The present invention relates to a protection system for printed documents using steganographic and computer vision, materialized by the use of portable devices, where ETCODE encoded images are generated for this purpose. This method was created in order to ensure the document's authenticity, integrity of information, store information about authorship and copyright protection of printed documents. The protection method described in this patent is to generate an encoded image ETCODE using steganographic techniques, to be printed with the document, using conventional printers, and also that the decoding is performed by a digital camera portable device, obtaining therefore the information hidden in ETCODE, and then confronted with the information about the document in its digital version present in a database, thus fulfilling the proposal document protection.

Example embodiments relate to generating a combined image of a presentation surface. In example embodiments, an image including a portion of a presentation surface is captured using a camera. A location identifier is then received, where the location identifier specifies a location of a digital version of the content displayed on the presentation surface. Next, the digital version of the content displayed on the presentation surface is retrieved from the location specified by the location identifier. Finally, a combined image is generated by combining the captured image and the retrieved digital version of the content displayed on the presentation surface.

A method for providing watermark to subscribers is provided. The method comprises observing a request for a first content from a subscriber, determining if the subscriber can receive a watermark, generating a second content comprising the watermark if the subscriber can receive a watermark, causing the subscriber to fetch the first content, and causing the subscriber to fetch the second content comprising the watermark overlaying the first content.

Methods and systems for aggregating digital content captured at an event. In one aspect, a connection is established from a computing device to a Near Field Communication (NFC) enabled event check-in point located at the event. The NFC enabled event check-in point is encoded with event identification information for the event. The event identification information includes an event Uniform Resource Locator (URL) for a webpage associated with a computing system. The computing device receives event identification information including the event URL from the NFC enabled event check-in point, and transmits digital images captured at the event to a computing system.

A server includes a controller and an interface for communicating with image processing devices and an information processing device. The controller performs: obtaining, from a first image processing device, first identification information about the first image processing device and a first particular code input to the first image processing device; determining whether at least one code in a storage contains the obtained first particular code; transmitting first corresponding information corresponding to the first particular code to the first image processing device when the at least one code contains the obtained first particular code; receiving the first corresponding information provided from the first image processing device to the information processing device and first user account information input to the information processing device; and registering the received first user account information and the first identification information identified by the received first corresponding information, into the storage in association with each other.

A device for capturing rendered text is described. The device incorporates one or more visual sensors that receive visual information as a part of capturing rendered text. The visual sensors are collectively capable of capturing both text that is permanently printed on a page, and text that is displayed transitorily on a dynamic device. The device further incorporates a visual information disposition subsystem for disposing of visual information received by the visual sensors. The device further incorporates a package that bears the visual sensors and the visual information disposition subsystem, and is suitable to be held in a human hand.

A signature device including a storage unit configured to store moving image data, and a processor configured to extract original metadata from moving image data for the image data of each of a plurality of images forming the moving image data, the original metadata including location data of the image data and identification data of the moving image data, to encode the image data of each of the images into still image data in accordance with an image format, to write the still image data into a first area, to write the original metadata extracted by the extractor into a second area, the first area and the second area being included in a storage area of a still image data file in which the still image data is filed, and to generate summary data for the still image data file.

Techniques and systems are described for real time streamable page generation from a digital document. A page generator module generates individually streamable pages from a digital document in which metadata is written at a beginning of the streamable pages that is usable to control rendering of the page. Therefore, upon receipt of the streamable page by a rendering engine of a receiver device (e.g., a printer), the metadata is usable to render the objects included in the streamable page as received. The streamable pages are renderable by a receiver device as individual pages and/or portions of the pages are received.

Embodiments of the disclosed innovations provide systems and methods for locating data associated with rendered documents. Some embodiments support the use of a handheld document data capture device.

Embodiments of the disclosed innovations provide systems and methods for locating data associated with rendered documents. Some embodiments support the use of a handheld document data capture device.