Pascucci Simone, Bassani Cristiana, Palombo Angelo, Poscolieri Maurizio, Cavalli Rosa
National Research Council, Institute of Methodologies for Environmental Analysis, C.da S. Loja - Zona Industriale, Tito Scalo (PZ), 85050, Italy.
National Research Council, Institute of Atmospheric Pollution, Via Fosso del Cavaliere, 100, Roma, 00133, Italy.
Sensors (Basel). 2008 Feb 22;8(2):1278-1296. doi: 10.3390/s8021278.
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.
本文介绍了一种利用机载发射率数据评估沥青路面表面缺陷的快速方法。为开发此方法，我们使用了覆盖意大利威尼斯附近一个城市测试区域的机载多光谱发射率数据。在本研究中，我们首先使用分割程序在多光谱红外可见成像光谱仪（MIVIS）图像上识别并选择道路的沥青路面。接下来，由于在沥青路面中，表面缺陷与油性成分的减少密切相关，而油性成分的减少会导致表层石灰石含量增加，因此利用石灰石在11.2μm处的诊断吸收发射率峰值从MIVIS发射率数据中检索出沥青路面表面出现缺陷的区域。结果表明，MIVIS发射率能够确定一个阈值，该阈值可指出那些需要进行维护检查的沥青道路路段。因此，这项技术可以为地方政府当局提供一种高效、快速且可重复的道路测绘程序，确定需要检查的沥青路面位置。
