New Integrations of Designers’ Solutions for Images in the VIS/NIR Spectral Area

People experience light only in wavelengths from 400 to 750 nm. However, matter absorbs and reflects light in a much broader spectrum. This paper introduces dual design of images intended for separate recognition in two spectral areas. Two images are located on a textile jacket in the same print and at the same spot. Human eye sees one image, while the other image is visible by infrared cameras. The difference in visibility results from different responses of dyes. The paper introduces a new way of presentation, numerical measurement, and mixing of dyes called “Twins of colors and dyes”. This consists of two sets of dyes that are identical in colors in the visible spectrum but manifest differently in the near-infrared area. Our research results in a double image on a textile jacket, yet dual graphics can lead to many other applications. Examples include forensics, where the relationship between the two images can either reveal or hide significant information.