Spatially Locating FIA Plots from Pixel Values

Greg C. C. Liknes; Geoffrey R. Holden; Mark D. D. Nelson; Ronald E. McRoberts

Treesearch

Spatially Locating FIA Plots from Pixel Values

Informally Refereed

Authors:

Greg C. C. Liknes, Geoffrey R. Holden, Mark D. D. Nelson, Ronald E. McRoberts

Year:

2005

Type:

General Technical Report

Station:

Northern Research Station

Source:

In: McRoberts, Ronald E.; Reams, Gregory A.; Van Deusen, Paul C.; McWilliams, William H.; Cieszewski, Chris J., eds. Proceedings of the fourth annual forest inventory and analysis symposium; Gen. Tech. Rep. NC-252. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 99-103

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Abstract

The USDA Forest Service Forest Inventory and Analysis (FIA) program is required to ensure the confidentiality of the geographic locations of plots. To accommodate user requests for data without releasing actual plot coordinates, FIA creates overlays of plot locations on various geospatial data, including satellite imagery. Methods for reporting pixel values associated with FIA plots that reduce the likelihood of inadvertent release of plot locations were tested. The number of plots that can be correctly located using only pixel values was reduced by perturbing image band values, averaging band values of neighboring pixels, and reducing the number of image bands.

Parent Publication

Proceedings of the fourth annual Forest Inventory and Analysis symposium

Citation

Liknes, Greg C.; Holden, Geoffrey R.; Nelson, Mark D.; McRoberts, Ronald E. 2005. Spatially Locating FIA Plots from Pixel Values. In: McRoberts, Ronald E.; Reams, Gregory A.; Van Deusen, Paul C.; McWilliams, William H.; Cieszewski, Chris J., eds. Proceedings of the fourth annual forest inventory and analysis symposium; Gen. Tech. Rep. NC-252. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station. 99-103