WAVELET TEXTURAL FEATURES FROM ULTRASONIC ELASTOGRAMS FOR MEAT QUALITY

Abstract

Ultrasonic elastography was used for quantitative imaging of strain and elastic modulus distribution in meatsamples. This article proposes the application of wavelet analysis for textural feature extraction from these images. In thisarticle, the wavelet analysis is briefly introduced, the application of elastography for imaging meat muscles is reviewed,and a procedure of generating a wavelet transform of meat elastogram for the extraction of textural features is suggested.Wavelet analysis is then applied on beef samples for elastogram feature extraction compared to prior work based onHaralicks method. For beef tenderness prediction wavelet features produced significantly higher R2 values (0.7-0.9) inlinear statistical models than Haralicks features (0.1-0.8).