1. A computer-implemented method comprising: determining a first counterfeit identification performance attribute (CIPA) sensitivity to changes in resolution of an image for a first feature of the image; determine a second CIPA sensitivity to changes in resolution of an image for a second feature of the image; select the first feature based on a comparison of the first CIPA to the second CIPA; and determining whether the image on a sample is a counterfeit based on the selected first feature.