Easy reading of a read code is enabled without matching a read range with a specific print section, and without impairing designability of a cylindrical container and clarity of a display print. A cylindrical container has, on the outer surface thereof, a print layer. The print layer has an electronic watermark layer including an electronic watermark image printed thereon, and a blindfold layer that renders the electronic watermark image difficult to be visually recognized. The print area of the blindfold layer matches a part or entirety of the print area of the electronic watermark layer.

Disclosed is an anti-counterfeiting printed material including: a background part for analyzing a distribution of Cyan Magenta Yellow Black (C/M/Y/K) after performing first color separation of an original image into C/M/Y/K, and printing the original image as C/M/Y/K lines each having an included angle preset according to each distribution; and a latent image part formed in a first region of the background part, and printed with the number of C/M/Y/K lines in a ratio different from the number of C/M/Y/K lines of the background part according to each distribution by performing secondary color separation, into C/M/Y/K, of a second region spaced apart from the first region by a preset distance.

This disclosure relates to advanced image signal processing technology including encoded signals and digital watermarking. One implementation is directed to a printed object comprising: a white substrate or background comprising a first area; an ink mixture printed at a first plurality of spatial locations within the first area, the ink mixture printed such that the first area comprises a second plurality of spatial locations without the ink mixture, the ink mixture comprising extender white and Green 7 ink, the ink mixture comprising a volume or weight ratio of 97.5% to 99.75% white extender and 2.5%-0.25% Green 7 ink; in which the first plurality of spatial locations is arranged in a pattern conveying an encoded signal, and in which the white substrate or background and the ink mixture comprise a spectral reflectivity difference at or around 660 nm in a difference range of 8%-30%. Of course, other implementations, methods, packages, systems and apparatus are described in this patent document.

This disclosure relates to advanced image signal processing technology including encoded signals and digital watermarking. One implementation is directed to a printed object comprising: a white substrate or background comprising a first area; an ink mixture printed at a first plurality of spatial locations within the first area, the ink mixture printed such that the first area comprises a second plurality of spatial locations without the ink mixture, the ink mixture comprising extender white and Green 7 ink, the ink mixture comprising a volume or weight ratio of 97.5% to 99.75% white extender and 2.5%-0.25% Green 7 ink; in which the first plurality of spatial locations is arranged in a pattern conveying an encoded signal, and in which the white substrate or background and the ink mixture comprise a spectral reflectivity difference at or around 660 nm in a difference range of 8%-30%. Of course, other implementations, methods, packages, systems and apparatus are described in this patent document.

A method of provisioning a note for use as currency is provided, including receiving a base material and printing a note from the base material. The note includes a first unique identifier and a second unique identifier. The method further includes covering the second unique identifier with a tamper-proof material and covering a back of the second unique identifier with a tamper-evident material. The method also includes recording a transaction associating the first unique identifier and the second unique identifier with a predetermined amount of cryptocurrency in a recordation facility accessible for validation of the cryptocurrency.

A method and system for reducing the appearance of a security feature viewed under UV (Ultra Violet) illumination can include selecting a colorant, wherein the colorant comprises a first UV spectral reflectance property, selecting a matching colored media, which matches a color of the colorant and which comprises a second UV spectral reflectance property that is different from the first UV spectral reflectance property, and adjusting the color of the colorant and a color of the matching color media to match one another and produce an adjusted colorant that facilitates a reduction in a visibility of the security feature based on the adjusted colorant.

This disclosure relates to advanced image signal processing technology including encoded signals and digital watermarking. A printed object is provided including: a white substrate or printed white background comprising a first area; an ink mixture printed at a first plurality of spatial locations within the first area, the ink mixture printed such that the first area comprises a second plurality of spatial locations without the ink mixture, in which the first plurality of spatial locations is arranged in a 2-dimensional pattern conveying an encoded signal. The white substrate or white background and the ink mixture comprise a spectral reflectivity difference at or around 660 nm in a difference range of 8%-30%. Of course, other implementations, methods, packages, systems and apparatus are described in this patent document.

This disclosure relates to advanced image signal processing technology including encoded signals and digital watermarking. A printed object is provided including: a white substrate or printed white background comprising a first area; an ink mixture printed at a first plurality of spatial locations within the first area, the ink mixture printed such that the first area comprises a second plurality of spatial locations without the ink mixture, in which the first plurality of spatial locations is arranged in a 2-dimensional pattern conveying an encoded signal. The white substrate or white background and the ink mixture comprise a spectral reflectivity difference at or around 660 nm in a difference range of 8%-30%. Of course, other implementations, methods, packages, systems and apparatus are described in this patent document.

An image processing method includes: a first obtaining step of obtaining data of an image; a second obtaining step of obtaining additional information; a third obtaining step of obtaining information related to a printable area of a print medium on which the image based on the data obtained in the first obtaining step is printed; determining step of determining a position where the obtained additional information is embedded in the image on the basis of the information obtained in the third obtaining step; and embedding step of embedding the additional information with reference to the determined position.

An image processing method includes: a first obtaining step of obtaining data of an image; a second obtaining step of obtaining additional information; a third obtaining step of obtaining information related to a printable area of a print medium on which the image based on the data obtained in the first obtaining step is printed; determining step of determining a position where the obtained additional information is embedded in the image on the basis of the information obtained in the third obtaining step; and embedding step of embedding the additional information with reference to the determined position.