A computer in the form of a client comprises a graphical user interface and a memory, the memory including a first data object for storing the feature data in a first format, and a second data object for storing the image data in a second format. The client computer is configured to send at least one query; receive at least one of the feature data and the image data in response to the at least one query; and display the feature data in the first format and the image data in the second format in the graphical user interface.