DefinePK

Abstract

A method of feature extraction based on principal component analysis (PCA) to identify drugs packed in anthropomorphic phantom was proposed. An energy dispersive X-ray diffraction spectrometer was used to acquire the spectra of drugs and the other materials. Features of spectra were extracted by PCA which excels in analyzing high-dimensional data. Furthermore, the number of principal components selected as features was discussed. Combined with artificial neural network, a success rate of recognition between 93.3% and 100% was achieved. It indicates that this method is promising in detecting drug body packing.