combining automated and manual techniques for accurate nwi ... · combining automated and manual...
TRANSCRIPT
![Page 1: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/1.jpg)
Combining Combining Automated and Manual Automated and Manual
Techniques for Accurate Techniques for Accurate NWINWI MappingMapping
Pamela SwintPamela Swint [email protected]@vt.edu
Kevin McGuckinKevin McGuckin [email protected]@vt.edu
Conservation Management InstituteConservation Management InstituteBlacksburg, VABlacksburg, VA
![Page 2: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/2.jpg)
Problem OverviewProblem Overview
• Wetland managers experience:– An increased demand for high resolution
wetland data– A need for a faster turn-around time
• We explore the efficiency of combining:1) Computer-assisted delineations2) Manual QA/QC
![Page 3: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/3.jpg)
Photo-interpretation/AttributionImage PUBHx
PUBHx
PFO1A
PSS1B
PUBHh
PFO1E
Classified MapTraditional Approach
![Page 4: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/4.jpg)
Image
Photo-interpretation/Attribution
Data Editing/Photo-interpretation/
Attribution
Image
Feature Analyst
PUBHx
PUBHx
PFO1A
PSS1B
PUBHh
PFO1E
Classified MapTraditional Approach
Hybrid Computer-Manual Approach
PUBHx
PUBHx
PFO1A
PSS1B
PUBHh
PFO1E
Classified Map
= AutomatedProcess
DeleteClutter
![Page 5: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/5.jpg)
Hybrid Computer-Manual Approach
= AutomatedProcess
PUBHx
PUBHx
PFO1A
PSS1B
PUBHh
PFO1E
Classified Map
ClutterDeletion
Image Feature AnalystData Editing/
Photo-interpretation/Attribution
![Page 6: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/6.jpg)
Feature Analyst InterfaceFeature Analyst Interface
![Page 7: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/7.jpg)
Feature Analyst InterfaceFeature Analyst Interface
![Page 8: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/8.jpg)
Feature Analyst InterfaceFeature Analyst Interface
![Page 9: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/9.jpg)
Feature Analyst InterfaceFeature Analyst Interface
![Page 10: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/10.jpg)
Example Search Patterns
Bullseye 3 (3x9) Bullseye 4 (3x13)Bullseye 1 (3x9)
Foveal Max. (3x33)
Bullseye 2 (3x17)
Circle Max. (3x97)
Manhattan Min. (3x5) Manhattan Max. (3x85)
Square Min. (3x9) Square Max. (3x81)
![Page 11: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/11.jpg)
How does FA compare How does FA compare to hand delineations?to hand delineations?
• Pond drawn at a zoom scale of 1:2,500
Yellow = FARed = Hand Delineation
1:1,000
![Page 12: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/12.jpg)
Case Study: Shirley PlantationCase Study: Shirley Plantation
![Page 13: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/13.jpg)
Step 1: Create Training SamplesStep 1: Create Training Samples
• Train FA on dark water features
![Page 14: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/14.jpg)
Step 2: Run Classification using Step 2: Run Classification using Default SettingsDefault Settings
![Page 15: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/15.jpg)
Step 3: Create Additional Training Step 3: Create Additional Training SetSet
• To capture the remaining water features
![Page 16: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/16.jpg)
Step 4: Classification Result using Step 4: Classification Result using Default SettingsDefault Settings
![Page 17: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/17.jpg)
Step 5: Merge ClassificationsStep 5: Merge Classifications
![Page 18: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/18.jpg)
Case Study: Northern AlaskaCase Study: Northern Alaska• ~ 530 square miles
![Page 19: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/19.jpg)
Alaska Case StudyAlaska Case Study• 1 Training Set; 30,000 features identified• ~ 3 hours total (2.5 hours for trial and
error, ½ hour to train and classify data)
![Page 20: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/20.jpg)
Final ProductFinal Product
![Page 21: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/21.jpg)
Hybrid Computer-Manual Approach
= AutomatedProcess
PUBHx
PUBHx
PFO1A
PSS1B
PUBHh
PFO1E
Classified Map
ClutterDeletion
Image Feature AnalystData Editing/
Photo-interpretation/Attribution
![Page 22: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/22.jpg)
Examples of ClutterExamples of Clutter
![Page 23: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/23.jpg)
Raw FA ResultsRaw FA Results-- clipped by soils, slopeclipped by soils, slope
~ 4500 polygons 1230 polygons
Final Wetland MapFinal Wetland Map-- with manual editingwith manual editing
![Page 24: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/24.jpg)
Hybrid Computer-Manual Approach
= AutomatedProcess
PUBHx
PUBHx
PFO1A
PSS1B
PUBHh
PFO1E
Classified Map
ClutterDeletion
Image Feature AnalystData Editing/
Photo-interpretation/Attribution
![Page 25: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/25.jpg)
Use of Ancillary GIS DataUse of Ancillary GIS Data• Datasets involved
– SSURGO Hydric soils– NHD– USGS Topographic maps– USGS 10m NED
![Page 26: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/26.jpg)
Comparison of Final Product Comparison of Final Product vsvsOriginal NWIOriginal NWI
Yellow = FARed = Original NWI
![Page 27: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/27.jpg)
Yellow = FARed = Original NWI
Comparison of Final Product Comparison of Final Product vsvsOriginal NWIOriginal NWI
![Page 28: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/28.jpg)
Minimum Mapping Unit Minimum Mapping Unit ComparisonComparison
• PUBH only; upstate New York area
![Page 29: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/29.jpg)
LLWW AttributionLLWW Attribution
• Landscape Position, Landform, WaterflowPath, Waterbody Type (LLWW)
• LLWW attribution uses both manual and automated methods
• LLWW Modifiers are added during wetland attribution/photo-interpretation process
![Page 30: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/30.jpg)
LLWW ModelLLWW Model• Model Inputs
– Cowardin wetlands, modifiers, flow assignments, and buffered stream network
![Page 31: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/31.jpg)
LLWW ModelLLWW Model• Step 1
– Assign landscape position and Waterbodytype based on Cowardin classification
Lakes Rivers Ponds Expand Codes Marine Estuarine
![Page 32: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/32.jpg)
LLWW ModelLLWW Model• Step 2
– Spatial and photo-interpreted attributes
Stream Value
Lakes Rivers
![Page 33: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/33.jpg)
LLWW ModelLLWW Model• Step 3
– Additional Attributions
Modifiers Landform Pond Modifiers
Clean-up
![Page 34: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/34.jpg)
How long does mapping wetlands How long does mapping wetlands this way take?this way take?
Upstate NY
Per USGS 1:24k Quad
Upstate NY
![Page 35: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/35.jpg)
How long does mapping wetlands How long does mapping wetlands this way take?this way take?
Upstate NY
Per USGS 1:24k Quad
Upstate NY
Low Contra
st, H
igh Complex
ity
High Contrast, Little Complexity
![Page 36: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/36.jpg)
How long does mapping wetlands How long does mapping wetlands this way take?this way take?
Per USGS 1:24k Quad
Inland VA
Upstate NY
![Page 37: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/37.jpg)
How long does mapping wetlands How long does mapping wetlands this way take?this way take?
Per USGS 1:24k Quad
Inland VA
Upstate NY
![Page 38: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/38.jpg)
Task BreakTask Break--downdown
![Page 39: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/39.jpg)
ConclusionConclusion
• Combination of manual and automated techniques provide efficiency
• Processing time varies with the amount of wetland complexity involved
![Page 40: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/40.jpg)
ConclusionsConclusions
• High contrast features One-pass Feature Analyst classification
• Low contrast features Multi-pass FA classification and/or manual delineation
• CMI is looking to asses FA in other regions (southwest, mountainous terrain...etc)
![Page 41: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/41.jpg)
AcknowledgementsAcknowledgements
U.S. Fish and WildlifeRalph Tiner, John Swords, Herb Bergquist
Virginia TechBeth Pokorski, Staci Hudi, Tim Brown, Jason
Herman, Arvind Bhuta, Hanna Mabe
![Page 42: Combining Automated and Manual Techniques for Accurate NWI ... · Combining Automated and Manual Techniques for Accurate NWI Mapping Pamela ... classification and/or manual delineation](https://reader031.vdocuments.net/reader031/viewer/2022011820/5eab1ff75003f37c8a319253/html5/thumbnails/42.jpg)
Contact InfoContact Info
Pamela Swint ([email protected])Kevin McGuckin ([email protected])
Scott Klopfer ([email protected])
Conservation Management Institute1900 Kraft Drive, Suite 250
Blacksburg, VA 24061540-231-7348