1. A computer-implemented method to evaluate image aesthetics, based objective-to-subjective attribute mappings, the computer-implemented method comprising: determining objective attribute values for each of one or more aesthetic attributes for each image in a first set of images, via one or more processors and based on at least one pre-processing element determined for the respective image; determining, for the respective aesthetic attribute, a mapping from the objective attribute values to respective, computationally estimated subjective attribute values, based on the objective attribute values and corresponding, experimentally determined subjective attribute values; and applying, to a next image not in the first set of images, the mapping for at least a first of the one or more aesthetic attributes, in order to computationally estimate a subjective attribute value for the next image, based on an objective attribute value for the next image.