Szczegóły

Tytuł artykułu

Using a GEOBIA framework for integrating different data sources and classification methods in context of land use/land cover mapping

Tytuł czasopisma

Geodesy and Cartography

Rocznik

2018

Wolumin

vol. 67

Numer

No 1

Autorzy publikacji

Słowa kluczowe

data fusion ; random forest ; supervised classification ; Sentinel-2

Wydział PAN

Nauki Techniczne

Abstrakt

Land use/land cover (LULC) maps are important datasets in various environmental projects. Our aim was to demonstrate how GEOBIA framework can be used for integrating different data sources and classification methods in context of LULC mapping.We presented multi-stage semi-automated GEOBIA classification workflow created for LULC mapping of Tuszyma Forestry Management area based on multi-source, multi-temporal and multi-resolution input data, such as 4 bands- aerial orthophoto, LiDAR-derived nDSM, Sentinel-2 multispectral satellite images and ancillary vector data. Various classification methods were applied, i.e. rule-based and Random Forest supervised classification. This approach allowed us to focus on classification of each class ‘individually’ by taking advantage from all useful information from various input data, expert knowledge, and advanced machine-learning tools. In the first step, twelve classes were assigned in two-steps rule-based classification approach either vector-based, ortho- and vector-based or orthoand Lidar-based. Then, supervised classification was performed with use of Random Forest algorithm. Three agriculture-related LULC classes with vegetation alternating conditions were assigned based on aerial orthophoto and Sentinel-2 information. For classification of 15 LULC classes we obtained 81.3% overall accuracy and kappa coefficient of 0.78. The visual evaluation and class coverage comparison showed that the generated LULC layer differs from the existing land cover maps especially in relative cover of agriculture-related classes. Generally, the created map can be considered as superior to the existing data in terms of the level of details and correspondence to actual environmental and vegetation conditions that can be observed in RS images.

Wydawca

Commitee on Geodesy PAS

Data

2018.06.15

Typ

Artykuły / Articles

Identyfikator

ISSN 2080-7636

DOI

10.24425/118699

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