A computer implemented method for generating at least one security label (110) using at least one printing device (112) is proposed. The method comprises the following steps: i) (114) generating a first digital image (116) comprising a plurality of colored pixels by printing a printer job with a printer control setting and scanning the printout using the printing device (112) thereby generating a digital fingerprint: ii) (118) providing a binary code (120) of identifier information: iii) (122) mapping the identifier information with the digital fingerprint by determining a binary code of the digital fingerprint and adding the binary code (120) of the identifier information to the color code of the first digital image (116); iv) (124) generating a second digital image (126) having a plurality of colored pixels different from the first digital image (116) by transferring the added binary codes into a color code of the second digital image (126): v) (128) printing the second digital image (126) on a substrate (129) thereby generating the security label (110).

Example implementations relate to multiple payload pantograph. Some examples may include a first pattern generation engine to generate a first pattern. The first pattern may be a data-bearing pattern encoding a first payload. Additionally, some examples may include a second pattern generation engine to generate a second pattern, the second pattern (by itself or in combination with the first pattern) may represent a second payload. The second payload may be camouflaged by a combination of the first pattern and the second pattern. Some examples may also include a pantograph generation engine to generate a multiple payload pantograph including the first pattern and the second pattern. The multiple payload pantograph may include the first pattern in one of the pantograph background or the pantograph foreground.

An information processing system includes a server, and a terminal device communicable with the server via a network. The terminal device includes a display, an image capturing device to capture a marker image and a first image formed on a recording medium, the marker image indicating a condition of displaying information on the display, and circuitry to extract an identifier of the marker image from the captured marker image, transmit identification information of the terminal device or user and the extracted identifier of the captured marker image to the server, receive data of a second image associated with the identification information of the terminal device or user and the identifier of the marker image from the server, and superimpose the second image over the first image to cause the display to display the second image and the first image while the recording medium is being captured.

A watermark image may be generated that includes a first set of encoded pixels each of which is assigned a first transparency value and a second set of encoded pixels each of which is assigned a second transparency value, the second transparency level being different from the first transparency level. The encoded pixels may be distributed among a set of blank pixels such that each encoded pixel neighbors one or more blank pixels in the watermark image, and in particular at least two blank pixels in the watermark image. Herein, each blank pixel may be assigned the second transparency value. The watermark image may be overlaid and blended over a background source image to create an encoded source image. A decoder system may recover encoded information from the encoded source image.

A device comprising: an input for receiving images captured by a camera, of an environment illuminated by light from a light source; an image processing module; and a verification module. The image processing module is configured to process one or more of the images to decode a timestamp modulated into the light, and to output an indication of the decoded timestamp. The verification module is arranged to receive the indication of the decoded timestamp output by the image processing module, and based thereon to perform an at least partially automated verification of a time at which the one or more images were captured.

The present disclosure relates to digital watermarking. One claim recites a method to detect two or more different digital watermarks in media. The method includes: receiving captured imagery of the media, the captured imagery comprising a plurality of image frames; for a first image frame applying a first watermark detector to search for a first digital watermark hidden within the first image frame, in which an electronic processor is programmed as the first watermark detector; and for a second image frame applying a second, different watermark detector to search for a second, different watermark hidden within the second image frame, in which an electronic processor is programmed as the second watermark detector. Other claims and combinations are provided too.

In one embodiment, a watermark is embedded in a sequence of video frames, for each one of the video frames, a set of N rectangular patches, two palettes of pixel values in a selected color space, such that the two palettes are denoted as P0 and P1, and P0P1, and in each one of the N patches a processor which chooses one of P0 and P1 according to a value of a payload bit to be encoded, a calculator which calculates one of a variance of pixel values in the frame, and edginess for the pixel values in the frame, thereby determining a calculated value, and a processor which determines if the calculated value is beneath a given threshold value, if the calculated value is beneath the given threshold value the processor is operative to calculate a function of the pixel values, the closest value to a result of the calculation of the function in the chosen palette is chosen, and a replacer which replaces the pixel values within the patch with the chosen closest value. Related systems, apparatus and methods are also described.

A memory stores video information obtained by photographing an object that reflects light in which embedded information is superimposed onto a plurality of components in a color space. A processor emphasizes a signal obtained from an image included in the video information on the basis of a result of emphasizing a first color component more than a second color component according to a spectral reflection characteristic in a range including the object, and detects the embedded information from the emphasized signal, the first color component and the second color component being from among a plurality of color components that correspond to a plurality of wavelengths, the first color component having a reflectance higher than a reflectance of the second color component. A display device outputs information on the basis of the embedded information detected by the processor.

A method, non-transitory computer readable medium and apparatus for generating a multi-layer correlation mark via a monochrome printer are disclosed. For example, the method includes setting a first scalar value of a channel of the monochrome printer, setting a second scalar value of the channel of the monochrome printer, generating a first layer of the multi-layer correlation mark at the first scalar value of the channel, generating a second layer of the multi-layer correlation mark at the second scalar value of the channel and printing the multi-layer correlation mark comprising the first layer at the first scalar value of the channel and the second layer at the second scalar value of the channel.

In one example, a system including an isolation engine, a normalization engine, and a channel engine is described. In the example, the isolation engine generates mark data using a mark technique based on a first input color channel and a second input color channel, the normalization engine scales intensity values of a set of pixels of the mark data to a greater range, and the channel engine generates output channel data for a plurality of output color channels from normalized mark data based on the scaled intensity values.