Printing with custom inks is of interest both for artistic purposes and for printing security documents such as banknotes. However, in order to create designs with only a few custom inks, a general purpose high-quality gamut reduction technique is needed. Most existing gamut mapping techniques map an input gamut such as the gamut of a CRT display into the gamut of an output device such as a CMY...

background: adverse effect of sun rays mainly uv ray on the human eye documented and protection of eyes is necessary using different methods such as, sun glasses. sunglasses are designed in different colors. the aim of this study was evaluation of the effect of different colors of sunglasses on the visual acuity, contrast sensitivity, stereopsis and color vision. methods: 81 normal subjects wer...

An experimental study of four colors ordinary dye (white, yellow, tibny, blue) the external wall apartment building was carried out in current work, to find range its effect on heating load winter season comparing with dark color cement at 24hr. In southern made two opening, dimensions opening were 1 meter high and 0.3-meter width. Two types walls are built opening. The first bricks covered a l...

Multispectral images are a particular class of images that require specialized coding algorithms. In multispectral images, the same spatial region is captured multiple times using different imaging modalities. These modalities often consist of measurements at different optical wavelengths (hence the name multispectral), but the same term is sometimes used when the separate image planes are capt...

Most afforestation hardwood plantations in the Central Hardwood Forest Region, USA, are established with bareroot seedlings planted in late winter or early spring. This brief planting season is preferred for several logistical and physiological reasons, yet interest in fall planting has increased as a means to extend the planting season. We evaluated effects of a wide range of planting dates on...

The use of colors in the environment of an Intensive Care Unit (ICU) may interfere in the welfare of both professionals and patients. This study is aimed at analyzing the perceptions of professionals and patients regarding the colors used in the intensive care environment, identifying those considered pleasant and unpleasant. This is a descriptive-exploratory research with a quantitative-qualit...

Four formalisms are outl ined. Crystal f ield theory explains the color as well as the f luorescence in transit ion-metal-containing minerals such as azurite and ruby. The trap concept, as part of crystal f ield theory, explains the varying stabi l i ty of electron and hole color centers with respect to l ight or heat bleaching, as well as phenomena such as thermoluminescence. The molecular orb...