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Years of research (since 2014) of the properties of colour twins based on InfraredArt theory the recording in the visible (V) and near-infrared (NIR) spectra, allowed the image to be depicted in two spectral ranges. Continued work in the field of InfraredArt painting led to the idea in 2022 of applying this artistic method to creating an artistic wool rug with a double (dual) image. This was made possible through collaboration with designers and technologists at the company reGalerija in Zabok. After numerous atte...

The overpainted layers reveal the artist’s working process, the way he created his work in different phases until the final painting. Photographing paintings in near-infrared spectrum (NIR/IR reflectography) also provides protection against counterfeit art paintings. This paper investigates the intrinsic properties of colorant twins based on the InfraredArt theory, which expands the knowledge about the light absorption response in the visual (V) and near-infrared spectrum (NIR). The key support for the establish...