34 research outputs found
Caracterização do óleo das sementes de Pachira aquatica Aublet para aproveitamento alimentar
Capacidade antioxidante total de óleos vegetais comestíveis: determinantes químicos e sua relação com a qualidade dos óleos
Development of a Multi-Sensor System for Road Condition Mapping
We present a concept for a vehicle based road condition mapping system using infrared spectrometers, high resolution RGB cameras
and a laser scanner. Infrared spectrometry is employed to monitor the deterioration of the surface material and pavement condition,
in particular by aging. High resolution RGB imaging enables automatic asphalt crack detection and provides base images for
spectrometry spots. Laser scanning aims at the detection of geometrical road irregularities and pavement failures such as potholes
and ruts. These three major recordings contribute to the analysis of the pavements condition. All mapping sensors are synchronised
with a navigation sensor to collect geo-referenced data. The concept of road condition mapping relies on a separate analysis of the
different sensor data which are related to road sections. Processing results like the percentage of the road section area related to
cracks, pot holes, ruts etc. are merged to achieve an assessment for the road section. The processes for assessing deterioration from
the spectrometer data, the detection of ruts from the laser data and cracks from the images are discussed in detail and outlined with
some experiments