We present new methods which transfer the color style of a source image into an arbitrary given target image having a different 3D color distribution. The color transfer has a high importance ensuring a wide area of applications from artistic transformation of the color atmosphere of images until different scientific visualizations using special gamut mappings. Our technique use a permissive, o...

Color constancy refers to the ability to recognize the true color of objects in a scene regardless of the illumination which is incident upon them. While the human visual system is color-constant to a large extent, digital cameras have to rely on fast color balancing algorithms, integrated into their image signal processing (ISP) pipeline, in order to estimate the illumination in a scene and co...

A computer simulation was performed to investigate optimal fourand five-ink sets in order to minimize color inconstancy while maintaining a large color gamut. The effect of including a spectrally-flat black ink on color constancy was explored. The relationship between ink shape and the color constancy of prints was also analyzed. The results show that the ink shape in the middle wavelength regi...

Colour mixing by a halftoning process, as used for colour reproduction in graphic arts and many forms of digital hardcopy, is neither additive nor subtractive. Halftone colour reproduction with a given set of primary colours is heavily influenced not only by the colourimetric properties of the full-tone primaries, but also by effects such as optical and physical dot gain and the halftone geomet...

Simple color-difference formulae and pictorial images have traditionally been used to estimate the visual impact of color errors introduced by image-reproduction processes. But the limited gamut of RGB cameras constrains such analyses, particularly of natural scenes. The purpose of this work was to estimate visual sensitivity to color errors introduced deliberately into pictures synthesized fro...

Microcavites contribute to enhancing the optical efficiency and color saturation of an organic light emitting diode (OLED) display. A major tradeoff of the strong cavity effect is its apparent color shift, especially for RGB-based OLED displays, due to their mismatched angular intensity distributions. To mitigate the color shift, in this work we first analyze the emission spectrum shifts and an...

Extraordinary Optical Transmission Plasmonic Color Filters (EOT-PCFs) with nanostructures have the advantages of consistent color, small size, and excellent color reproduction, making them a suitable replacement for colorant-based filters. Currently, gamut created by plasmonic filters is limited to standard red, green, blue (sRGB) space, which limits their use in future. To address this limitat...

For multiprimary displays, color within the interior of the gamut can be reproduced with several different control values, a situation that is in contrast with the three primary scenario, where the control values are unique. For a given color, the selection of the control values, or color calibration, becomes a fundamental step for color rendition on multiprimary devices. Because spatially smoo...

Colour constancy algorithms range from image statisticsbased pixel intensity manipulation to gamut-mapping methods, and are generally independent of specific image contents. In previous work, we have demonstrated that natural polychromatic surfaces possess distinct chromatic signatures in conecontrast space that may be exploited for colour constancy, and that in human vision, colour constancy i...