Fig. 5
HySE exhibits excellent colour fidelity. a Schematic of colour samples interrogated in a Macbeth Colour Checker. b Representative slice images of the hypercube in the region of the white dashed line in a at four wavelengths. c–f Normalised reflectance intensity profiles of the four colour samples indicated by c–f in a. Black line indicates ground-truth reflectance signals recorded by a calibrated spectrometer. Blue, green and orange lines are reflectance signals in the hypercube measured by three different gratings (50, 150 and 300 lines/mm), respectively. Images acquired using external illumination. Scale bar = 1 mm
