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Overview of Photo Management & SWAN Applications for Ecological Monitoring

Southwest Alaska Network. Overview of Photo Management & SWAN Applications for Ecological Monitoring. Dorothy Mortenson National Park Service Southwest Alaska Network April 2008. SWAN Photo Projects. Broad Categories of Photographs. What’s the difference in managing?.

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Overview of Photo Management & SWAN Applications for Ecological Monitoring

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  1. Southwest Alaska Network Overview of Photo Management &SWAN Applications for Ecological Monitoring Dorothy Mortenson National Park Service Southwest Alaska Network April 2008

  2. SWAN Photo Projects April 2008

  3. Broad Categories of Photographs April 2008

  4. What’s the difference in managing? • Different users and skill levels • Workflow • Metadata fields • Metadata storage • Long-term storage options • Functionality for users April 2008

  5. “Pretty Pix”General Photo Collection Covered more by Chris Dietrich later on April 2008

  6. Pretty Pix Requirements • Examples: • ThumbsPlus • Portfolio • ACDSee • Adobe Bridge Catalog System • User friendly for most staff • Commercial off the shelf software • Workgroup accepted Directory Structure • Organized by topic • Central library and/or on web Metadata simple • Photographer • Date • Description • Subject • Place name • Credits • Restrictions April 2008

  7. April 2008

  8. Storing Attributes: Custom Fields User Fields in Catalog • Define the fields you need • Set a template April 2008

  9. Storing Attributes: IPTC IPTC: International Press Telecommunications Council • Make do with existing fields • Stays with the image April 2008

  10. Alaska Regional Office • Consolidate best park photos • Migrate to NPS Focus • Track what was sent over time Best Park Photos April 2008

  11. Alaska Regional Office Initial Thoughts: • Request 100 photos from each park • Put in an “In box”, with brief metadata in a spreadsheet. • Review quality of photos • Use ThumbsPlus to catalog photos • User fields includes NPS Focus requirements and tracking tools • Submit to NPS Focus • ROBOCOPY to parks or parks ROBOCOPY to Region April 2008

  12. Alaska Regional Office Still Considering: • Workflow – parks or region to maintain master files – or both depending on the park. • Use of IPTC – keeps attributes with photo if used elsewhere April 2008

  13. ThumbsPlus Trick If the attribute is already in the header, (EXIF or IPTC), add a user field called the exact same name. User field will use value in the header. Will update automatically too. Set up user fields first. April 2008

  14. Use the User Field defined in Access to use on a website. IPTC: “Caption” User Field: “Caption” Bring into Photoshop and IPTC attributes are there. April 2008

  15. Gotcha’s • IPTC doesn’t have all the fields you will want; have to agree what information goes into where. • Requires a little more knowledge that what most people want to put into it casually April 2008

  16. Vertical Aerial Photographs 1950’s photo of Jojo Lake Katmai NP&P April 2008

  17. Vertical Photo Requirements Catalog System • Tied to GIS, in some way Directory Structure • Organized by park, date, flight attributes or order number • Long-term storage, co-located with GIS data Metadata • Usually completed as a group • Done in ArcCatalog • Calibration files, if you have them. Other • High quality scanning (1800 dpi) April 2008

  18. Cheap to Expensive spatial links: Index generated to locate where the photo (photo center point, flight line, or polygon footprint) Geo-referenced individual frames or combine into mosaic (not an ortho product, no DEM required) Ortho-rectified of photos using DEMs. Vertical Aerial Photographs April 2008

  19. 2 1 3 Vertical Aerial Photographs: Using index and hyperlink 4 April 2008

  20. Vertical Aerial Photographs: Geo-referenced April 2008

  21. Vertical Aerial Photographs: Ortho-rectified April 2008

  22. Ortho-photographs April 2008

  23. Data Photographs Geospatial Optional April 2008

  24. Bird Counts Lake Core Samples April 2008

  25. Data Photos Requirements Catalog System • User defined attributes • May or may not be GIS related Directory Structure • Organized by project workflow • Long-term storage, co-located with project data Metadata • Standard fields • User fields – site location, custom subject list April 2008

  26. Considerations for Data Photos • Which Interface? • Tabular : Query by Database • GIS : Query in ArcMap • GPS or no GPS April 2008

  27. Data Photos – General April 2008

  28. ThumbsPlus April 2008

  29. Explorer Navigation PREVIEW TABS - INFO April 2008

  30. April 2008

  31. Repeat Photography April 2008

  32. April 2008

  33. April 2008

  34. April 2008

  35. Data Photographs Geospatial Required N 59°52’ 34.70” W 152° 56’ 53.80” 26 ft Above MSL NAD 83 April 2008

  36. Two Methods Geotagging photos with no GPS (older photos) Geotagging photos with GPS Data Photos - Geospatial April 2008

  37. Considerations - Geospatial Photos Attribute Centric Decimal Degree coordinates • E.g. 63.2345, -149.32566 Represented in various forms (text, NAD27, NAD83, estimated vs. actual) Enter Camera specifics (e.g., date) Archive information (e.g. permissions, photographer) April 2008

  38. Repeat Photography Hyperlinked from coordinates in database April 2008

  39. Considerations - Geospatial Photos Location • Location of the photo subject • Location of person taking the photo (The Photographer) April 2008

  40. Location of the Photo Subject Photo Subject The Photographer April 2008

  41. GeoTagging Photos with GPS April 2008

  42. GPS Antenna Photo Subject Concept Averaged GPS Position N 60º 05’ 01.2” W 152º 34’ 44.6” April 2008

  43. The Photo Supplies the What Look Direction Where When April 2008

  44. Where Could the Location Go? • Option 1 – In an attribute table that associates the photo with a point feature - Hyperlinking • Option 2. – Store Inside the photo • EXchangeableImage File Format Preferred April 2008

  45. EXchangeableImage File Format • Time / camera characteristics are written inside the JPEG file in a section called the EXIF tag. • Standard in all digital formats • GPS included…. • Latitude • Longitude • Altitude • GPS time • GPS satellites used for measurement • GPS receiver status • GPS measurement mode • …..37 Fields in all April 2008

  46. EXIF is the Way! • Advantages • Almost Zero Risk in Losing / Scrambling Location • Allows for AutoLocation in many environments • Web tools – Flickr, Picasa, Google Earth…. • GIS Tools are coming around… finally! • Capitalize on Growing Recognition of EXIF • ArcPhoto Tools – ArcGIS Extension with enhanced digital photo recognition • ArcGIS 9.2 can read EXIF as Metadata • ArcPad 7.X supports photo layers – XML file with *.APH extension April 2008

  47. Offsets Are Useful April 2008

  48. Other GeoTagging With GPS Tips • Set the Camera time to match GPS time before you begin • Never modify photos after collection • Store only WGS84 or NAD83 datum based coordinates • More tips SWAN website or AKRO GPS website April 2008

  49. Data Photograph Summary Begin storing geospatial info with photos Most effective method is to choose EXIF writing solutions April 2008

  50. Case Study: Glacier Extent Monitoring What are the changes and trends in glacier extent? April 2008

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