Upload
leon-bennett
View
219
Download
2
Tags:
Embed Size (px)
Citation preview
Pacific Islands Imagery Pacific Islands Imagery ConsortiumConsortium
Status of ActivitiesStatus of Activities
Lisa M. Fischer
Pacific Islands Imagery Pacific Islands Imagery ConsortiumConsortium
Goals and ObjectivesGoals and Objectives
• Develop partnerships with federal, state and other entities to procure high resolution imagery/photography
• Create a strategy for obtaining consistent, recurring imagery on a cycle across the pacific Islands
• Maintain dialogue concerning needs for Pacific Islands
• Build capacity on Islands in image processing and interpretation
Pacific Islands Imagery ConsortiumPacific Islands Imagery Consortium
Accomplishments to DateAccomplishments to Date
• Set up consortium to acquire high resolution imagery covering American Samoa, Guam, Palau and CNMI
• Coordinated purchase with Radarsat, Internation Coordinated purchase with Radarsat, Internation for for QuickBird Imagery QuickBird Imagery
• 60 cm natural color ortho-mosaicked imagery60 cm natural color ortho-mosaicked imagery
• Completed purchase December 2003Completed purchase December 2003
• Satellite turned on over American Samoa, Satellite turned on over American Samoa, CNMI, CNMI, Guam and Palau Guam and Palau
Pacific Islands Imagery ConsortiumPacific Islands Imagery Consortium
Imagery UpdateImagery Update
• As of March 2004 satellite acquired northern CNMI islands
• Coordinating and gathering support data for geographic positioning and terrain correction for imagery
Pacific Islands Imagery ConsortiumPacific Islands Imagery Consortium
Vegetation Map Vegetation Map RefinementRefinement
• Finalize American Samoa map of refined forest types
• Send maps to American Samoa for field verification
• Refine 5-class landcover maps
• Subdivide the forest portion into association- based classification (strategy for all islands)
• Conduct training on pilot island to work with botanists and foresters to refine map
Pacific Islands Imagery ConsortiumPacific Islands Imagery Consortium
Vegetation Mapping Vegetation Mapping StrategyStrategy
• Create unsupervised classification within Create unsupervised classification within broad broad strata (e.g., forest) strata (e.g., forest)
• Fly low altitude aircraft with island Fly low altitude aircraft with island foresters foresters to “label” clusters to “label” clusters
• Refine classifications on-Island, where Refine classifications on-Island, where possible, possible, and verify in the field and verify in the field
• Capacity building component – sending Capacity building component – sending image image analysts to islands to train in use of image analysts to islands to train in use of image processing, where possible processing, where possible
Pacific Islands Imagery ConsortiumPacific Islands Imagery Consortium
Classification SchemesClassification Schemes
• Based on Mueller-Dombois
• Slightly different for each Island
• Association based
• Include primary species and secondary forest
Pacific Islands Imagery ConsortiumPacific Islands Imagery ConsortiumDraft Association-Based Draft Association-Based
Classification Scheme - GuamClassification Scheme - Guam
ForestForest
NorthernNorthernSouthernSouthern
Artocarpus-Artocarpus-FicusFicus
MammeaMammeaCordiaCordia
MerrilliodendroMerrilliodendron-Ficusn-Ficus
PandanusPandanus
Ravine ForestRavine Forest
Swamp ForestSwamp ForestSavanna Savanna Reed MarshReed Marsh
Other ?Other ?
Input from specialists will be critical
Pacific Islands Imagery ConsortiumPacific Islands Imagery Consortium
Change DetectionChange Detection
• Historic data exists for most islands
• Completed refined vegetation maps will be used with historic maps for change detection
Lowland tropical rainforestLowland tropical rainforest
Montane rainforestMontane rainforest
ClearedCleared
Lowland shrubLowland shrub
Lowland grassLowland grass
UrbanUrban
MangrovesMangroves
WaterWater
Historic Vegetation Map
Refined Map Based
on IKONOS 2002