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Table 1 Training results of six basic classifiers on penalty factor c and kernel function parameter σ2

From: Unpaved road detection based on spatial fuzzy clustering algorithm

Adopted normalized feature c σ2 Training time (s) Number of positive samples Accuracy (%)
Gray feature (non-classification) 4 256 587 1027 82.9
Location feature (non-classification) 8 8 309 518 41.4
Shape feature (non-classification) 8 512 291 538 43.0
Gray feature (classification) 8 1 291 1314 100.0
Location feature (classification) 8 1 271 1314 100.0
Shape feature (classification) 4 1 339 1144 87.1