Geog474 - Introduction to Environmental Remote Sensing

Image Statistics

In-Class Exercise 5

Band 1 2 3 4 5 6 7 Mean Standard deviation Variance Minimum Maximum Range Questions:1. Which band has lowest BV? Highest BV? Which band exhibits the greatest range in BV? Explain physical importance of these band differences?2. Which band exhibits the smallest variance and standard deviation?

Covariance matrix

Bands

Correlation Matrix

Band

Questions:

Example Covariance and Correlation Matrix from Landsat TM 6 band image of Delmarva Peninsula3. Which bands are highly correlated? What does this suggest about the bands that are highly correlated?

4. Which bands have low correlation? Explain why these bands are uncorrelated?

*Revised October 23, 2002*