Land Use Land Cover Mapping

Urban development constantly changes the face of our planet. Satellite imagery can be used to provide an up-to-date picture of the state of land use and land cover on a large scale. Repeated satellite acquisition allows for a changing picture of the urban environment to be created which is essential for planning purposes.

 

Background

TCarta combines Earth Observation satellite imagery with customized remote sensing algorithms to classify the landscape and deliver a GIS enabled asset inventory. Customers utilize this powerful planning tool to accurately map their resources, objectively understand change, and manage policy and decision making.

Our experienced Team assists clients in understanding the best product for their needs. We provide data at a wide range of mapping scales and resolutions and use our expert knowledge to define a landscape classification schema that is entirely suited to the final application.

Data sample showing depiction of Land Use and Land Cover overlaid on high resolution satellite imagery

Data sample showing depiction of Land Use and Land Cover overlaid on high resolution satellite imagery.

 

Satellite image processing

TCarta deploys an image processing and segmentation work flow where distinct spectral characteristics are identified within satellite images, which are then grouped into homogeneous pixel areas. Segments partition imagery into meaningful objects by assessing their spectral and spatial characteristics. TCarta implements Minimum Mapping Units (MMUs) that align with source satellite imagery and are suited to final data applications. The MMU is the minimum size or dimensions for a feature to be mapped for a given map scale. For maps to be meaningful, cartographic generalization rules are implemented, many of which are automated within GIS software.

High Resolution satellite imagery for feature extraction

High Resolution satellite imagery for feature extraction

 
Feature Classification of marine habitat areas

Feature Classification of marine habitat areas

 

Satellite image classification

As part of the image processing workflow, the landscape is categorized against a classification schema. The schema is determined by the characteristics of the landscape and environment, as well as the intended end uses of the data and required thematic detail. TCarta has delivered mapping with over 50 different categories, each of which is carefully defined to ensure meaningful outputs.

Depending upon client needs, a mixture of natural, semi-natural as well as human land use categories can be deployed.

Habitat mapping and Environmental Impact Assessments (EIAs)

Environmental policies and effective conservation strategies require detailed information of the state of land habitats. Satellite derived habitat mapping provides this information quickly compared to traditional survey methods, giving a snapshot of the state of environments.

TCarta delivers mapping data applied to understand and monitor rapid human development. Satellite imagery provides a snapshot in time that has been interpreted to help manage urbanization, infrastructure development and use of natural resources. Knowledge of the state of the landscape has helped to protect ecosystems.