Table 4. Error matrix resulting from accuracy assessment of the supervised classification for the three scenes representing the Kendall Island Bird Sanctuary and Fish Island in the outer Mackenzie Delta, Northwest Territories. Values represent the number of pixels classified as a particular habitat type in relation to their actual habitat type, out of 100 in each scene. Incorrect values reading down represent errors of omission (pixels incorrectly excluded from a habitat class), whereas incorrect values reading across represent errors of commission (pixels incorrectly included in a habitat class). A total of 100 pixels were sampled from each scene, with an estimated overall accuracy of 77%, 74%, and 85% in scenes 1, 2, and 3, respectively.
| |
| |
|
|
Actual Habitat
Type |
|
|
Scene 1 |
Scene 2 |
Scene 3 |
|
Actual Habitat Type: |
1 |
2 |
3 |
4 |
% Error Commission |
1 |
2 |
3 |
4 |
% Error Commission |
1 |
2 |
3 |
4 |
% Error Commission |
| |
|
Classified Habitat Type: |
|
|
(1) Non- shrubby lowland habitat |
20 |
0 |
0 |
0 |
0% |
26 |
0 |
2 |
0 |
7% |
25 |
0 |
2 |
0 |
7% |
|
(2) Saturated habitat |
1 |
14 |
0 |
0 |
7% |
0 |
12 |
0 |
0 |
0% |
0 |
14 |
0 |
0 |
0% |
|
(3) Dense shrub lowland habitat |
0 |
1 |
19 |
1 |
10% |
2 |
0 |
24 |
3 |
17% |
0 |
0 |
21 |
2 |
9% |
|
(4) Dry upland tundra habitat |
0 |
0 |
1 |
24 |
4% |
0 |
0 |
11 |
12 |
48% |
0 |
0 |
3 |
25 |
11% |
|
(5) Not classified |
4 |
5 |
8 |
2 |
N/A |
1 |
6 |
1 |
0 |
N/A |
1 |
6 |
1 |
0 |
N/A |
|
% Error Omission |
20 |
30 |
32 |
11 |
|
10 |
33 |
37 |
20 |
|
4 |
30 |
22 |
7 |
|
|
| |
|