Ground Truthing and Cluster Identification

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Ground Truthing and Cluster Identification

• Sean Healey
• Forestry
• Richard Wallace
• Aquatic Science

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Compass example
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Kellie Protocol

• Map with arrows

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Miles Protocol
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Ground Truthing

• What was hard
• Finding access to the points

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Ground Truthing

• What was hard
• Classifying the cover

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Ground TruthingThoughts

• What works
• Target points then add new ones as opportunity
  allows
• Work edges/boundaries/borders
• Use a length reference
• Good Ideas
• Enter quality reference notes
• Backup with photographs
• Maps and magnetic compasses are still good
• No shorts!

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Avenues of Analysis

• Unsupervised - general
• Supervised - focused on forestry
• Modeling of canopy cover

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North
South
East
West
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Our classes

• Maroon 10-50 year old conifers
• Orange New plantation
• Yellow Deciduous Alder (5-25m)
• Dark Green Mature Conifers
• Pink new clearcut
• Light green bare soil, development

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Avenues of Analysis

• Unsupervised - general
• Supervised - focused on forestry
• Modeling of canopy cover

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Why not all cells were classified
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Image resulting from supervised Classification
based upon a forested sub-section
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Avenues of Analysis

• Unsupervised - general
• Supervised - focused on forestry
• Modeling of canopy cover

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Would you trust a model derived from this data?
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The original LANDSAT data was interpreted from
our Band 4 / canopy closure model
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Result from Band 4 / Canopy Cover Model
Dark areas have higher canopy closure
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Canopy Cover Classes
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Tyger! Tyger! Burning bright, In the FOREST of
the night, What immortal hand or eye Could frame
thy fearful symmetry?