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Título:
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Terrain classification using ToF sensors for the enhancement of agricultural machinery traversability
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Autor/a:
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Yandun, Francisco J.; Gregorio López, Eduard; Escolà i Agustí, Alexandre; Rosell Polo, Joan Ramon; Torres-Torriti, Miguel; Auat Cheein, Fernando A.
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Notas:
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Ground properties influence various aspects of mobile machinery navigation including localization, mobility status or task execution. Excessive slipping, skidding or trapping situations can compromise the vehicle itself or other elements in the workspace. Thus, detecting the soil surface characteristics is an important issue for performing different activities in an efficient, safe and satisfactory manner. In agricultural applications, this point is specially important since activities such as seeding, fertilizing, or ploughing are carried on within off-road landscapes which contain a diversity of terrains that modify the navigation behaviour of the vehicle. Thus, the machinery requires a cognitive capability to understand the surrounding terrain type or its characteristics in order to take the proper guidance or control actions. This work is focused on the soil surface classification by implementing a visual system capable to distinguish between five usual types of off-road terrains. Computer vision and machine learning techniques are applied to characterize the texture and color of images acquired with a Microsoft Kinect V2 sensor. In a first stage, development tests showed that only infra-red and RGB streams are useful to obtain satisfactory accuracy rates (above 90%). The second stage included field trials with the sensor mounted on a mobile robot driving through various agricultural landscapes. These scenarios did not present illumination restrictions nor ideal driving roads; hence, conditions can resemble real agricultural operations. In such circumstances, the proposed approach showed robustness and reliability, obtaining an average of 85.20% of successful classifications when tested along 17 trials within agricultural landscapes.
This work was supported by the National Commission for Scientific and Technological Research of Chile under grant CONICYT-PCHA/Doctorado Nacional/2015-21150694, grant FONDECYT – Chile 1171431, FB0008,
DGIIP-UTFSM Chile and University of Lleida, Spain. |
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Materia(s):
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-Agricultural robotics
-Terrain Classification
-Pattern recognition
-ToF sensors
-Kinect |
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Derechos:
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cc-by-nc-nd, (c) Elsevier, 2017
(c) International Society for Terrain-Vehicle Systems, 2017
http://creativecommons.org/licenses/by-nc-nd/4.0/
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Tipo de documento:
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Artículo
Artículo - Versión aceptada |
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