alexa Using Object Based Image Analysis To Monitor Soil Aggregate Breakdown Under Natural Conditions | 65055
ISSN: 2168-9792

Journal of Aeronautics & Aerospace Engineering
Open Access

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3rd International Conference and Exhibition on Satellite & Space Missions
May 11-13, 2017 Barcelona, Spain

Irena Ymeti
University of Twente, Netherlands
ScientificTracks Abstracts: J Aeronaut Aerospace Eng
DOI: 10.4172/2168-9792-C1-016
Abstract
Statement of the Problem: Monitoring of soil aggregate breakdown still remains a challenge. Using remote sensing approach changes on soil surface such as soil aggregate breakdown that occur over a short period of time can be detected in a fast and non-destructive way. To understand these changes, it is important to monitor the interaction between soil surface and the surrounding environment at high temporal resolution. Methodology & Theoretical Orientation: We designed an outdoor experiment to monitor soil aggregate breakdown under natural conditions at a micro-plot scale using a regular digital camera. Five soils susceptible to detachment (silty loam with various organic matter content, loam and sandy loam) were photographed each day. We collected images and weather data from November 2014 until February 2015. When an image has a sufficient high spatial resolution, pixels are smaller than the object so grouping of pixels is possible in order to obtain real-world homogeneous features. Object-based image analysis (OBIA) approach, which allows estimation of the image area occupied by soil aggregate, was used. OBIA consider not only the spectral reflectance and neighbor relations, but also the shape and the size of objects. Findings: Our results show that the image area covered with soil aggregate decreases over time. The trigger that initiates the decrease of area covered with aggregate is freezing-thawing followed by the rain events. Conclusion & Significance: This research concludes that when dealing with images with very high spatial resolution object based approach should be considered for monitoring soil aggregate breakdown. The OBIA approach allows quantifying the image area covered with soil aggregate.
Biography

Irena Ymeti is pursuing her PhD in Earth Systems Analysis department at University of Twente, Netherlands and working on monitoring soil aggregate breakdown using Remote Sensing Technology. She started to work in Geosciences, Energy, Water and Environment at Polytechnic University of Tirana, Albania. Building a Geo-Information (GIS) and RS laboratory for processing and analyzing data for earth science applications was the focus of her work.

Email: [email protected]

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