Provided is a method of embedding and extracting watermark data that is robust against geometric distortion and low-quality photographing and for which the probability of successfully extracting watermark data for an original image is high, while the probability of successfully extracting the watermark data in the case of unauthorized copying is seriously impaired. The data embedding method according to an embodiment of the present invention comprises a step of converting the noise-based image using watermark data, and a step of adjusting the original image using the converted noise-based image.

Provided is a method of embedding and extracting watermark data that is robust against geometric distortion and low-quality photographing and for which the probability of successfully extracting watermark data for an original image is high, while the probability of successfully extracting the watermark data in the case of unauthorized copying is seriously impaired. The data embedding method according to an embodiment of the present invention comprises a step of converting the noise-based image using watermark data, and a step of adjusting the original image using the converted noise-based image.

The present invention discloses methods and systems for tagged-signal verification. Methods include: upon obtaining original content, generating identity and semantic signatures; superposing the identity signature on the content as an in-band digital watermark; utilizing the semantic signature by: superposing on the content or storing; transmitting a tagged signal combining watermark and content; upon receiving the tagged signal with a verification request, extracting transmitted content; extracting the watermark to retrieve a transmitted identity signature; determining the transmitted identity signature is valid by comparing to the original; obtaining the original semantic signature either by: extracting from the watermark, or retrieving a stored version; generating a transmitted semantic signature; verifying the transmitted semantic signature is identical to the original; determining the transmitted content is tamper-free and identical to the original, or has been manipulated; and transmitting a confirmation notification vouching for the authenticity as a genuine version, or designating as a tampered version.

A computerized method for authenticating documents having VIZ sections, the method comprising capturing an image of a document to be authenticated from a scanner and enhancing the captured image, and using a processor for identifying and cropping a VIZ section in the image.

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.

A computer implemented method and a system configured to receive digital content; draw the digital content onto a drawing board; draw a watermark on the drawing board over the digital content, the watermark comprising a series of non-linear lines with the lines having random spacing therebetween in the x and y axes, and save the content of the drawing board in a desired file format.

A multimedia content provisioning device, system and method. The device includes a network interface to communicatively couple to a communications network, to connect to one or more multimedia devices coupled to the communications network, to exchange media processing capabilities between the one or more multimedia devices after establishing a connection therebetween, to generate a list of broadcast media sources and provide the list to each of the one or more multimedia devices in which media processing capabilities are exchanged, to provide a list of broadcast media content receivable from a broadcast media source selected from the generated list at the one or more media devices, and to stream a broadcast media content to the one or more media devices at which a selection from the list of broadcast media content is made, the content being streamed according to the media processing capabilities received therefrom, and to display a multimedia content control user interface at the one or more media devices in which broadcast media content is being streamed.

A reading device includes a light source, an imaging element, a controller, a correcting unit, and a notifying unit. The light source is configured to irradiate an object with light. The imaging element is configured to receive and read the light from the object. The controller is configured to control a second reading operation of reading the object with an invisible image. The correcting unit is configured to perform correction with respect to the invisible image. The notifying unit is configured to notify an outside of at least the invisible image corrected.

A system may include an imaging system coupled to a host subsystem. The imaging system may include an image sensor that provides image frames to the host subsystem. The image sensor may include a data authentication subsystem that appends corresponding authentication data to each of the image frames. Each set of authentication data may be generated based on a subset of the image frame data (e.g., corresponding to image data generated by pixels defined by a sparse region-of-interest within the pixel array). The host subsystem may securely provide region-of-interest parameters to the image sensor to update the sparse region-of-interest in an adaptive manner to account for factors such as computational load of the host subsystem and authentication coverage for the entire pixel array.

According to an embodiment, a digital imaging apparatus includes: a camera module and a controller. The controller detects, on a basis of data of a captured image captured by the camera module, whether or not there is a distance difference between an object and a background included in the captured image. The controller adds, where it has been detected that there is the distance difference, authentication information to the data of the captured image, and stores, in a memory, the captured image to which the authentication information has been added.