pacific islands imagery consortium status of activities lisa m. fischer

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


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


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


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


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


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


http://www.fs.fed.us/r5/spf/about/fhp-pacific-basin.shtml

Visit the WebVisit the Web

Maps and data will soon be on the site for downloading and viewing

pacific islands imagery consortium status of activities lisa m. fischer

Documents

quickbird imagery

recurring imagery

northern cnmi islands

island association

historic maps

support data

image analysts

use of image processing