4. One or more server devices comprising: one or more processors operable to cause a server device to: receive, from a client device in communication with the server device via a network, an image including text; perform optical character recognition on the image to produce recognized text; determine one or more topics corresponding to the recognized text; select a word or a phrase from the recognized text for providing additional information; determine one or more potential meanings of the selected word or phrase; select a meaning of the one or more potential meanings using the one or more topics; select a source of additional information corresponding to the selected meaning; provide an indication to the client device that additional information is available for the selected word or phrase; receive a request from the client device for the additional information corresponding to the selected word or phrase; and send the additional information to the client device.
4. One or more server devices comprising: one or more processors operable to cause a server device to: receive, from a client device in communication with the server device via a network, an image including text; perform optical character recognition on the image to produce recognized text; determine one or more topics corresponding to the recognized text; select a word or a phrase from the recognized text for providing additional information; determine one or more potential meanings of the selected word or phrase; select a meaning of the one or more potential meanings using the one or more topics; select a source of additional information corresponding to the selected meaning; provide an indication to the client device that additional information is available for the selected word or phrase; receive a request from the client device for the additional information corresponding to the selected word or phrase; and send the additional information to the client device. 9. The one or more server devices of claim 4 , wherein the word or phrase from the recognized text for providing additional information is selected using at least one of: the one or more topics, the characteristic, or textual formatting of the word or phrase.