THE COLORS OF NATURAL WATERS

The production of cheese-flavored extruded snack exploiting anti-microbial properties of natural food colors

In this study, the effects of some edible pigments used in the food industry on pathogenic bacteria were investigated. For this purpose, five natural food colors were selected consisted of curcumin, β-carotene, paprika oleoresin, lycopene and turmeric oleoresin. The impacts of each color on bacterial species including Salmonella enterica, Escherichia coli, Bacillus cereus<...

Natural Dyes, Our Global Heritage of Colors

Rendering Natural Waters

Creating and rendering realistic water is one of the most daunting tasks in computer graphics. Realistic rendering of water requires that the sunlight and skylight illumination are correct, the water surface is modeled accurately and that the light transport within water body is properly handled. This paper describes a method for wave generation on a water surface using a physically-based appro...

Rendering Iridescent Colors Appearing on Natural Objects

Iridescent colors appearing on natural objects, such as the feathers of a hummingbird, surfaces inside seashells, and shells of beetles, are beautiful and impressive. The cause of such iridescent colors is interference of light inside multilayer film structures covering the natural objects. This paper proposes a method for realistically rendering iridescent colors appearing on natural surfaces,...

On the distribution of colors in natural images

When analyzing the RGB distribution of colors in natural images we notice that they are organized into spatial structures. This observation is not new, quoting Omer and Werman in [5]: “... when looking at the RGB histogram of real world images, two important facts can clearly be observed; The histogram is very sparse, and it is structured.[...] This is because the colors of almost any given sce...