A time-frequency concentration criterion using grayscale erosion

Abstract

A new criterion is proposed in this paper which employs the grayscale erosion to measure the concentration of different time-frequency representations/distributions. In contrast to some widely used Concentration Measures proposed by L. Stankovic and L. Jones, this method combines the both width and peakedness information of the auto-term area. Moreover, it can be used in the multi-component signal analysis when the minimum mean square error criterion is invalid.