1. An image processing system comprising an imaging device for capturing an image and an image processing apparatus for processing the image, the imaging device including: imaging means for capturing the image; first recording means for recording information relating to the image as data having a predetermined data structure, the information being associated with the image; and first transmission control means for controlling transmission of the image to the image processing apparatus; and the image processing apparatus including: reception control means for controlling reception of the image transmitted from the imaging device; feature extracting means for extracting a feature of the received image; second recording means for recording the feature, extracted from the image, as data having the same structure as the data structure in the imaging device, the feature being associated with the image; and second transmission control means for controlling transmission of the feature to the imaging device.