Estimating the appropriate resolution for the interpretation of digital images for forestry purposes using a texture algorithm
Date
1997
Authors
Bergmans, Geraldine Johanna
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Abstract
The objective of this research is to determine the most appropriate resolution for viewing digital orthophotos and stereomodels for forestry purposes. Resolution and scale are critical variables in the interpretability of an image. A subjective analysis of interpretability as well as an objective analysis of local variance, are conducted on images of the Invermere Forest District, BC, at varying resolution. Determining interpretability from a subjective point of view involves the ranking of responses of certified photo interpreters who have viewed images of aggrading resolution. Determining the local variance of an image attempts to emulate the textural component of an image. The subjective and objective results are compared to reveal that calculating the local variance of various resolutions of an image can indicate the most appropriate resolution at which to view digital orthophotos and steromodels for forestry purposes.