Determination of 255 just noticeable color gray level differences for improved color palette

2018 ◽  
Author(s):  
Patrick Gardner ◽  
Daniel D. Desjardins ◽  
James C. Byrd
Keyword(s):  
Gray Level ◽  
Color Palette

Statistical Image Analysis of Psychological Projective Drawings

2005 ◽  
Vol 9 (5) ◽  
pp. 453-460 ◽  
Author(s):  
Kazuhisa Takemura ◽  
◽  
Iyuki Takasaki ◽  
Yumi Iwamitsu ◽  
Keyword(s):  
Image Analysis ◽  
Difference Method ◽  
Gray Level ◽  
Projective Drawings ◽  
Standard Analysis ◽  
Projective Drawing ◽  
Statistical Image Analysis ◽  
Level Difference ◽  
Gray Level Histogram

We propose statistical image analysis for psychological projective drawings to facilitate assessing the reliability of the projective drawing making the determination of its validity difficult. Standard analysis involves (1) drawing a picture, (2) scanning the drawing, (3) dividing the drawing, (4) analyzing the gray level histogram moment (GLHM), (5) applying spatial gray level dependence method (SGLDM), (6) applying the gray level difference method (GLDM) for the drawing, and (7) interpreting the drawing. To demonstrate the proposed procedure, we used the tree test (Baum test). Three adults were presented with blank A4 paper and asked to draw a picture of a tree with fruit on it. Drawings were analyzed by statistical image analysis and results interpreted clinically.

scholarly journals Gray Level Image Threshold Using Neutrosophic Certainty

2019 ◽  
Author(s):  
Vasile Patrascu
Keyword(s):  
New Method ◽  
Gray Level ◽  
Gray Level Image

This article presents a new method of segmenting images with gray levels. The method is based on determining several thresholds for separation of gray levels. The determination of these thresholds is done using the certainty of the neutrosophic information. The concept of this method can be stated simply: to choose the local maximums for the neutrosophic certainty.

scholarly journals CURRENT TRENDS OF THE USE OF ECO-MATERIALS IN THE DESIGN OF LIGHT INDUSTRY PRODUCTS

2019 ◽  
pp. 20-27
Author(s):  
K. L. Pashkevych ◽  
O. V. Kolosnichenko ◽  
A. M. Veklych ◽  
Т. А. Ovdіienko
Keyword(s):  
Practical Significance ◽  
Fashion Industry ◽  
Design Development ◽  
Light Industry ◽  
Basic Principles ◽  
Systematic Analysis ◽  
Color Palette ◽  
Current Trends

The purpose. Analysis of the basic directions of eco-design; development of classifications of eco-materials; determination of perspectives of their use in the design of the handbags. Methodology. The research is based on systematic analysis of eco-materials in clothes and in handbags, as well as on general methodology of clothes and accessories design. The methods of system-structural analysis and visual-analytical method are used at different stages of the research. Results. The basic principles of eco-design have been studied, the classification of eco-materials has been developed, the tendencies of using eco-materials in the design of handbags have been determined, the trends of fashion have been analyzed and the collection of handbags made of cork material has been created. The use of eco-materials in the design of light industry products makes it possible to obtain new aesthetic properties, thereby opening new opportunities for the development of the fashion industry. The use of eco-materials promotes for the development of new constructive techniques by the designers, for the creation of the latest technologies in fashion industry; it makes it possible to diversify the artistic solution of the costume and to improve its expressiveness. Scientific novelty. The regularities of formation of accessories collections in eco-style, as well as the basic hallmarks of style (color palette, accessories and furnishings) are determined. Practical significance. The collection of eco-style handbags with the use of cork material, based on current fashion trends, is developed.

scholarly journals SPECTROPHOTOMETRIC COLOR DETERMINATION OF CERAMIC PIGMENTS FOR CONSTRUCTION CERAMICS AND REGIONAL INNOVATION SYSTEM

2021 ◽  
pp. 3-7
Keyword(s):  
Innovation System ◽  
Transition Element ◽  
Isomorphic Substitution ◽  
Ceramic Pigments ◽  
Transition Elements ◽  
Regional Innovation ◽  
Absorption Bands ◽  
Color Palette ◽  
Silicon Ions

The purpose of this work is the spectrophotometric determination of the color of ceramic pigments for the development of technology for the production of high-quality ceramic paints of a wide color palette for decorating building ceramics, porcelain and faience products. In this regard, using the principles of heterovalent isomorphic substitution of atoms in crystals, the compositions of ceramic pigments were designed on the basis of the anorthite derivatives containing transition elements with the general formula Са1-хMexAl2+xSi2-xО8, where calcium and silicon ions were replaced by aluminum and transition element, Ме – Cо, Ni, Fe, Cr. The color characteristics were taken on the UV-2600 spectrophotometer with «UV Probe» software. Measurement of wavelengths was in the range of -220-1400 nm. For Fe3+ with tetrahedral coordination, the brown color is due to the d–d transition. The absorption wavelengths of the samples corresponded to 758-283 nm. Со2+ is characterized by a coordination number of 4, the wavelengths of the absorbed light are 1328, 776, 625, 551, and 408 nm. In this case, the brightness varies from 5 to 64%. The color of the samples is violet-blue. For the yellow-green complex [NiО6], the absorption bands are located at ⅄ = 894, 693, 622, 385. The absorption spectra of chromium-containing pigments are characterized by the presence of maxima in the region of 536, 408, 310 nm, which corresponds to the green region of the spectrum

Determination of Focal Plane in Digital Holography Based on Integrated Gray-Level Gradient Method

2011 ◽  
Vol 48 (11) ◽  
pp. 110901 ◽  
Author(s):  
李光勇 Li Guangyong ◽  
黄亮 Huang Liang ◽  
唐丽丽 Tang Lili ◽  
杨岩 Yang Yan
Keyword(s):  
Gradient Method ◽  
Focal Plane ◽  
Digital Holography ◽  
Gray Level

Application of Gray Level Co-Occurrence Matrix Analysis as a New Method for Enzyme Histochemistry Quantification

2019 ◽  
Vol 25 (3) ◽  
pp. 690-698 ◽  
Author(s):  
Milorad Dragić ◽  
Marina Zarić ◽  
Nataša Mitrović ◽  
Nadežda Nedeljković ◽  
Ivana Grković
Keyword(s):  
Texture Analysis ◽  
Enzyme Histochemistry ◽  
Cell Types ◽  
Matrix Analysis ◽  
Qualitative Assessment ◽  
Specific Cell ◽  
Gray Level ◽  
Characteristic Analysis ◽  
Occurrence Matrix

AbstractEnzyme histochemistry is a valuable histological method which provides a connection between morphology, activity, and spatial localization of investigated enzymes. Even though the method relies purely on arbitrary evaluations performed by the human eye, it is still wildly accepted and used in histo(patho)logy. Texture analysis emerged as an excellent tool for image quantification of subtle differences reflected in both spatial discrepancies and gray level values of pixels. The current study of texture analysis utilizes the gray-level co-occurrence matrix as a method for quantification of differences between ecto-5′-nucleotidase activities in healthy hippocampal tissue and tissue with marked neurodegeneration. We used the angular second moment, contrast (CON), correlation, inverse difference moment (INV), and entropy for texture analysis and receiver operating characteristic analysis with immunoblot and qualitative assessment of enzyme histochemistry as a validation. Our results strongly argue that co-occurrence matrix analysis could be used for the determination of fine differences in the enzyme activities with the possibility to ascribe those differences to regions or specific cell types. In addition, it emerged that INV and CON are especially useful parameters for this type of enzyme histochemistry analysis. We concluded that texture analysis is a reliable method for quantification of this descriptive technique, thus removing biases and adding it a quantitative dimension.

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

Distance to SN 1987A and the LMC

1999 ◽  
Vol 190 ◽  
pp. 549-554
Author(s):  
Nino Panagia
Keyword(s):  
Angular Size ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Light Curves ◽  
Distance Modulus ◽  
Absolute Size ◽  
Sn 1987A

Using the new reductions of the IUE light curves by Sonneborn et al. (1997) and an extensive set of HST images of SN 1987A we have repeated and improved Panagia et al. (1991) analysis to obtain a better determination of the distance to the supernova. In this way we have derived an absolute size of the ringRabs= (6.23 ± 0.08) x 1017cm and an angular sizeR″ = 808 ± 17 mas, which give a distance to the supernovad(SN1987A) = 51.4 ± 1.2 kpc and a distance modulusm–M(SN1987A) = 18.55 ± 0.05. Allowing for a displacement of SN 1987A position relative to the LMC center, the distance to the barycenter of the Large Magellanic Cloud is also estimated to bed(LMC) = 52.0±1.3 kpc, which corresponds to a distance modulus ofm–M(LMC) = 18.58±0.05.

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