A method, apparatus and computer program product generate and utilize a digital signature to identify an object of interest. The method includes providing a reference image depicting the object to a signature encoding module having a hypernetwork. An indication of the object within the reference image is also provided. The method includes generating, with the signature encoding module, the digital signature representing the object. The digital signature includes parameter(s) configured to define processing to be performed by another neural network. The method includes providing the digital signature and at least one query image to a query processing module having a neural network. The method includes identifying, by the query processing module, the object within the at least one query image based upon the digital signature by processing the at least one query image with the neural network of the query processing module in a manner defined by the parameter(s).