Abstract
In this paper, we publish the algorithm to create a dual image manifested in the infrared and visible spectrum. To distinguish the information in the two light spectra, twin dyes are introduced for the inkjet plotter and printing realization for garment and canvas items. The graphics, invisible to the naked eye, are designed for the near infrared (NIR) spectrum and are suitable for urban security where surveillance cameras with IR detectors are installed. The duality of dyes is presented in tables, and the analysis is a basis for programming and developing new algorithms for the application of “Infrared Dyeing” on different materials and printing technologies. Through spectroscopy, this innovative solution demonstrates twin colorants by printing in one pass through the plotter such that one image remains visible, while the other one is hidden to the bare eye. The uniform and the school bag cover presented in this paper are kept simple in design because they incorporate information hidden to the naked eye but visible with surveillance cameras and all the other infrared detectors. The article provides mathematical models of duality coloring as a basis for programming the graphic prepress that merges both of the images, the visual one and the infrared one. A topic is the fusion of two images with colors that represent two graphs, with independent contents for the visual and near-infrared spectrum.
Highlights
The digital technology of hidden data in uniform design extends from the visual to near-infrared spectrum
The software solution in INFRAREDESIGN® technology of merging two images was preceded by the study of twin colors for textile material [1]
INFRAREDESIGN® is a new method of dual marking of clothing; it is the result of the experimental development of technology and software solution for applying the twin colorants on clothing and equipment of target groups
Summary
The digital technology of hidden data in uniform design extends from the visual to near-infrared spectrum. By spectroscopy of dyes and pigments, we obtained accurate results about the properties of each colorant in two spectral states: visual and infrared. The garment is given a dual detection state, separated by two spectral regions: visual and near-infrared. The novelty in the IRD algorithm with which it is planned to provoke dual design and their appearance separately in the visual and infrared spectrum does not depend on the height of the edition, i.e., on the number of copies of such clothing.
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