Estimating tree heights from shadows on vertical aerial photographs

Earl J. Rogers

Treesearch

Estimating tree heights from shadows on vertical aerial photographs

Informally Refereed

Authors:

Earl J. Rogers

Year:

1947

Type:

Science Perspectives

Station:

Northern Research Station

Source:

Station Paper NE-12. Philadelphia, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 1-16.

Download (PDF 1.36 MB)

Download (PDF 1.36 MB): https://research.fs.usda.gov/download/treesearch/13142.pdf

Abstract

Aerial photographs are now being applied more and more to practical forestry - especially to forest survey. Many forest characteristics can be recognized on aerial photographs in greater detail than is possible through ground methods alone. The basic need is for tools and methods for interpreting the detail in quantitative terms.

Citation

Rogers, Earl J. 1947. Estimating tree heights from shadows on vertical aerial photographs. Station Paper NE-12. Philadelphia, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 1-16.