Abstract
The energy monitoring of heritage buildings has, to date, been governed by methodologies and standards that have been defined in terms of sensors that record scalar magnitudes and that are placed in specific positions in the scene, thus recording only some of the values sampled in that space. In this paper, however, we present an alternative to the aforementioned technologies in the form of new sensors based on 3D computer vision that are able to record dense thermal information in a three-dimensional space. These thermal computer vision-based technologies (3D-TCV) entail a revision and updating of the current building energy monitoring methodologies. This paper provides a detailed definition of the most significant aspects of this new extended methodology and presents a case study showing the potential of 3D-TCV techniques and how they may complement current techniques. The results obtained lead us to believe that 3D computer vision can provide the field of building monitoring with a decisive boost, particularly in the case of heritage buildings.
Highlights
We refer to the following topics and references: creation of thermal point clouds [55], multi-session point cloud alignment procedure [56], data segmentation by structural elements [57], creation of semantic 3D models [44,58], processing of thermal orthoimages [59], clustering algorithms of characteristic regions in thermal orthoimages [59], and software tools for the visualisation and exploration of 3D thermal models obtained with scanners [55]
We have presented a revision and updating of the current building energetic monitoring methodologies including thermal computer vision-based technologies (3D-TCV)
This paper provides a detailed definition of the most significant aspects of this new extended methodology and presents a case study showing the potential of 3D-TCV techniques and how they complement the current techniques
Summary
The indoor environment tends to be more stable than the outdoor climate, and to fluctuate less and more slowly Under these temperature and humidity conditions, the materials comprising both the indoor elements and the works of art they enclose (sculptures, paintings, frescoes) adapt and become acclimated, and endure the passage of time [7]. The measurement data obtained should be checked and validated before use, taking into account the data formats necessary. These data are normally the subject of different types of analysis and may be used by the building’s management or control systems, when they exist [45]. The methodology provided by the EN 13187: 1998 standard can, be employed to monitor thermal bridges and envelopes of buildings using thermal imaging cameras [49]
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