Vehicle Type Recognition in Sensor Networks Using Improved Time Encoded Signal Processing Algorithm

Table 3

Comparison of the recognition results using three feature extraction methods based on KNN classifier.

KNN classifier	Feature extraction methods
	TESP algorithm	ITESP algorithm
	29-character based 𝑆-matrix	40-character based 𝑆-matrix	40-character based 𝐴-matrix
Wheeled vehicles	48%	76%	88%
Tracked vehicles	54%	84%	82%
Average recognition rate	52%	80%	85%
Average computational time	0.63 s	0.81 s	2.55 s