Rodney L. Heckaman Mark D. Fairchild Abstract — The effect of white-channel enhancement as implemented in the Texas Instrument DLPTM digital projector technology is evaluated theoretically using both the CIELAB and the CIECAM02 color appearance models and experimentally through psychophysical testing using real images. Both theory and test results confirm a compression of perceptual gamut in bo...

The paper presents a statistical evaluation of the typological data about color naming systems across the languages of the world that have been obtained by the World Color Survey. In a first step, we discuss a singular value decomposition of the categorization data that led to a small set of easily interpretable features dominant in color categorization. These features were used for a dimension...

A problem of both theoretical and practical importance in image processing is to compare two color images, taking into account the eventual diversities due to translation, or color variations. The aim of this paper is to study the behavior of dissimilarity measures in different color spaces. Five color spaces (RGB, HSI, HSV, CIELab, CIELuv) are studied. Properties of the dissimilarity measures ...

In this paper, a framework for diffusion of color images is presented. The method is based on the theory of thermodynamics of irreversible transformations, which provides a suitable basis for designing correlations between the different color channels. More precisely, we derive an equation for color evolution, which comprises a purely spatial diffusive term and a nonlinear term that depends on ...

A new method for the colorimetric characterization of a printer is proposed. It can also be applied to any other type of digital image reproduction device. The method is based on a computational geometry approach. It uses a 3D triangulation technique to build a tetrahedral partition of the printer color gamut volume and it generates a surrounding structure enclosing the definition domain. The c...

We propose a new filter called Bi-affinity filter for color images. This filter is similar in structure to the bilateral filter. The proposed filter is based on the color line model, which does not require the explicit conversion of the RGB values to perception based spaces such as CIELAB. The bi-affinity filter measures the affinity of a pixel to a small neighborhood around it and weighs the f...

Abstract Sensory properties of foods mainly affect purchasing decisions. In case sausages, deterioration pigments meat and spices cause discolouration, while lipid oxidation leads to the formation off-odours, these two processes are connected. Lipid promotes conversion pigments, metmyoglobin accelerates oxidation. The scope study was investigate relationship between amount malondialdehyde equiv...