Aerial Imagery GIS, 0813-640-777-64(TSEL) | Syndicads Aerial
High resolution aerial digital imagery to study natural ...
Transcript of High resolution aerial digital imagery to study natural ...
High resolution aerial digital imagery to study natural and anthropogenic activity, and interactive data visualization
• Background • Camera System • Data Collection • Image Extraction • Example Results
– Factors Affecting Identification Success – Representative details
• ReMOTe and data visualization
Outline
Background
• Technology trialed by Normandeau in 2011 Project funded by BOEM – Compared boat-based and aerial visual surveys – Turtles (10 x more than boat, 4x more than aerial) – Attraction and repulsion effects and observer
biases evident in visual data
Camera System
1360 feet flying altitude 1.5 cm GSD (capable of 0.5 cm GSD) Large footprint (710 m x 110 m) NY OPA = over 43,000 km2 Fast shutter speed Enhances the sharpness of the edges of the pixel
in cropped imagery Improves species identification particularly
moving/flying objects Better in low light conditions
Seasonal Differences
Maximize crew hours Avoid mid-day glare/glint Sea state < 4 Cloud base > 1,400 ft Visibility > 5 km Wind speed < 30 knots.
Image Extraction & 10% QC
Results 20% QC & 100% Endangered Species QC
Birds Marine Mammals Turtles Cartilaginous and Bony Fish Fish Shoals Boats
Gill Net
Birds: Over 20,000 in winter alone ID Success ~50 species
View of heads and bills affects bird identifications
100% cormorants, loons, and raptors identified to species
100% of all avian identifications classified to species group
88% gulls identified to species 81% shearwaters identified to species
75% terns identified to Sterna, which includes Roseate Tern Overall success 81% to species and 90% to genus/species such as Sterna
Birds: ID Success
BIRDS - Ducks: 8 Species
Black Scoter Bufflehead Common Goldeneye Gadwall King Eider Long-tailed Duck Surf Scoter White-winged Scoter
BIRDS - Gulls: 9 Species Black-legged Kittiwake Bonaparte's Gull Great Black-backed Gull Herring Gull Glaucous Gull Iceland Gull Laughing Gull Lesser Black-backed Gull Little Gull Ring-billed Gull
Gulls- Detail SPECIES # Flying
MEAN Height
MAX Height
Min Height
Black-legged Kittiwake
96 35.44 102.8 0.4
Bonaparte's Gull 390 46 162.5 0.7 Laughing Gull 136 45.99 173.2 0.3 Ring-billed Gull 45 61.51 164.3 0.8 Herring Gull 711 54.07 319.4 0.1 Lesser Black-backed Gull
4 37.18 108.9 2.5
Great Black-backed Gull
106 52.96 265.6 0.7
Marine Mammals - Over 2,500 ID Success
Subsurface animals ranked • Breaching • Near surface • Significantly submerged
49% dolphins identified to species 76% unidentified dolphins classed significantly submerged 96% whales identified to species
Marine Mammals – Over 4,500
Dolphins: 8 Species Atlantic Spotted Atlantic White-sided Common Bottlenose Harbor Porpoise Pilot Whale (unid) Risso’s Short-beaked Common Striped
Pinnipeds: 1 Species Gray Seal Whales: 6 Species Blue Common Minke Humpback Sperm Beaked Whale (unid) North Atlantic Right
Turtles- Over 600 ID Success
Overall identification success of 75% Turtles: 4 Species Green Kemp’s Ridley Leatherback Loggerhead
Rays – Over 8,000
Rays: 4 Species Bluntnose Stingray Bullnose Cownose Giant Manta
Sharks: Over 900 of 14 species
Including: Basking Shark Whale Shark Great White Shark Scalloped Hammerhead Bull Shark
Large Bony Fish – Over 1000
6% of summer targets 1% of fall targets
Fish Shoals – Over 6,600
Boats - 73
Commercial Shell fishing
Boats classed as Commercial, Recreational, or Cargo Commercial Dragger Gillnetter Lobsterboat Party boat Shellfisher Trawler
https://remote.normandeau.com
remote.normandeau.com- Maps
remote.normandeau.com- Heat Maps
Fish Shoals between 10 m and 40 m contours
remote.normandeau.com- Maps
General information Tracking Progress
Relative Abundance
Data Associated with Snags
Images
Questions?
Thank You