¹,

Polari²,

Fassi³

2017

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…Furthermore, the non-linear variability of the Ground Sample Distance (GSD) of fisheye lenses could represent an obstacle during the matching phase for automatic interest operators, influencing the quality of the estimated external orientation parameters and the delivered photogrammetric products. On the other hand, fisheye lenses represent a great opportunity because they can significantly reduce the amount of requested images, guarantying at the same time acquisition geometries that are interesting from a pure photogrammetric point of view (Bolognesi et al, 2015, Covas et al, 2015. The Parrot Bebop 2 (from now on Bebop) combines a number of the drone characteristics discussed so far.…”

Section: Introductionmentioning

confidence: 99%

Use of Fisheye Parrot Bebop 2 Images for 3d Modelling Using Commercial Photogrammetric Software

Pagliari

Pinto

2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Fisheye camera installed on-board mass market UAS are becoming very popular and it is more and more frequent the use of such platforms for photogrammetric purposes. The interest of wide-angles images for 3D modelling is confirmed by the introduction of fisheye models in several commercial software packages. The paper exploits the different mathematical models implemented in the most famous commercial photogrammetric software packages, highlighting the different processing pipelines and analysing the achievable results in terms of checkpoint residuals, as well as the quality of the delivered 3D point clouds. A two-step approach based on the creation of undistorted images has been tested too. An experimental test has been carried out using a Parrot Bebop 2 UAS by performing a flight over an historical complex located near Piacenza (Northern Italy), which is characterized by the simultaneous presence of horizontal, vertical and oblique surfaces. Different flight configurations have been tested to evaluate the potentiality and possible drawbacks of the previously mentioned UAS platform. Results confirmed that the fisheye images acquired with the Parrot Bebop 2 are suitable for 3D modelling, ensuring accuracies of the photogrammetric blocks of the order of the GSD (about 0.05 m normal to the optic axis in case of a flight height equal to 35 m). The generated point clouds have been compared to a reference scan, acquired by means of a MS60 MultiStation, resulting in differences below 0.05 in all directions.

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Section: Image-basedmentioning

confidence: 99%

“…Despite photogrammetry being an old discipline, used for purposes other than 3D reconstruction, some studies (Covas et al;Louiset et al;2016;Utomo and Wibowo;2017) that fall under this category present interesting advances. For example, Covas et al (Covas et al; used sh-eye images to reconstruct hard-to-reach parts of two medieval castles in Portugal. The authors reported that the usage of sh-eye images made the acquisition process quicker, that it was easier to connect di erent parts of the surveyed location, and that it was possible to acquire images that would otherwise demand unmanned aerial vehicles.…”

Section: Image-basedmentioning

confidence: 99%

“…References Number of Studies Texture Mapping (Brusco et al;, , , (Isoda et al;, 2007), , (Lari et al;, (Manferdini;, (Ragia et al;, (Remondino;2007), (Rocchini et al;, , (Sormann et al;, (Utomo and Wibowo;2017) 14 None (Banerjee et al;, (Boochs et al;2007), (Caprioli and Scognamiglio;, (Covas et al;, (Makantasis et al;, (Pedersini et al;, (Prokos et al;, (Stentoumis et al;, (Vogiatzis and Hernández;2010) …”

Section: Realism Featurementioning

confidence: 99%

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Low-cost 3D reconstruction of cultural heritage artifacts

Raimundo

Apaza-Aguero

Apolinário

2018

RBCA

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Abstract3D reconstruction methods can be used to obtain digital models by capturing the shape and appearance of real objects. Due to both scienti c and technological advances, low-cost 3D reconstruction is now widely used to reconstruct objects of reasonable geometric complexity using cheap acquisition hardware; however, it is unclear whether or not these devices produce suitable results to preserve cultural heritage artifacts. First, this paper goes over the general concept of 3D reconstruction and the main di erences between lowcost and general-purpose 3D reconstruction pipelines, these di erences are illustrated using a prototypical low-cost pipeline that has been used to reconstruct heritage artifacts. Then, we present the results of a survey conducted in order to investigate how existing low-cost 3D reconstruction approaches attempted to improve the results of their reconstructions, with an emphasis on the realistic rendering techniques they have used. Throughout the survey process, a categorization for low-cost 3D methodologies was proposed based on the scanning apparatus used by the approaches and other similarities between them. Finally, based on the surveyed studies and the results obtained with the prototypical pipeline, we conclude that it is possible to preserve heritage artifacts using low-cost approaches, granted that modern realism techniques are used to improve the appearance of the models.Key words: Low-cost 3D reconstruction; cultural heritage; digital heritage; survey. ResumoOs métodos de reconstrução 3D permitem a obtenção de modelos digitais através da captura da informação de forma e aparência dos objetos. Devido a avanços cientí cos e tecnológicos, técnicas de reconstrução 3D de baixo custo se tornaram amplamente utilizadas para reconstruir objetos com geometria razoavelmente complexa usando dispositivos de aquisição de baixo custo; no entanto, ainda é discutível a aplicabilidade desses dispositivos de baixo custo para preservação de artefatos culturais. Primeiramente, esse trabalho introduz a área de reconstrução 3D e discute as principais diferenças entre metodologias de reconstrução de baixo custo e metodologias de reconstrução de propósito geral, essas diferenças são ilustradas ao ser apresentado um protótipo de metodologia de baixo custo que foi utilizado para reconstrução de artefatos culturais. Posteriormente, são apresentados os resultados de um levantamento realizado a m de investigar como as propostas existentes de reconstrução de baixo custo visaram melhorar a qualidade das reconstruções geradas, com ênfase nas técnicas de renderização realista utilizadas. Ao longo da realização do levantamento, foi proposta uma categorização dos estudos investigados levando em consideração o aparato de escaneamento utilizado e outras similaridades. Ao m, com base nos estudos levantados e nos resultados obtidos usando a metodologia apresentada, conclui-se que é possível a utilização de metodologias de reconstrução de baixo custo para preservação de artefatos culturais, uma vez que sejam utilizad...

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3D reconstruction with fisheye images strategies to survey complex heritage buildings

Cited by 29 publications

References 11 publications

Fisheye Photogrammetry: Tests and Methodologies for the Survey of Narrow Spaces

Fisheye Photogrammetry: Tests and Methodologies for the Survey of Narrow Spaces

Use of Fisheye Parrot Bebop 2 Images for 3d Modelling Using Commercial Photogrammetric Software

Low-cost 3D reconstruction of cultural heritage artifacts

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