Results 261 to 270 of about 1,340,224 (286)

Colour Image Analysis

2001
Historically, machine vision has been applied to monochromatic objects, or those in which colour’ differences are visible as changes in intensity when they are viewed using a monochrome camera. Despite the obvious importance of colour in manufactured goods, machine vision systems capable of processing coloured images are less common.
Paul F. Whelan, Derek Molloy
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Micro-Raman analysis of coloured lithographs

Analytical and Bioanalytical Chemistry, 2004
Raman micro-spectroscopy was chosen for analysis and identification of the pigments present in four nineteenth-century hand-coloured lithographs, as this technique has several advantages over others for this purpose. The possibility of performing completely non-destructive analysis without any sampling is probably one of its most favourable qualities ...
K, Castro, P, Vandenabeele, M D, Rodríguez-Laso, L, Moens, J M, Madariaga   +4 more
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Comparative analysis of colour discrimination data obtained with aperture-colours and surface-colours

Journal of Optics, 1990
New results of chromatic discrimination have been obtained for light transmitted by coloured filters and with a method which guarantees their reproducibility. These results are compared with others obtained for surface-colour presentation through the predictions of several colour-difference formulae: those recommended by CIE (CIELUV and CIELAB), the ...
M Melgosa, E Hita, L Jimenez del Barco, J Romero   +3 more
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Colour Mathematical Morphology For Neural Image Analysis

Real-Time Imaging, 2002
Summary: This paper presents an algorithm for automatic neural image analysis in immunostained vertebrate retinas. We present a useful tool for cell quantification avoiding the losst of information of traditional binary techniques in automatic recognition of images.
Ortiz Zamora, Francisco Gabriel, Torres Medina, Fernando, Juan Navarro, Emilio de, Cuenca Navarro, Nicolás   +3 more
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Colour television image analysis of carious lesions

Calcified Tissue Research, 1975
The new technique of colour television image analysis has been used to produce seven-colour contour maps of the radiodensity of micro-radiographs of enamel caries. This method permits the detailed measurement of the mineral content of enamel carious lesions to a sensitivity of +/-3% of the level of complete mineralisation.
J C, Rodda, K V, Mortimer, E D, Williams
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Computer analysis of Van Gogh’s complementary colours

Pattern Recognition Letters, 2007
Traditionally, the analysis of visual arts is performed by human art experts only. The availability of advanced artificial intelligence techniques makes it possible to support art experts in their judgement of visual art. In this article currently available image-analysis techniques are applied.
Berezhnoy, Igor, Postma, Eric, van den Herik, Jaap   +2 more
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Analysis of reaction times to coloured stimuli

Ophthalmic and Physiological Optics, 1983
Abstract Reaction times were measured for 10‐and 500‐ms coloured stimuli at three different threshold intensity levels. The stimulus intensity of a 1° foveal flash detected with a probability of 0.5 was taken as the threshold intensity level. All flashes were superimposed on a 1000‐td white background. The reaction time distributions were classified in
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Spectroscopic analysis of soil colour

Proceedings of the Indian Academy of Sciences - Section A, 1944
The preliminary investigations reported in the foregoing pages may be summarised thus:-
B. Ramamurthy, B. Viswa Nath
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Analysis of colour‐scaling data

Color Research & Application, 1979
AbstractThere is a need for standardization of the mathematical treatment applied to data generated by magnitude estimation techniques in colour scaling, in which hue, saturation [colourjulness]. and absolute or relative brightness are scaled by observers.
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Analysis of organic colouring and binding components in colour layer of art works

Analytical and Bioanalytical Chemistry, 2005
Two methods of analysis of organic components of colour layers of art works have been tested: IR microspectroscopy of indigo, Cu-phthalocyanine, and Prussian blue, and MALDI-TOF-MS of proteinaceous binders and a protein-containing red dye. The IR spectra distortion common for smooth outer surfaces and polished cross sections of colour layer of art ...
S, Kuckova, I, Nemec, R, Hynek, J, Hradilova, T, Grygar   +4 more
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