Endoscope system

An endoscope system comprising:

• a processor configured to function as:
• an image acquiring unit that acquires a plurality of spectral images obtained by imaging of an observation target;
• an oxygen-saturation-level calculating unit that calculates an oxygen saturation level of the observation target on the basis of the plurality of spectral images;
• an image creating unit that creates an oxygen-saturation-level image that is an image representing the oxygen saturation level;
• a numerical-value display-position determining unit that determines a numerical-value display position for displaying a numerical value of the oxygen saturation level on the oxygen-saturation-level image displayed on a display, on the basis of either the spectral images or the oxygen saturation level, or both the spectral images and the oxygen saturation level;
• and
• a display control unit that performs control to display the numerical value of the oxygen saturation level on the basis of the numerical-value display position.