Image analysis for determining characteristics of humans

A computerized system for predicting one or more characteristics of a human based on one or more digital images representing the human, comprising:

• at least one memory storing computer-executable instructions and the one or more digital images representing the human;
• a processor in communication with the at least one memory, executing the stored instructions, causing the processor to:
• receive the one or more digital images representing the human, wherein a portion of at least one of the digital images representing the human's head is annotated with a plurality of reference points;
• associate at least one other data value about the human with the one or more digital images representing the human;
• compute a plurality of scale-free metrics comprising at least two of the following:
• a length metric, an area metric, and curvature measures using relative locations of a predetermined subset of the reference points and descriptive points, wherein the descriptive points are based on the relative locations of the reference points;
• compute a combined metric based on a predetermined function of the plurality of scale-free metrics;
• select, using dimension reduction techniques, a combination of the plurality of scale-free metrics useable for predicting a characteristic of the human based on the combined metric and data about a group of humans;
• and
• provide the predicted characteristic to an output device.

A non-transitory, computer-readable medium comprising a set of instructions that, when executed by a computing device, causes the computing device to:

• receive one or more digital images representing a human, wherein a portion of at least one of the digital images representing the human's head is annotated with a plurality of reference points;
• associate at least one other data value about the human with the one or more digital images representing the human;
• compute a plurality of scale-free metrics comprising at least two of the following:
• a length metric, an area metric, and curvature measures using relative locations of a predetermined subset of the reference points and descriptive points, wherein the descriptive points are based on the relative locations of the reference points;
• compute a combined metric based on a predetermined function of the plurality of scale-free metrics;
• select, using dimension reduction techniques, a combination of the plurality of scale-free metrics useable for predicting a characteristic of the human based on the combined metric and data about a group of humans;
• and
• provide the predicted characteristic to an output device.