Method and system for estimating physiological information via set of LEDs and photodetectors by determining a correction profile based on a ratio

A medical device configured to be attached to a human body surface, the medical device comprising:

• a plurality of light emitting diodes (LEDs) disposed on a surface of the medical device and facing the human body surface, wherein the plurality of LEDs are configured such that:
• a first LED and a second LED of the plurality of LEDs are configured to emit a first wavelength;
• and
• a third LED and a fourth LED of the plurality of LEDs are configured to emit a second wavelength;
• a plurality of photodiodes disposed on the surface of the medical device and facing the human body surface, wherein each of the plurality of photodiodes is configured to receive optical data related to the human body surface;
• a communication interface;
• a memory;
• and
• at least one processor coupled to the memory and configured to execute at least one computer-readable program stored in the memory, wherein the at least one computer-readable program includes instructions that, when executed by the at least one processor, cause the medical device to:
• store a first optical data set corresponding to measurements of reflected light from a first substance with known reflectance information;
• cause the plurality of LEDs to emit a plurality of wavelengths of light towards the human body surface;
• receive, via the plurality of photodiodes and while the plurality of LEDs emit the plurality of wavelengths, a second optical data set corresponding to measurements of reflected light from tissue of the human body surface;
• determine, based on a ratio of each portion of the second optical data set corresponding to a particular LED of the plurality of LEDs and a corresponding portion of the first optical data set corresponding to the particular LED, first correction data;
• determine, based on the first correction data and profile data indicating an intensity of each LED of the plurality of LEDs, second correction data;
• estimate, based on the first correction data and the second correction data, physiological information associated with a composition of the tissue of the human body surface;
• and
• transmit, to a second computing device and via the communication interface, data indicating the composition of the tissue of the human body surface.