The reading of printed marks back into text a machine can handle. It recovers language from an image of language.
An initialism from mid-20th-century computing for turning an image of printed text back into machine text; optical from Greek optikos (of sight), character from Greek kharakter (an engraved mark), recognition from Latin recognoscere (to know again).
The house's way of recovering text trapped inside an image — a scanned page or photograph read back into words a machine, and a person, can search and use.