The relationship between sensor geometry, vegetation-canopy geometry and image variance
- 1 June 1990
- journal article
- letter
- Published by Taylor & Francis in International Journal of Remote Sensing
- Vol. 11 (6), 1075-1083
- https://doi.org/10.1080/01431169008955079
Abstract
The geometry of the sensor and the vegetation canopy have an effect upon the variance of the detected spectral response of a single cover type in an image. The procedure for calculating the size of the ground resolution element (GRE) for a Daedalus ATM scanner is outlined, and examples of changes in variance for four land-cover types are presented. Image variance was found to be inversely related to sensor view angle, owing to the increased size of the GRE, the increased overlap of adjacent elements, and the changing proportions of canopy components viewed by the sensor.This publication has 12 references indexed in Scilit:
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