Photoshopping images?
“Photoshopping or photo-shopping” is slang for the digital editing of photos. The term is derived from Adobe Photoshop, the image editor most commonly used by professionals. Some other programs such as GIMP, Corel photopaint, or Paint shop may also be used.
The term photoshopping in popular culture is usually associated with montages in the form of “visual jokes.” Depending on how blurred the image is what you could do is using Photoshop or The Gimp blur the alphabet and numbers from other license plates to a level that is similar to what your image has and then compare them.