Measurements using camera imaging tissue comprising skin or the hand

A method of determining a measurement of a physiological parameter for a user, the method comprising:

• providing a physiological measurement device with a housing configured to be physically applied to the user;
• causing a light source to emit light towards a tissue of the user, the emitted light including (i) light within a first band of wavelengths that is associated with a first color, (ii) light within a second band of wavelengths that is associated with a second color, and (iii) light within a third band of wavelengths that is associated with a third color, the light source being physically incorporated into the housing;
• receiving, by a first detector of a plurality of detectors, light reflected from the tissue of the user that was emitted from the light source;
• receiving, by a second detector of the plurality of detectors, light reflected from the tissue of the user that was emitted from the light source, the plurality of detectors being physically incorporated into the housing;
• with the housing physically applied to the user such that the light source, the first detector, and the second detector are adjacent to the tissue of the user, generating a first reflected light signal associated with the light reflected from the tissue of the user that was (i) emitted from the light source within the first band of wavelengths that is associated with the first color and (ii) received by the first detector;
• with the housing physically applied to the user such that the light source, the first detector, and the second detector are adjacent to the tissue of the user, generating a second reflected light signal associated with the light reflected from the tissue of the user that was (i) emitted from the light source within the second band of wavelengths that is associated with the second color and (ii) received by the first detector;
• with the housing physically applied to the user such that the light source, the first detector, and the second detector are adjacent to the tissue of the user, generating a third reflected light signal associated with the light reflected from the tissue of the user that was (i) emitted from the light source within the third band of wavelengths that is associated with the third color and (ii) received by the first detector;
• with the housing physically applied to the user such that the light source, the first detector, and the second detector are adjacent to the tissue of the user, generating a fourth reflected light signal associated with the light reflected from the tissue of the user that was emitted from the light source and received by the second detector;
• with (i) the housing physically applied to the user such that the light source, the first detector, and the second detector are adjacent to the tissue of the user and (ii) the light source not emitting light, generating an ambient light signal associated with ambient light received by a least one of the plurality of detectors;
• performing an analysis of the first reflected light signal, the fourth reflected light signal, and the ambient light signal, wherein the performing the analysis further includes performing an analysis of one or both of (i) the second reflected light signal and (ii) the third reflected light signal;
• based at least in part on the analysis, generating a processed output signal having a signal-to-noise ratio that is greater than a signal-to-noise ratio of the first reflected light signal, the processed output signal being associated with the physiological parameter of the user;
• and
• using the processed output signal, determining a measurement of the physiological parameter of the user.