Skin detection is an important preprocessing step for many applications. In some cases, reliable detection is needed under the real-world's challenging illumination conditions, that is, when the prevailing illumination does not correspond to the one used in calibration. Our particular goal in this paper is to design and study a three-sensor camera for these kinds of illumination conditions. Thi...

A comprehensive management program for urban hemlock, Tsuga canadensis (Carriere) under pressure of Tsugae adelges (Annand) is presented. Hemlock management includes assessment of hemlock condition noting HWA infestation and its impact to tree health, soil and tissue analyses, therapeutic intervention(s), and application of soil amendments to manage environmental stresses. The key to optimizing...

PURPOSE Macular pigment (MP) acts as a prereceptoral filter which selectively absorbs short wavelengths. It has the potential to alter color vision but the literature is conflicting on whether it does and, if so, to what extent, possibly reflecting differences between color mechanisms and color tests. This study was designed to identify and investigate relationships, if any, between MP optical ...

m In the detection of color vision deficiencies, the focus is not only on the disturbed color axis, but also on the degree of disturbed color vision. Therefore, in order to find out the normal sum of errors, we evaluated this color test in a normal population. Methods: 95 subjects (m:f=71:24) without any ocular or general chronic disease were tested monocularly with tie desaturated Roth 26 HUE ...

La investigación consistió en la evaluación de calidad del suelo una mecánica (lubricadora) ubicada parroquia San Camilo, cantón Quevedo, provincia Los Ríos, con coordenadas UTM: 671800 (S) y 9887194 (O). metodología utilizada toma muestras para el análisis parámetros físico químicos (contenido agua suelo, materia orgánica, densidad aparente, color por método Munsell, real picnómetro, pH conduc...

nitrite is responsible for some characteristics of cured meat products such as color, flavor and suppressing the outgrowth and production of toxin from clostridium botulinum. despite all of its desired properties, nitrite is responsible for the formation of carcinogenic n-nitrosamine. in this study, nitrite-free and low-nitrite meat curing systems were developed to eliminate or reduce nitrite f...

PURPOSE Color vision and self-reported visual function in everyday life in young adults with Attention-Deficit/Hyperactivity Disorder (ADHD) were investigated. METHOD Participants were 30 young adults with ADHD and 30 controls matched for age and gender. They were tested individually and completed the Visual Activities Questionnaire (VAQ), Farnsworth-Munsell 100 Hue Test (FMT) and A Quick Tes...

The apparent color of an object within a scene depends on the spectrum of the light illuminating the object. However, recording an object's color independent of the illuminant spectrum is important in many machine vision applications. In this paper the performance of a blackbody-model-based color constancy algorithm that requires four sensors with different spectral responses is investigated un...

In this paper we discuss the role of curvature in the context of color spaces. Curvature is a differential geometric property of color spaces that has attracted less attention than other properties like the metric or geodesics. In this paper we argue that the curvature of a color space is important since curvature properties are essential in the construction of color coordinate systems. Only co...