Figure 4.

Predicted concentrations for 64 random spots from 30 regions (30 hyperspectral images) of the three constituents in Riamet^®: lumefantrine (green line, lower graph), artemether (red line, middle part), and hypromellose (blue line, upper graph). The respective prediction error ranges are shown. Local differences in the distribution of the concentrations of active ingredients in the tablet are revealed. Each region of interest (ROI) indicates the imaged area from a single fiber in the fiber array.