Determination of levelness-unlevelness index using scanner data

In this study,two new criteria are suggested to assess the unlevelness of fabrics with different degrees and patterns of unevennesses by analyzing of data obtained by imagining of fabrics with scanner. the basic statistical properties of matrices of grabbed images,i.e. the singular values extracted by singular value decomposition technique and the two dimensional standard deviations are introduced as the unlevelness indices. the results are compared with those reported by visual assessment of observers as well as numerical outcomes of quantitative method employing the spectral k/s values calculated from reflectance spectra of samples by spectrophotometer.