Non-contact identification of sleep and wake periods for elderly care

A non-transitory computer readable medium containing software that determines sleep patterns of a user, the software comprising:

• executable code that detects a plurality of point clouds, each corresponding to a different position of the user at different times;
• executable code that forms a plurality of bounding boxes, each corresponding to coordinates of captured points of one of the point clouds;
• executable code that creates a wake/sleep classifier based on features of the point clouds;
• executable code that determines sleep positions of the user as a function of time based on the bounding boxes;
• and
• executable code that determines sleep patterns of the user based on the sleep positions of the user and on results of the sleep/wake classifier, wherein the features of the point clouds include intermediate data that is determined using at least one of:
• scalar velocities of points in the point clouds, absolute velocities of points in the point clouds, and counts of points in the point clouds.

A non-transitory computer readable medium containing software that determines sleep patterns of a user, the software comprising:

• executable code that detects a plurality of point clouds, each corresponding to a different position of the user at different times;
• executable code that forms a plurality of bounding boxes, each corresponding to coordinates of captured points of one of the point clouds;
• executable code that creates a wake/sleep classifier based on features of the point clouds;
• executable code that determines sleep positions of the user as a function of time based on the bounding boxes;
• and
• executable code that determines sleep patterns of the user based on the sleep positions of the user and on results of the sleep/wake classifier, wherein determining sleep positions includes determining if a breathing direction of the user is vertical or horizontal.