Apparatus and method for estimating blood sugar based on heterogeneous spectrums

A blood sugar profile providing apparatus comprising:

• a memory configured to store a first type spectrum-blood sugar profile relationship model;
• a first type spectrum measurer configured to measure first type spectrum data for a skin of a user;
• a processor configured to calculate a blood sugar profile of the user based on the first type spectrum-blood sugar profile relationship model and the measured first type spectrum data;
• and
• an outputter configured to output the calculated blood sugar profile of the user.

An apparatus comprising:

• a memory configured to store an individualized blood sugar estimation model;
• a second type spectrum measurer configured to measure second type spectrum data for a skin of a user;
• and
• a processor configured to calculate blood sugar of the user based on the measured second type spectrum data and the individualized blood sugar model,
• wherein the blood sugar model is generated based on blood sugar profile data of the user calculated based on a first type spectrum-blood sugar profile relationship model and training second type spectrum data for the skin of the user.