The International Color Consortium (ICC) specifies a standard profile format and associated color management architecture. In the version 4 of its specifications, it adopted a Perceptual Reference Medium and an associated gamut (PRMG) for perceptual workflows. The goals of this change were improved interoperability and more pleasing results. In this paper we start evaluating the effect of using...

Declaration This is to certify that this work has been done by me and it has not been submitted elsewhere for the award of any degree or diploma. Abstract In recent years, many imaging systems have been developed, and it became increasingly important to exchange image data through the computer network. Therefore, it is required to reproduce color independently on each imaging device. In the stu...

In this paper we present a spatial gamut mapping algorithm that relies on a perceptually-based variational framework. Our method adapts a well-known image energy functional whose minimization leads to image enhancement and contrast modification. We show how by varying the importance of the contrast term in the image functional we are able to perform gamut reduction. We propose an iterative sche...

RGB directive color reflectors were implemented for bright reflective color LCDs. The reflection gain at a white display state was suggested to be 3.5 times as large as the white standard. The color gamut was found to be as wide as the NTSC standard. There observed little color shifts within the directive angle.

The human eye can accommodate luminance in a single view over a range of about 10,000:1 and is capable of distinguishing about 10,000 colors at a given brightness. By comparison, typical CRT displays have a luminance range less than 100:1 and cover about half of the visible color gamut. Despite this difference, most digital image formats are geared to the capabilities of conventional displays, ...

In this paper the optimization of color accuracy of digital reproductions is approached. Standard color targets currently available on the market, are constituted of colors spread uniformly in the color space, therefore, these targets are usable in any situation, i.e. for any chromatic content of the images to be profiled. The usage of standard color targets becomes an issue when the object tha...

Many types of electronic imaging devices are currently available, including color cathode ray tube (CRT) devices, ink jet printers, offset printing devices, thermal transfer printers, and all of these devices utilize devicedependent color spaces for color specification. However, device-dependent color spaces do not relate to an objective definition of color or human color perception. Therefore,...

The present paper studies the chromaticity gamut of multi-color printing processes. Heptatone (7color) printing – the most promising variant of multi-color printing – offers a significantly larger gamut than a conventional CMYK printing process, approaching CRT and film gamuts. The behavior of the process in the device-independent CIE-XYZ and CIE-L*u*v* colorimetric spaces is explored using the...