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Click on a year to Explore that years' data:
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Oblique Imagery Sample Aerial Photography on a Tile-per-Tile Basis & Google Earth
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Below are some sample images courtesy of Woolpert Inc. that illustrate "oblique" photography.
These images are centered on the Clinton County Courthouse located at 46 S South Street Wilmington, Ohio.
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We are on occasion asked about the process used to create the older imagery you can find on this web page.
First, we start with scanning. Each of the 136 images (as in the 1968 Imagery Collection) were scanned into a colored tiff image, at 300 DPI (dots per inch).
Each image ends up between 135 and 145 MB in size, which is simply to large to work with on most computer systems and software. The final image that is distributed by the GIS Department is in MrSID file format, which is a compressed version of the original rectified tiff image. Usually the tiff images go from 145 MB to about 5 MB as a MrSID image.
The individual images are converted to a MrSID file format and made available on the web pages for each year.
You can click on file name on the index map and see the MrSID image for that particular area. One of the neatest things that you can do is look at the index in Google Earth (where available) and see the MrSID image and the Google Earth image at the same time, in different windows.
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Raw Scanned Image
This is scanned image, exactly as the original appeared. You can see the date the image was taken in the upper left, and index numbers in the upper middle and upper right corner.
Aerial Photography Available on a Tile per Tile Basis
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Click here for a screenshot showing a 1950 image using ArcGIS Explorer.
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This index map shows the general locations of the images found below. Each image overlaps the images that surround it by as much as 60 percent.
Click on the index above and find the area that you want to view a 1950 aerial photograph of.
Note the Grid name. Then, click on that Grid name below...