Geography/GIS Once you have completed your graphs for each of the targets, cut a

Question

Geography/GIS

Once you have completed your graphs for each of the targets, cut and paste the graphs into your lab document. Then, using the graphs, determine which of the bands available to you is best for discriminating between the following target classes:

a. Green Sweetgum and Red Sweetgum

b. Yellow Sweetgum and Green Sweetgum

c. Brown Sweetgum and Red Sweetgum

d. Brown Sweetgum and Grass

e. Grass and Soil

f. Concrete and Soil

g. Water and Soil

Green SweetGum 42.38 60 40 20 12 Green SweetGum TM Band Yellow SweetGum 40 28.52 22.82 2012 46 Yellow SweetGum 2 TM Band3 Red SweetGum 40 30 E 20 o 10 22.51 9.61 6.92 Red SweetGum 2 TM Band 40 Brown SweetGum 28 18 10,81 - 5.54 Brown SweetGum 0 2 TM Band3 4

Explanation / Answer

The best band for descriminating the following classes in the available bands

We have four TM bands

1. BLUE 2. GREEN 3.RED 4.NIR

We are deciding the best band based on higher the reflectance contrast between any two imaged objets, it should be easier to distinguish them.

a. Green Sweetgum and Red Sweetgum

3. Red TM band is best

Because we can observe most contrast reflectance at TM band 3

b.Yellow Sweetgum and Green Sweetgum

2.Green TM band is best

c. Brown Sweetgum and Red Sweetgum

3. Red TM band is best

d. Brown Sweetgum and Grass

4. NIR is the best TM band

e. Grass and Soil

4. NIR is the best TM band

f. Concrete and Soil

2.Green TM band is best

g. Water and Soil

4. NIR is the best TM band

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