'Virtual Fading' of Art Objects: Simulating the Future Fading of Artifacts by Visualizing Micro-Fading Test Results
| Autor: | Paul M. Whitmore, Hannah R. Morris |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Journal of the American Institute for Conservation. 46:215-228 |
| ISSN: | 1945-2330 0197-1360 |
| DOI: | 10.1179/019713607806112279 |
| Popis: | The authors examine the importance of visualizing the color changes of colorants exposed to visible light, and use this information to create a "virtually faded" art object. The color informa- tion collected during lightfastness measurement (as CIE L*a*b* values) with a micro-fading tester can be transformed to RGB values, and color swatches rep- resenting the original and faded colors displayed on a computer monitor. Such demonstration of the ap- pearance changes can help to visualize the degree of color change and the precise nature of that change, which may not be simple lightening of the color but could also include hue or chroma changes. Judging the visual impact of a light-induced color change re- quires viewing the altered color in its context within a particular image. Digital renderings of paintings were created with Adobe Photoshop and Matlab, using a number of fugitive colors, the fading characteristics of which had been recorded with prolonged micro- fading tests of 100-1920 minutes in duration depend- ing on the light dosage required for the color to no longer be changing. Based on this information de- scribing the appearance of each of the colors as it |
| Databáze: | OpenAIRE |
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