Image processing apparatus

An image processing method comprising:

• by a processor storing, in a storage apparatus, at least one image of an object as a registered object image in association with an object identification number that uniquely identifies the object, the at least one image being an image of any posture among of a predetermined plurality of postures of the object;
• by the processor, acquiring an unknown object image that is an image of an unknown object;
• by the processor, detecting a posture of the unknown object from the unknown object image;
• by the processor, in a case where the storage apparatus includes a registered object image associated with a posture matching that of the unknown object, performing a first re-identification to determine whether the registered object image associated with the posture matching that of the unknown object and the unknown object image are images of the same object;
• by the processor, in a case where the first re-identification fails and the storage apparatus includes a registered object image associated with a posture that does not match that of the posture of the unknown object performing a second re-identification to determine whether the registered object image associated with the posture that does not match that of the unknown object and the unknown object image are images of the same object;
• by the processor, in a case where the second re-identification fails, assigning a new object identification number to the unknown object and storing the unknown object image in the storage apparatus as a new registered object image associated with the assigned object identification number and the posture of the unknown object;
• and
• in a case where the first re-identification or the second re-identification is unsuccessful,
• in a case where a registered object image being associated with the same posture as the unknown object is identified among the at least one registered object image stored in the storage apparatus using the object identification number, overwriting the same-posture registered object image with the unknown object image, and
• in a case where the registered object image being associated with the same posture as the unknown object among the at least one registered object image stored in the storage apparatus is not identified using the object identification number, adding the unknown object image to the storage apparatus as a new registered object image associated with the object identification number and the posture of the unknown object.

A non-transitory computer-readable medium storing thereon a program comprising instructions for causing a computer to execute processing to:

• store in a storage apparatus, at least one image of an object as a registered object image in association with an object identification number that uniquely identifies the object, the at least one image being an image of any posture among of a predetermined plurality of postures of the object;
• acquire an unknown object image that is an image of an unknown object;
• detect a posture of the unknown object from the unknown object image;
• in a case where the storage apparatus includes a registered object image associated with a posture matching that of the unknown object, perform a first re-identification to determines whether the registered object image associated with the posture matching that of the unknown object and the unknown object image are images of the same object;
• in a case where the first re-identification fails and the storage apparatus includes a registered object image associated with a posture that does not match that of the unknown object perform a second re-identification to determine whether the registered object image associated with a posture that does not match that of the unknown object and the unknown object image are images of the same object;
• in a case where the second re-identification fails, assign a new object identification number to the unknown object and store the unknown object image in the storage apparatus as a new registered object image associated with the assigned object identification number and the posture of the unknown object;
• and
• in a case where the result of either the first re-identification or the second re-identification is a success:
• in a case where a registered object image being associated with the same posture as the unknown object is identified among the at least one registered object image stored in the storage apparatus using the object identification number, overwrite the same-posture registered object image with the unknown object image, and
• in a case where the registered object image being associated with the same posture as the unknown object among the at least one registered object image stored in the storage apparatus is not identified using the object identification number, add the unknown object image to the storage apparatus as a new registered object image associated with the object identification number and the posture of the unknown object.