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. 2023 Apr 12;13(3):455–463. doi: 10.1007/s13534-023-00275-x

Fig. 1.

Fig. 1

a Schematic diagram of the dual-wavelength simultaneous acquisition imaging system setup for oxygen saturation measurement. b The light source was arranged at a 45-degree angle and a camera including a lens was placed in the middle in the actual experimental setup. c Graphic user interface for image output