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Objective Adjustment On Quality Evaluation Of Color Appearance Of Emerald Green Color

Posted on:2010-12-28Degree:MasterType:Thesis
Country:ChinaCandidate:S ShaFull Text:PDF
GTID:2120360272488010Subject:Gemology
Abstract/Summary:PDF Full Text Request
In this paper, the use of color measurement instrument Colori5 specimens of emerald colored degrees measured parameters. In order to ensure the accuracy of experimental data and the accuracy of the reliability of experimental results and effectiveness of the color measurement instrument Colori5 stability study. 5 Select the color, size, transparency of difference between the larger specimens of emerald, every five minutes through the color measurement instrument Colori5 wide degree of specimen parameters (L , a *, b *) to conduct a survey, a total of 10 measurements , respectively, the actual parameter will be colored with the parameters of the measured value 10 times the average for color measurement, the average color Color i5 on behalf of the stability of color measurement instrument. The experimental results for an average of five color samples are <1, show that the color measurement instrument Colori5 have good stability.Parameters in order to use chroma-based Gem Dialogue emerald green color scheme of an objective calibration, the 61 specimens of emerald in color Gem Dialogue system data into CIE data and specimens the measured data of the comparative study of CIE. Both experiments show that the value of a good response, but the difference between the larger b values, that is, eye color cards for Gem Dialogue it is reasonable to distinguish between main colors of emerald green, but can identify visual color Des smaller (Lunatia or Micro Blue) easy to confuse the difference, it is proposed to increase secondary-color color transparent color mask with the use of cards, and provides the main color-color cards, Des tone color card, color mask in order to increase the use of the order of the color combination, try to refine the color hue.In order to study the background of different brightness of the non-color emerald green color appearance (lightness, saturation, saturation) impact. Selected 58 of the transparent emerald color uniform specimens, Color i5 through the color measurement instrument measuring its brightness in the different context of non-color colors and degrees of the parameters (L , a *, b *), the use of statistical methods of data for analysis. Experiments show that: 1, brightness emerald green background color with the non-lightness increased (increased from 20 to 90) and significantly increased (maximum increase from 40 to 80), and the higher the brightness of its own more vulnerable to non-color background affected (The average slope increased from 0.19 to 0.47), that is, the effect of the performance of the naked eye in the context of brilliant emerald gem degrees than the background brightness in low light even more. 2, emerald green color saturation with the non-background brightness increase (increased from 20 to 90) and appropriate increase (average increase from 10 to 20), and the impact of their different degree of saturation is similar to. that is, the effect of the performance of the naked eye in the context of brilliant emerald gem degree than in the context of low-brightness slightly bright . 3, emerald green hue angle range of non-color as the background and gradually increase the brightness of the divergence (standard deviation increase from 12 to 20), emerald green color brightness by different non-color effect of the background brightness by less than the extent of its influence (P = 0.84), that is, the effect of the performance of the naked eye in the context of brilliant emerald hue degrees smaller than the low-brightness differences easier to distinguish between background.
Keywords/Search Tags:Emerald green, Color, Adjustment, Gem Dialogue, Non-color background brightness
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