A computer-implemented method of identifying a payment card design includes partitioning an image of a detected payment card into a plurality of blocks, the image comprising predetermined portions irreversibly masked; and generating an individual numerical representation of each respective one of the plurality of blocks, thereby generating a collective numerical representation of the design of the detected payment card. The method also includes selecting, from a database storing a plurality of payment card designs, one or more payment card designs based on the collective numerical representation of the design of the detected payment card. The method further includes generating a similarity score between the design of the detected payment card and each of the one or more selected payment card designs; and associating the design of the detected payment card with one of the one or more selected payment card designs based on the similarity score.