Figure A3C.1: Process for the development of LCDB2

Text description of figure

There are seven main steps in the development of LCDB2.

1. Image Acquisition

• Summer 2001 / 2002

2. Image Processing

• Pan sharpen ETM+ imagery to 15 m
• Generate 15 m pixel DTM’s
• Ortho-rectify imagery
• Supply source imagery and ortho-rectified imagery to Project Manager

3. Spectral Integrity Check

• Remove topographic effect to produce flattened imagery
• Perform spectral integrity check of LCDB1 with flattened imagery
• Highlight pixels that deviate from LCDB1 class
• Supply spectral integrity check image to Project Manager

4. LCDB2 GIS processing (direct interaction with steps 5 and 6)

• Correct LCDB1 classifications and generalisation errors
• Confirm actual land cover changes between image dates
• Code Type of land cover change
• Supply and edit vectors for field check

5. Field Checking (direct interaction with steps 4, 6 and 7)

• Verify draft land cover classes
• Supply hardcopy of recommended edits of draft classification to contractors at stage 4

6. Accuracy Assessment (direct interaction with steps 4 and 5)

• Decide on sampling intensity by class, acquire relevant aerial photography and ancillary data to complete the work
• Publish accuracy assessment

7. Completed LCDB2

• Deliver LCDB2 to stakeholders
• Compile metadata
• Distribute via database custodian
• Write user manual