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This paper proposes a new strategy for surface roughness analysis and characterisation based on the wavelet transform. After a short review of wavelet-based methods used in the field of surface roughness analysis, results obtained using a new tool of analysis called the frequency normalised wavelet transform (FNWT) are presented.doi:10.1016/s0043-1648(02)00006-6 fatcat:w5isovljfvdrvp3qqju4ipzb5y