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Not Georeferenced. Historic aerial photographs of Pennsylvania. |
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Not Georeferenced. Historic aerial photographs of Pennsylvania. |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>These aerial images were obtained from 9"x9" film roll. The film was gifted to the Donald W. Hamer Center for Maps and Geospatial Information in 2021. These photos of the Centre Region are at a 1”:9600’ scale. They were captured in April 1949. There are 177 scans at 800dpi. These scans provide partial coverage of Centre County, PA, including the Penn State University Park campus and surrounding towns. To generate approximate historic aerial photo center points – photos were aligned and georeferenced in three dimensions using Agisoft Metashape and using a minimum number of ground control points, typically between 5 and 12 depending on the size of the project. Estimates of each camera pose, including geographic coordinates, were then exported to create a center point index for the collection. This center point index is intended to facilitate discovery and access, but not for research purposes. </SPAN><SPAN>Historic aerial photograph tile indexes were generated by staff of the Donald W. Hamer Center for Maps and Geospatial Information in ESRI ArcGIS Pro. Each tile Index is based on the collection’s center point index. Photo tile size and rotation were estimated using sample georeferenced photos.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The User shall save the Commonwealth harmless from any suits, claims or actions arising out of the use of the data files or accompanying documentation, or arising out of any defect in the data files or accompanying documentation. The Commonwealth excludes any and all implied warranties and makes no warranty or representation with respect to the data files or accompanying documentation, including quality, performance, merchantability, and fitness for a particular purpose. These data files and documentation are provided AS IS and the User assumes the entire risk as to their quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.</SPAN></P></DIV></DIV></DIV> |
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| title:
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Penn State University Park/Centre County PA 1949 Aerial Photos |
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| tags:
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["imageryBaseMapsEarthCover","digital image map","aerial photograph"] |
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en-US |
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150000000 |
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