Fig. 2From: Unsupervised hyperspectral image segmentation of films: a hierarchical clustering-based approachPre-processing phases of the hypercubes: a Illustration of the hypercube in region of interest, after cropping and binning. b comparison of spectra extracted from the hypercube, on which indicated the locations of the selected points. c Schematic representation of the grids evaluated: 200 × 200, 100 × 100, and 50 × 50Back to article page