摘要:
An image forming apparatus includes an encryption processing unit, a storage unit, a decryption processing unit, a decryption processing unit, and an image output unit. The encryption processing unit encrypts non-compressed image data that is not compressed and indicates a raw image as a target of the forming to generate encrypted image data. The storage unit stores the generated encrypted image data. The decryption processing unit decrypts the stored encrypted image data to restore the non-compressed image data. The image output unit forms the print image on the print medium using the non-compressed image data to output a printed matter. The image forming apparatus regards and processes the encrypted image data as the non-compressed image data to generate encryption confirmation image data indicating an encryption confirmation image, so as to associate and then display the encryption confirmation image with the printed matter using the encryption confirmation image data.
摘要:
A system and method to watermark a compressed content encrypted by at least one content key, said content key as well as pre-marking data forming Conditional Access System (CAS) data, said CAS Data being encrypted by a transmission key and comprising at least one signature to authenticate all or part of the CAS Data, said compressed content being received by a client device comprising: a Descrambler having an input to receive the encrypted compressed content and an output to produce an compressed content, a Watermark (WM) inserter directly connected to the output of the Descrambler, said Descrambler and said WM inserter being connected with a Conditioner, said Conditioner executing the following steps: receiving the CAS Data, decrypting the CAS Data with the transmission key, verifying the signature of the CAS Data, and if the signature is valid, transferring the content key to the descrambler and the pre-marking data to the WM inserter, and watermarking by the WM inserter, the decrypted content received by the descrambler using the pre-marking data and the identifier.
摘要:
A computer-implemented process can be operated to create a watermarked copy of a unique original copy of an electronic sales receipt in a first computerized device to a second computerized device. The watermarked copy includes an electronic watermark identifying the copy. The process includes creating the watermarked copy of the electronic sales receipt by copying information from the original copy of the electronic sales receipt to the watermarked copy and providing the electronic watermark within the watermarked copy.
摘要:
A data-bearing image (391) is created from a carrier image (371). The carrier image (371) is scaled to produce a scaled image. A clustered-dot halftone screen is applied to the scaled image to produce a halftone image. A resulting number of cells in the halftone image conforms to a cell count (372) that includes a horizontal cell value and a vertical cell value. Payload data is encoded into the halftone image to produce a data-bearing halftone image, including shifting pixel clusters within cells of the halftone image that include pixel clusters.
摘要:
A method is provided for inserting a digital watermark in an image by an insertion device. Inserting includes: applying a Fourier transform to the image, delivering a 2D Fourier spectrum; inserting the watermark in the Fourier spectrum delivering a modified Fourier spectrum; and applying an inverse Fourier transform to the modified Fourier spectrum delivering a watermarked image. The watermark includes a set of watermarking coefficients each associated with a distinct determined position of a given quadrant among the quadrants of the Fourier domain, the spectral coordinates u and v of which, measured along the two axes of coordinates of the given quadrant and starting from the continuous component and expressed in percentage of the dimensions U and V of the given quadrant, are such that: u>66%×U and v>66%×V. The set of positions associated with the watermarking coefficients defines a convex pattern in the given quadrant.
摘要:
An ultraviolet image pattern is created on a recording medium having florescence properties and being a first color by electronically creating a first electronic pattern ink, the first electronic pattern ink including a second color and including holes, the holes representing areas in the first electronic pattern ink wherein the second color is absent; electronically creating an electronic image region having a pattern; electronically painting, using the first electronic pattern ink, a background of the electronic image region and the pattern of the electronic image region; electronically painting a predetermined portion of the holes with a third color, the third color matching the first color of the recording medium; and rendering, using marking materials, the electronic image region on the recording medium such that the florescence properties of the recording medium are only visible through the holes not painted with the third color when viewing the recording medium using ultraviolet illumination.
摘要:
This disclosure provides methods and systems of embedding and extracting information in a printed document. According to one exemplary embodiment, a method is provided wherein information is encoded by one or more partial or complete gaps in a line associated with a form, and the line gaps are patterned to provide N-bit codes.
摘要:
Methods and systems for providing real time correlation mark images and/or gloss marks. A new font can be created with respect to a prior font, wherein the new font includes a wider foreground than that of the prior font while maintaining the spatial frequency associated with the prior font (one time per font). The new font is then modified to include an inverted modified font by inverting each glyph one time per font and providing an image having the new font. The image is then written and the current color associated with the image is set to white (or to knockout). An operation is then implemented to write on top of the image using the new font.
摘要:
Digital Cameras configured to verify authenticity of digital photos taken with the digital camera and related methods and computer program products are provided. GPS information associated with a photograph taken with the digital camera is obtained. A checksum of pixels that make up the photograph and the obtained GPS information is generated. The generated checksum is encrypted using a private key associated with the digital camera so as to allow verification that the photograph has not been modified.
摘要:
A system and method for embossing a media substrate used for secure transactions. The system includes, but is not limited to, a printer, having a non-transitory computer-readable storage medium having program code for: storing a first plurality of security features, wherein the first plurality of security features comprise embossment features; printing a first embossment feature of the first plurality of security features on the media substrate upon a first predetermined interval; printing a second embossment feature of the first plurality of security features on the media substrate upon a second predetermined interval; and printing the first embossment feature and the second embossment feature on the media substrate of the first plurality of security features upon a third predetermined interval.