Automatic white-balance (AWB) for a camera system

A device comprising:

• a processor;
• and
• a non-transitory computer-readable media comprising instructions which, when executed by the processor, cause the processor to carry out operations comprising:
• detecting a first human face within a precursor image;
• determining a first tone of the first detected human face within the precursor image;
• retrieving first tonal data associated with the detected first human face, the first tonal data determined from a group of previous images captured in previous ambient conditions, the previous images determined to contain a same human face as the first detected human face;
• determining, based on the first tonal data, a first difference in white-balance (WB) between the first tone of the first detected human face within the precursor image and the first tonal data;
• and
• adjusting camera settings based on the first difference in WB, the adjusting enabling capture of an image having an improved tone, the improved tone more-closely matching the first tonal data than the first tone.

A non-transitory computer-readable storage medium comprising instructions which, when executed by one or more processors, cause the one or more processors to carry out functions comprising:

• detecting a first human face within a precursor image;
• determining a first tone of the first detected human face within the precursor image;
• retrieving first tonal data associated with the detected first human face, the first tonal data determined from a group of previous images captured in previous ambient conditions, the previous images determined to contain a same human face as the first detected human face;
• determining, based on the first tonal data, a first difference in white-balance (WB) between the first tone of the first detected human face within the precursor image and the first tonal data;
• and
• adjusting camera settings based on the first difference in WB, the adjusting enabling capture of an image having an improved tone, the improved tone more-closely matching the first tonal data than the first tone.