EURASIP Journal on Advances in Signal Processing

Table 2 2-D shape analysis: Area, orientation, and eccentricity descriptors of test pieces.

From: Geometrical Feature Extraction from Ultrasonic Time Frequency Responses: An Application to Nondestructive Testing of Materials

	Test Piece	Area	Orientation	Eccentricity
0.5 mm	1 and 2	651	−0.0953	0.8762
0.7 mm	3 and 4	383	−0.0344	0.8329
1.3 mm	5 and 6	258	−0.3297	0.6965
1.8 mm	7 and 8	279	−0.1041	0.6423

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