نتایج جستجو برای: invisible inks
تعداد نتایج: 12732 فیلتر نتایج به سال:
An algorithm is described to select a set of six inks from a given ink database for a spectral-based six-color printing system which minimizes metamerism. Since there are C(n, 6) ink combinations for an ink database containing n inks, the number of ink combinations is a geometric figure when n is large. There are obviously impossible ink combinations which can be removed analytically. Vector co...
Printing with a large number of inks, also called N -ink printing, is a challenging task. The challenges comprise spectral modeling of the printer, color separation, halftoning, and limitations of the amount of inks. Juxtaposed halftoning, a perfectly dot-off-dot halftoning method, has proved to be useful to address some of these challenges. However, for juxtaposed halftones, prediction of colo...
We present a model of steganographic systems which allows to evaluate their security. We especially want to establish an analogy to the known-plaintext-attack which is commonly used to rate cryptographic systems. This model´s main statement is that the embedding operation of a steganographic system should work indeterministic from the attacker´s point of view. This is proved by means of informa...
316L and Cu‐based inks are developed to 3D‐printed tetrachiral auxetic structures. The main objectives of the work study effects powders composition powder:binder volume ratio on rheological properties printability inks. Following these results, customized Gcode is using FullControl Designer open‐source software 3D print intricate results reported in this show how powder (316L versus Cu) has le...
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