E Cognition User Summit2009 R Lucas University Wales National Vegetation Mapping

Revision of National Vegetation Mapping in Wales using eCognition Professor Richard Lucas University of Wales, Aberystwyth In collaboration with Environment Systems Countryside Council of Wales Definiens

Overview ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Wales or Cymru AU: Proud to be a Definiens Centre of Excellence

Phase 1 Habitat Mapping in Wales ,[object Object],[object Object],[object Object],[object Object]

What do ecologists observe? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What do RS scientists observe? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Pilot: Classification of habitats & agricultural land, Berwyn Mountains NE Wales Based on time-series of Landsat sensor data Rule-based approach that coupled knowledge of ecology with that of remote sensing scientists

The Approach to Mapping in Wales

Division of Wales into Projects ,[object Object],[object Object]

Pre-processing and Ancillary data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SPOT-5 (March) Landsat (March) SPOT-5 (April) IRS (May) Landsat (July) Landsat (Sept) Multiple sensors, seasonal observations

Landsat ASTER IRS SPOT Geometric Correction: Orthorectification

Standardization for data comparability ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Endmember Fractions & Indices ,[object Object],[object Object],PV Shade Photosynthetic vegetation Shade/moisture

Wet & Dry; Bogs, Bracken & Grassland Bogs (outlined in white) mapped by lower vegetation (photosynthetic) and greater moisture fraction (based on ASTER data). Areas of purple moor grass (black) and bracken (orange) mapped using a combination of SPOT non photosynthetic vegetation and shade/moisture fraction images.

Wales is a land of fields Image segmented using unit (field) boundaries Multi-resolution segmentation (using larger scale factors) applied within the unit boundaries Areas outside of field boundaries (mainly uplands) using a small scale factor (1 - 2 pixels)

Hierarchical Layers Super level Level 1 Sub level

Rules based on ecological knowledge ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dealing with Complex Mosaics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Fuzzy Membership ,[object Object],[object Object],[object Object],[object Object]

Fuzzy Membership ,[object Object]

Cambrian Mountains: An example of mapping complex habitats in the uplands

Cambrian Mountains: Example of mapping in uplands

Comparison of Habitat Maps Vexcel Aerial Photography Sub-habitat Classification Original Phase 1 Survey

Transferring to a Phase 1 Habitat Class ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Habitat classification Revised Phase 1 Classification

Examples of Revised Phase 1 Maps Black Mountains The Welsh Valleys Ceredigion

Revised Phase 1 Mapping for Blaenavon World Heritage Sites

Accuracy of Mapping ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Habitat Mapping and Monitoring in Wales ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Concept of a Rolling Program ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Use of Definiens Software ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Acknowledgements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],For further information email: [email_address] , [email_address] , [email_address]

E Cognition User Summit2009 R Lucas University Wales National Vegetation Mapping

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E Cognition User Summit2009 R Lucas University Wales National Vegetation Mapping