Integrating Thermographic Images in A User-Friendly Platform to Support Inspection of Railway Bridges

Olmi, Roberto; Palombi, Lorenzo; Durazzani, Simone; Poggi, Daniele; Renzoni, Nicolò; Costantino, Fabrizio; Durazzani, Stefano; Frilli, Gianni; Raimondi, Valentina

doi:10.3390/proceedings2019027012

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…We find use of infrared camera arrays for passive Infrared Thermography (IRT) more commonplace, owing to swifter and less costly implementation. Leading systems identify both air and water filled voids, with individual scans displayable as 2D panoramic imagery [53] or pioneering 3D mesh overlays on digital structural models rendered using TOSCA-FI [60] (Figure 3) or Augmented Reality [61] (Section 6.2). Despite recent work, Thermography still exhibits persistent limitations [54] undermining direct application to RTSSI:…”

Section: Thermographic Methodsmentioning

confidence: 99%

Developments in 3D Visualisation of the Rail Tunnel Subsurface for Inspection and Monitoring

2022

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Railway Tunnel SubSurface Inspection (RTSSI) is essential for targeted structural maintenance. ‘Effective’ detection, localisation and characterisation of fully concealed features (i.e., assets, defects) is the primary challenge faced by RTSSI engineers, particularly in historic masonry tunnels. Clear conveyance and communication of gathered information to end-users poses the less frequently considered secondary challenge. The purpose of this review is to establish the current state of the art in RTSSI data acquisition and information conveyance schemes, in turn formalising exactly what constitutes an ‘effective’ RTSSI visualisation framework. From this knowledge gaps, trends in leading RTSSI research and opportunities for future development are explored. Literary analysis of over 300 resources (identified using the 360-degree search method) informs data acquisition system operation principles, common strengths and limitations, alongside leading studies and commercial tools. Similar rigor is adopted to appraise leading information conveyance schemes. This provides a comprehensive whilst critical review of present research and future development opportunities within the field. This review highlights common shortcomings shared by multiple methods for RTSSI, which are used to formulate robust criteria for a contextually ‘effective’ visualisation framework. Although no current process is deemed fully effective; a feasible hybridised framework capable of meeting all stipulated criteria is proposed based on identified future research avenues. Scope for novel analysis of helical point cloud subsurface datasets obtained by a new rotating ground penetrating radar antenna is of notable interest.

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Section: Thermographic Methodsmentioning

confidence: 99%

Developments in 3D Visualisation of the Rail Tunnel Subsurface for Inspection and Monitoring

2022

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“…A transformation based on at least 4 pairs of affine points was used for image registration. Further detail on the platform can be found in [10].…”

Section: Tosca-fi Platformmentioning

confidence: 99%

Fluorescence LIDAR experiments and their integration in a user-friendly platform to support inspection of railway bridges

Palombi

Durazzani²,

Guzzi³

et al. 2022

Remote Sensing Technologies and Applications in Urban Environments VII

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An effective maintenance plan of railways bridges needs suitable, user-friendly tools for preventive inspection. The latter, actually, when applied to large infrastructures such as railways bridges, requires a large amount of resources and it is time consuming. Presently, most inspection relies only on visual inspection, often with a lack of adequate procedures for documentation filing and an easy consultation of it. In this paper we present a series of experiments conducted with the aim of developing an ICT tool for supporting the inspection of railways bridges. The developed tool integrates a full range of diverse data and guarantees easy access for their storage and consultation. The data integrated in the ICT platform includes images acquired with diverse techniques (3D scanning, high definition photography, photogrammetry, thermography, fluorescence LIDAR) and integrates them with data from traditional survey methods. In order to make easier the consultation to the user, the data are integrated onto a 3D model of the bridge. In particular, we will focus on the results obtained by using the fluorescence LIDAR and 3D LIDAR scanning technique on a masonry bridge for its preventive inspection and their integration in the ICT platform. All data were also complemented with the results from traditional survey methods. False-color coded thematic maps based on fluorescence LIDAR data highlighted the presence of biofilms and patinas on the bridge's surface, providing complementary information with respect to those from thermographic images at large.

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Integrating Thermographic Images in A User-Friendly Platform to Support Inspection of Railway Bridges

Cited by 2 publications

References 5 publications

Developments in 3D Visualisation of the Rail Tunnel Subsurface for Inspection and Monitoring

Developments in 3D Visualisation of the Rail Tunnel Subsurface for Inspection and Monitoring

Fluorescence LIDAR experiments and their integration in a user-friendly platform to support inspection of railway bridges

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