Evaluating a condition of a person

A system for evaluating a condition of a person, comprising:

• an image capturing device configured to:
• acquire a first image of at least a mouth of the person at a first time at which the person performs a first facial expression, and
• acquire a second image of at least the mouth of the person at a second time at which the person performs a second facial expression, the first facial expression and the second facial expression being of a same first type of facial expression,
• wherein the image capturing device, to acquire at least one of the first image and at least one of the second image, is configured to acquire a video of at least the mouth of the person;
• and
• a computing device configured to:
• determine, based at least on the first image acquired, at least one characteristic of the first facial expression;
• determine, based on at least the second image acquired, the at least one characteristic of the second facial expression;
• determine a difference between the at least one characteristic of the first facial expression determined and the at least one characteristic of the second facial expression determined;
• and
• generate an output signal, indicating the condition of the person based at least on the difference determined,
• wherein the computing device is further configured to determine a characterizing frame of the video acquired as at least one of the first image acquired and the second image acquired, and
• wherein one of
• the computing device is further configured to determine the characterizing frame of the video acquired, automatically, based on a criterion, or
• the computing device is further configured to prompt a user or the person to select one of the frames of the video acquired as the characterizing frame.

A computer-implemented method for evaluating a condition of a person, comprising:

• determining at least one characteristic of a first facial expression of at least a mouth of the person, at a first time at which the person performs the first facial expression, based at least on a first image previously captured;
• determining at least one characteristic of a second facial expression of at least a mouth of a person, at a second time at which the person performs the second facial expression, based at least on a second image previously captured, the first facial expression and the second facial expression being of a same first type of facial expression;
• determining at least one difference between the at least one characteristic of the first facial expression determined and the at least one characteristic of the second facial expression determined;
• and
• generating an output signal indicating the condition of the person based at least on the at least one difference determined,
• wherein at least one of previously capturing of the first image and previously capturing of the second image includes previously capturing a video of at least the mouth of the person and determining a characterizing frame of the video acquired as at least one of the first image acquired and the second image acquired, and
• wherein one of
• the characterizing frame of the video acquired is automatically determined based on a criterion, or
• a user or the person is prompted to select one of the frames of the video acquired as the characterizing frame.

A non-transitory computer-readable data storage medium storing executable program code configured to, when executed by at least one processor, perform at least:

• determining at least one characteristic of a first facial expression of at least a mouth of a person, at a first time at which the person performs the first facial expression, based at least on a first image previously captured;
• determining at least one characteristic of a second facial expression of at least a mouth of a person, at a second time at which the person performs the second facial expression, based at least on a second image previously captured, the first facial expression and the second facial expression being of a same first type of facial expression;
• determining at least one difference between the at least one characteristic of the first facial expression determined and the at least one characteristic of the second facial expression determined;
• and
• generating an output signal indicating a condition of the person based at least on the at least one difference determined,
• wherein at least one of previously capturing of the first image and previously capturing of the second image includes previously capturing a video of at least the mouth of the person and determining a characterizing frame of the video acquired as at least one of the first image acquired and the second image acquired, and
• wherein one of
• the characterizing frame of the video acquired is automatically determined based on a criterion, or
• a user or the person is prompted to select one of the frames of the video acquired as the characterizing frame.