In Field of agriculture, the cultural manual inspection remains as a slow and tedious work along with the high error factor, in order to overcome this problem, this research work illustrates the different techniques u...
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作者:
Garrido, I.Laguela, S.Sfarra, S.Solla, M.Univ Vigo
Min & Energy Engn Sch Appl Geotechnol Res Grp Rua Maxwell S-N Vigo 36310 Spain Univ Salamanca
EPS Avila TIDOP Res Grp Calle Hornos Caleros 50 Avila 05003 Spain Univ Aquila
Dept Ind & Informat Engn & Econ DIIIE Piazzale E Pontieri 1 I-67100 Laquila Italy Spanish Naval Acad
Def Univ Ctr Plaza Espana S-N Marin 36920 Spain
Heritage elements, from historic buildings to stone sculptures and panels, stand as key elements in the history of humanity. Unfortunately, the deterioration of both the surface and the interior of these elements is i...
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Heritage elements, from historic buildings to stone sculptures and panels, stand as key elements in the history of humanity. Unfortunately, the deterioration of both the surface and the interior of these elements is inevitable, endangering the quality and existence of these structures of high historical value in the event of a delay in the implementation of the required maintenance tasks. InfraRed Thermography, IRT, appears as one of the most recent techniques to detect and characterize possible pathologies in structures in their early stages, being very useful for a preventive analysis in heritage elements. This paper presents a methodology for the automatic detection and characterization of one of the most severe and frequent pathologies in heritage structures, moisture, from thermal images. The proposal stands as a demonstration of the potential of the IRT technique for heritage conservation applications, and as a new step towards the automation of the inspection process and optimization of the decision-taking in conservation actions within cultural heritage. For that, two thermal criteria and a semiautomatic image rectification process are implemented as main phases of the methodology, obtaining good results for the detection of moisture zones and accurate area values with regard to the real dimensions of each moisture zone. Specifically, an F-score average of 78%+/- 19% regarding detection performance and a percentage relative error of minimum 4%, and maximum of 12%, referred to the area computation in unit metrics are obtained.
Composite materials/structures are advancing in product efficiency, cost-effectiveness and the development of superior specific properties. There are increasing demands in their applications to load-carrying structure...
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This proposed method aims towards a full automation of the detection of coronary artery blockage through some imageprocessingtechniques so that the system does not have to rely on human's inspection. The goal of...
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Crystalline silicon photovoltaic (PV) cells are essential components in building-integrated photovoltaic (BIPV) systems, where identifying defects is vital to ensure energy efficiency, operational safety, and long-ter...
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Small scale quad-rotor unmanned aerial vehicle (UAV) has attracted much attention in recent years and has been widely adopted in many civil applications, e.g. inspection of critical infrastructure spanning over a larg...
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ISBN:
(纸本)9781538635247
Small scale quad-rotor unmanned aerial vehicle (UAV) has attracted much attention in recent years and has been widely adopted in many civil applications, e.g. inspection of critical infrastructure spanning over a large geographical area. In a typical UAV based inspection system for large-scale photovoltaic farm, it is required to control the mounted gimbal camera taking pictures of all the PV modules and eventually accurately identify the ones with defects through efficient imageprocessingtechniques. Given a series of way points without an effective path generation algorithm, the image acquisition can be not satisfactory and even miss some areas that should be inspected. In this paper, a Bezier curve and particle swarm optimization (PSO) joint approach is presented to address the UAV path planning challenge. The path generation process fully takes flight attitude, gimbal limitation and path length into consideration with the aim to improve the efficiency and the reliability of the inspection system. The performance of the proposed solution is assessed through a set of simulation experiments and the numerical result demonstrates the effectiveness of the proposed optimal path planning solution.
Most industrial visual inspection systems still dealing with a low variety of object classes. This is because even the most recognition techniques and representation scheme are not flexible enough to support major cha...
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