![]() ![]() With Rebelle 5 we will also introduce new color sets with the actual pigments. Rebelle is the first software in the world with real physical color mixing based on traditional pigments in a full RGB color gamut.Įxamples of Rebelle 5 Pigments with different media ![]() handles all RGB colors without causing clipping or distortion Įxamples of Rebelle pigments with saturated hue shifts (on the left) in comparison with RGB colors, which are desaturated and dimmed (on the right). Our solution allows mixing RGB colors as if they were made of actual pigments known from a traditional painting. And the results are incredible!Ĭomparison of Traditional pigments vs. Because our color mixing is based on real pigments, the colors in Rebelle 5 are mixed very realistically - basically the same way as the colors in the real world. This is a BIG DEAL. The traditional artists know what to expect when they use Titanium White, Cadmium Red, or Prussian Blue. Finally, let us introduce you to unparalleled Rebelle Pigments! We defined what we expected from the color mixing, made a thoughtful selection of the traditional paint pigments for which we needed to mix color frequencies, made many more optimizations in Rebelle, and finally – we successfully managed to achieve something extraordinary. During the next year and a half, they bumped into many implementation and optimization issues, fought unknown bugs and eerie creatures :-) but in the end, they came out with an amazing solution. Šárka and her friend Ondřej Jamriška, an old-school coder who also worked on this project, went deep down into the "rabbit hole" filled with colors. The question Peter asked at the beginning of this research: ‚How could we achieve the most realistic color mixing in Rebelle?‘įrom such a "simple" question, numerous complex issues have arisen along our way of research and development. After a throughout discussion, together we decided to explore the depths of the existing color systems and finding a solution for an efficient implementation of the real-world color mixing into Rebelle software. Despite such a model having been introduced, it has never been picked up by graphics software outside the research because the physics behind it is so complicated that it is almost impossible to use it practically in real-time.Ĭoincidentally, Peter Blaškovič, the founder of Escape Motions was approached by Šárka Sochorová, a friend from Czech Technical University in Prague for internship opportunities. This has been studied and reproduced by the model of Kubelka and Munk, who were the first to predict the behavior of pigment mixtures. To put it simply, the real paints get their colors from the mass of pigment particles, which absorb and scatter the light in a complex fashion. Cadmium Yellow, Alizarin Crimson, Ultramarine, etc.) it gets even more complicated because nature and its chemistry get involved. The subtractive colors are cyan, yellow, magenta, and black, also known as CMYK. This color model is used in printing, silk-screening, traditional painting, and other mediums that add pigment to a substrate. In the subtractive color model, pigment is used to produce color using reflected light. When we mix them, we get the color in the middle of the cube – gray. Mixing blue and yellow in a painting software gives you a grayish color instead of green because they are opposite in the RGB cube. When different proportions of red, green, and blue light enter your eye, our brain can interpret the different combinations as different colors.ĭigital software is also built around such RGB representation, which models the mixing of colored lights. The additive color system is used by light sources, such as televisions and computer monitors, to create a wide range of colors. In the middle of the cube is a gray color. When all three colors are combined equally, the result is white light. As more color is added, the result is lighter. Additive color starts with black and adds red, green, and blue light to produce the visible spectrum of colors. It gives us a cube with three sides: R, G, and B. The base additive colors are red, green, and blue, or RGB. This color model describes how light produces the color. We know two primary color systems:Īdditive color system - RGB representation ![]() You may ask, what is the color system anyway? Well, a color system is a method by which color is reproduced. Color system in the computer world is based on RGB color mixing, while in reality it is based on paint pigments. Before we tell you more about the exciting news, let us explain why mixing color on a computer is entirely different from natural media. ![]()
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