1. A sentence hiding and displaying system comprising: an image creating interface receiving an input of information on an original image, a plurality of sentences corresponding to the original image, and information on at least one language to be hidden; an image creator configured to determine at least one sentence to be hidden expressed in the language to be hidden from the plurality of sentences, and to create a hidden image of the original image, wherein the at least one sentence is hidden in the hidden image; a sentence display interface configured to receive an input of information on a language selected by a user; and a sentence extractor and displayer configured to extract at least one sentence expressed in the selected language from the at least one sentences hidden in the hidden image, and to display the at least one sentence expressed in the selected language on the original image.
1. A sentence hiding and displaying system comprising: an image creating interface receiving an input of information on an original image, a plurality of sentences corresponding to the original image, and information on at least one language to be hidden; an image creator configured to determine at least one sentence to be hidden expressed in the language to be hidden from the plurality of sentences, and to create a hidden image of the original image, wherein the at least one sentence is hidden in the hidden image; a sentence display interface configured to receive an input of information on a language selected by a user; and a sentence extractor and displayer configured to extract at least one sentence expressed in the selected language from the at least one sentences hidden in the hidden image, and to display the at least one sentence expressed in the selected language on the original image. 3. The system according to claim 1 , wherein the image creator comprises: an image receiver configured to receive the original image; a sentence determiner configured to receive the plurality of sentences and the information on the at least one language to be hidden, and to determine the at least one sentence to be hidden; a hidden information packager configured to create hidden information comprising the at least one sentence to be hidden; and a sentence hider configured to hide the hidden information in the original image in order to create the hidden image.