Print-based visual security features
Security features ensuring the authenticity of banknotes, checks, identity documents, diploma and business documents as well as of valuable goods are of high importance in todayâ€™s society. We briefly describe three security features that rely on color prediction models. The color prediction models are used both in forward mode to predict a color from given surface coverages of the inks and in inverse mode for computing the surface coverages of the inks in order to create a desired target color. After describing the security features, we will explain how the cellular ink-spreading enhanced Yule-Nielsen modified spectral Neugebauer model works and how it can be applied to create security features.