Figure 4
From: A Statistical Approach of Background Removal and Spectrum Identification for SERS Data
Spectra and signals of riboflavin from replicate 3 (blue) and replicate 4 (red). (a) Two spectra are scaled by their average intensities to be comparable in the same intensity scale. The fragments of signals in the frequency region 500~1,000 before (b) and after (c) the optimal frequency shift. The correlation coefficient of the two lines increases from 0.025 to 0.719 after the shift.
