Wearing detection apparatus, imaging apparatus, restraint device, and wearing detection program

A wearing detection apparatus comprising:

• an imaging device configured to capture an image of a restraint device including a strap, an exposed area of which changes when the strap is being worn and not worn;
• and
• a control unit configured to detect, from the image captured by the imaging device, a recognition image corresponding to a recognition member provided in the exposed area that is exposed when the strap is worn.

A camera unit comprising:

• an imaging device configured to capture an image with light of a specific wavelength outside the visible light spectrum;
• and
• a detection circuit configured to detect, from the image captured by the imaging device, a recognition image corresponding to a member configured to reflect light of a specific wavelength.

A non-transitory computer-readable storage medium having stored thereon a wearing detection program which is executable by a computer, when executed, cause a computer to:

• instruct an imaging device to capture an image of a restraint device including a strap, an exposed area of which changes when the strap is worn and when the strap is not worn;
• and
• detect, from the image captured by the imaging device, a recognition image corresponding to a recognition member provided in the exposed area that is exposed when the strap is worn.