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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"CIELab"”.
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Development of CIELAB colour system for colorimetric detection of heavy metals in wastewater using metal nanoparticles
Thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy in Chemistry in the Faculty of Applied Sciences at Durban University of Technology, 2021.
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The perception of moderate and large color differences in photographic prints: an evaluation of five color-difference equations
… evidence to support their use. While the 1976 CIELAB Color Difference Equation has been applied for some time in the photographic industry, its use in describing the perceived magnitude of large color differences in photographic prints has not been validated. Furthermore, a good deal of …
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Métodos para segmentação de células somáticas do leite bovino e caprino
… são fundamentalmente baseados no espaço de cor CIELAB, no algoritmo de clusterização K-means, na transformada de Watershed e na proposição de dois novos métodos para limiarização unimodal e segmentação da cor. Os resultados experimentais alcançados para um grande número de imagens indicam que os …
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Defining Acceptable Colour Tolerances for Identity Branding in Natural Viewing Conditions
… The CIEDE2000 formula was found to outperform CIELAB despite unexpected outcomes when tested using displays. CIELAB was outperformed in ΔL* by CIEDE2000 for displays. Overall it was found that identity branding colour reproduction was mostly suited to graphic arts tolerances however, to address …
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Potenciación de las propiedades saludables de los vinos
… parámetros de color (intensidad colorante, CieLAB) y mayor puntación en el análisis sensorial que el respectivo testigo.
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Cookies enriquecidos de oleina de palma bruta (Elaeis guineensis) e farinha de feijão caupi (Vigna unguiculata (L) walp) para alimentação escolar: aspectos nutricionais, tecnológicos e sensoriais.
… expansão (cm), textura (N), rendimento (%), cor (CIELab). Para a escolha dos cookies a serem aplicados no teste de análise sensorial nas escolas foi utilizada a função de desejabilidade do programa Statistica 7.0 software, obtendo os valores ótimos dos parâmetros investigados. A avaliação …
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Development of optimal dyeing methods with natural dyes for environmentally friendly hemp textile
… of the dyes. Color trimstimulus values (CIELab) and dye depth values were measured throughout the process. Statistical analysis was done to best explain K/S for the independent variables. Statistical analysis techniques included analysis of variance, significance at 95% confidence, …
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Promuovere la specificazione del colore attraverso l'intelligenza artificiale: Algoritmi, applicazioni e studi percettivi.
… delle immagini RGB nello spazio colore CIELab, che offre una rappresentazione più rappresentazione percettivamente più uniforme dei colori. La ricerca esplora anche un approccio multiview approccio multivisionale alla specificazione del colore, utilizzando l'intelligenza artificiale …
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Factors affecting the quality of low-fat cheeses
… of cheesemilk led to an increase in whiteness. CIELAB data were correlated with Kubelka-Munk analysis, except in homogenisation treatment. Supplementing cheesemilks with amidated-, high-methoxy- and lowmethoxy pectins were investigated in the properties of reduced-fat Cheddar cheese. Increased …
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Appearance and Spectroscopic Characterization of Automotive Coatings for Forensic Purposes
… on Illumination CIEL*a*b* color space (CIELAB). MSP is used on small fragments encountered in forensic cases, but requires extensive sample preparation and expensive instrumentation while color meters are frequently employed by coating manufacturers and portable for field use. The two …
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Sensory and consumer studies as a guide for edamame development and production in the U.S.
… egg' flavor attributes. The a* color coordinate (CIELAB) and green intensity index were significant predictors of appearance liking (p < 0.05) and consumers were willing to pay more for dark green than light green edamame beans. The outcomes of our web-based survey suggested consumers have a …
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Effects of Flavonoids and Ascorbic Acid Derivatives on Non-enzymatic Browning in Peaches
… fresh peaches. Quality was assessed by color (CIELAB system), which was measured using a handheld colorimeter, and ascorbic acid levels of peaches, which was determined using high performance liquid chromatography.
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Untersuchungen zur Anwendbarkeit von Titannitrid- und Zirkonnitrid-Nanopartikeln als Farbpigmente und zum magnetischen Verhalten von Nickel-Nickeloxid-Kern-Hülle-Nanopartikeln
… ZrN nanoparticles. The resultsare given in the CIELAB color system. The analysis indicates, that both speciesare principally suitable for the application as color pigments: depending on thesample parameters, TiN particles exhibit colors in the blue and blue-green partof the color plane, whereas …
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Digital textile printing: colorfastness of reactive inks versus pigment inks
… the samples were tested and the CIELAB color and ΔE* color change were obtained. The samples were also tested using the AATCC gray scale and 9-step chromatic transference scale. Using the Wilcoxin rank sum test the pigment and reactive samples were compared to record any …
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Colour measurement and viewing conditions for non-paperbased substrates
… to device independent colour information such as CIELAB. For printing processes, such information is generated through the colour measurement of a set of colour swatches using a spectrophotometer. Such measurements are uncomplicated for most common paper-based substrates and inks used in the …
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The determination of Dyers' perceived components of colour difference (depth, brightness and hue) between twp similar colours from theor spectral reflectance values
… which have been defined numerically in the CIELAB colour space and previously reported as WSI depth surfaces. The first stage of this algorithm was to generate, using the WSI algorithm, the equi-depth line in the L* C* plane that passes through the L* C* coordinates of the standard. The K/S …
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Optimising durum wheat yield and quality
… grain, flour and pasta was quantified using the CIELAB colour space. High quality durum grain and flour was defined as that with high (>11.5%) protein content, high (>250 s) falling number and high (>18) b* value. The main research objective was to determine if the two management options …
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Hydrophile Polysiloxane als waschbeständige Textilhilfsmittel
… skirt was examined by datacolor measurement and CIELAB interpretation. Further examinations showed that an overdose of silicone during the finishing causes discoloration which is an undesirable effect. In this part, the application process of the reactive functionalized polyquaternary …
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Development of scientifically base management towards a sustainable fishery of the common sea urchin, Paracentrotus Lividus, in Sardinia
… were conducted by a digital colorimeter using CIELAB colour spaces, which defines the colour in terms of 3 coordinate values: lightness (L*), redness (a*) and yellowness (b*). The results suggested that that habitat does affect spine colour but not gonad colour. Spine colour seems to be site …
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Características microbiológicas, físico-químicas e sensoriais de filés de tilápias (Oreochromis niloticus) conservados em atmosferas modificadas sob refrigeração
… microbiológica, química, cor objetiva no sitema CIELab e sensorial de filés de tilápias (Oreochromis niloticus) estocados a 2 ± 1 ºC. Os resultados foram contrastados com aqueles de filés embalados em ar atmosférico (controle). A análise microbiológica dos filés indicou: ausência de Salmonella em …
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