Table 6 Scores of FEDS fire perimeter by comparing with FRAP or NIFC data using all fires occurring in California during 2018.

From: California wildfire spread derived using VIIRS satellite observations and an object-based tracking system

METRICS

DEFINITION

FRAP

NIFC

REGIONAL

PER FIRE

REGIONAL

PER FIRE

Ratio

FEDS_B/REF_B

1.091

1.145 ± 0.403

1.198

1.298 ± 0.409

Accuracy

(TP+TN)/AREA_TOTAL

0.996

—

—

—

Precision

TP/FEDS_B

0.847

0.827 ± 0.145

0.788

0.744 ± 0.157

Recall

TP/REF_B

0.925

0.923 ± 0.252

0.944

0.943 ± 0.166

Intersection Over Union (IOU)

TP/(TP + FP + FN)

0.794

0.706 ± 0.212

0.753

0.725 ± 0.149

F1 score

2 * (Precision * Recall)/(Precision + Recall)

0.884

0.847 ± 0.192

0.859

0.850 ± 0.079

  1. For comparison to FRAP data, only the year-end fire perimeters are used. The REGIONAL columns represent the agreement in the whole region of California. The PER FIRE columns represent the mean values and 1-σ uncertainty for comparisons with each individual large fire in the FRAP or NIFC dataset. In the NIFC column, we list the scores by comparing all valid fire perimeters of large fires shown in Fig. 9a with the afternoon (‘PM’) fire perimeters from FEDS for each day. Accuracy is only reported for comparisons with FRAP in the whole region of California (FRAP REGIONAL column). Area values in the DEFINITION column are calculated from the confusion matrix as defined in Table 5. REF_B represents area burned from FRAP or NIFC.
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