The saving device for image sharing includes an image acquiring unit
configured to acquire the images offered by a sharer of the images, a
sharee information storing unit configured to store sharee information
with respect to at least one sharee, a subject assessing unit configured
to assess whether or not a person subject is included in the acquired
images, an image associating unit configured to associate the images
assessed as not including a person subject with the images assessed as
including a person subject, based on the sharee information, and a shared
image determining unit configured to determine the images to be shared
with the sharee or sharees from among the associated images and the
images assessed as including a person subject, based on the sharee
information. The image sharing system and an image sharing method use
such a device.