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Road Asphalt Pavements Analyzed by Airborne Thermal Remote Sensing: Preliminary Results of the Venice Highway

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ABSTRACT

This paper describes a fast procedure for evaluating asphalt pavement surface defects using airborne emissivity data. To develop this procedure, we used airborne multispectral emissivity data covering an urban test area close to Venice (Italy).For this study, we first identify and select the roads' asphalt pavements on Multispectral Infrared Visible Imaging Spectrometer (MIVIS) imagery using a segmentation procedure. Next, since in asphalt pavements the surface defects are strictly related to the decrease of oily components that cause an increase of the abundance of surfacing limestone, the diagnostic absorption emissivity peak at 11.2μm of the limestone was used for retrieving from MIVIS emissivity data the areas exhibiting defects on asphalt pavements surface.The results showed that MIVIS emissivity allows establishing a threshold that points out those asphalt road sites on which a check for a maintenance intervention is required. Therefore, this technique can supply local government authorities an efficient, rapid and repeatable road mapping procedure providing the location of the asphalt pavements to be checked.

No MeSH data available.


(a) MIVIS scene, outlined in black over a regional map; (b) MIVIS imagery acquired over Venice study area (755 columns × 2956 lines).
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f1-sensors-08-01278: (a) MIVIS scene, outlined in black over a regional map; (b) MIVIS imagery acquired over Venice study area (755 columns × 2956 lines).

Mentions: The study area (Figure 1) is characterized by a mixture of urban land cover types and surface materials, including many asphalted roads and, in particular, two main highways with asphalt pavements of different ages and conditions (i.e., more or less weathered and corroded). The study area corresponds to a MIVIS (Table 1) scene of 755 columns × 2956 lines (Figure 1b) and is centered at latitude 45°33′19″N and longitude 12°16′49″E. The flight strip was acquired over a rural area close to Venice city (Italy; Figure 1a) on November 23, 2006 at 11:56 (GMT), using scan rates of 25 scans/s at an altitude of 1500m, corresponding to a 3-m ground-pixel resolution at the instrument's IFOV.


Road Asphalt Pavements Analyzed by Airborne Thermal Remote Sensing: Preliminary Results of the Venice Highway
(a) MIVIS scene, outlined in black over a regional map; (b) MIVIS imagery acquired over Venice study area (755 columns × 2956 lines).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3927529&req=5

f1-sensors-08-01278: (a) MIVIS scene, outlined in black over a regional map; (b) MIVIS imagery acquired over Venice study area (755 columns × 2956 lines).
Mentions: The study area (Figure 1) is characterized by a mixture of urban land cover types and surface materials, including many asphalted roads and, in particular, two main highways with asphalt pavements of different ages and conditions (i.e., more or less weathered and corroded). The study area corresponds to a MIVIS (Table 1) scene of 755 columns × 2956 lines (Figure 1b) and is centered at latitude 45°33′19″N and longitude 12°16′49″E. The flight strip was acquired over a rural area close to Venice city (Italy; Figure 1a) on November 23, 2006 at 11:56 (GMT), using scan rates of 25 scans/s at an altitude of 1500m, corresponding to a 3-m ground-pixel resolution at the instrument's IFOV.

View Article: PubMed Central - PubMed

ABSTRACT

This paper describes a fast procedure for evaluating asphalt pavement surface defects using airborne emissivity data. To develop this procedure, we used airborne multispectral emissivity data covering an urban test area close to Venice (Italy).For this study, we first identify and select the roads' asphalt pavements on Multispectral Infrared Visible Imaging Spectrometer (MIVIS) imagery using a segmentation procedure. Next, since in asphalt pavements the surface defects are strictly related to the decrease of oily components that cause an increase of the abundance of surfacing limestone, the diagnostic absorption emissivity peak at 11.2μm of the limestone was used for retrieving from MIVIS emissivity data the areas exhibiting defects on asphalt pavements surface.The results showed that MIVIS emissivity allows establishing a threshold that points out those asphalt road sites on which a check for a maintenance intervention is required. Therefore, this technique can supply local government authorities an efficient, rapid and repeatable road mapping procedure providing the location of the asphalt pavements to be checked.

No MeSH data available.