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Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

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Page 1: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Created byDenver Harper (IGS)Chris Dintaman

(IGS)Alex Zlotin (ESRI)Funded by Indiana Dept. ofTransportation(INDOT)

Indiana Geological Survey (IGS)

Page 2: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Collected by the Soil Conservation Service (NRCS) of the U.S.D.A.

Started in late 1930s

Collected as county-based surveys

Used for agricultural and topographic mapping

Compiled in various archival collections

Page 3: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Size = 9 x 9 inches

Date of collection

Unique ID number

Page 4: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Significant overlap for stereo viewing

Usually N-S flight lines

Several hundred photos per county per year

Page 5: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Created to facilitate retrieval

Individual photos were physically mosaicked and then re-photographed

Photomosaics are low-resolution

Page 6: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

951 photo-mosaic index maps, showing locations of 113,035 individual photos

39,992 individual photos

Page 7: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

2005 - Scanned by Historical Information Gatherers, Inc.• Photomosaics scanned at 300 dpi• Individual photos scanned at 600 dpi• Scans of individual photos are not available

for public distribution• Upon request, IGS personnel will re-scan

individual photos at 800 dpi

Page 8: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

2006 – Photomosaics georeferenced by IGS• ArcGIS georeferencing tool• Leica Image Analyst extension for ArcGIS

used to mosaic index maps that were split into parts

• Loaded into SDE as raster catalog

Page 9: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

2007 - Point index layer completed by IGS• A point was placed

over each ID number on each photomosaic (113,035 points)

• Each point was attributed with county name, year, photo ID, flight orientation, and availability from various archives

• Loaded into SDE

Page 10: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

2007-2008 - IHAPI interactive map was developed and made public on January 23

Page 11: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Purpose: Create an interactive map, so that the public can obtain historical aerial photos of interest without leaving their home or office.

IHAPI Features• ESRI ArcIMS AXL-based map service• Customized definition queries are accessed

through the user interface to display the photomosaics and ID points

• Customized interface to assist users in finding their site of interest

Page 12: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Read the instructions or watch the narrated video tutorial

Open the interactive map (http://igs.indiana.edu/IHAPI)

Specify your county of interest

Select your year of interest

Find your site of interest• Zoom tools• Locate by address or coordinates• Reference layers

Determine identification number

Contact archival collections (such as IGS) for copies of high-resolution photos

Page 13: Created by Denver Harper (IGS) Chris Dintaman (IGS) Alex Zlotin (ESRI) Funded by Indiana Dept. of Transportation (INDOT) Indiana Geological Survey (IGS)

Http://igs.indiana.edu/IHAPI

Find historical aerial photos showing the site of the football stadium of Indiana University