Developing Skin-color Mapping Algorithm Based Feature Points of Facial Images
| Autor: | Lin Lu, 盧霖 |
|---|---|
| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 When users select cosmetics, they may spend much time in the process of trying the products. If we can provide a series of template images, they can select the cosmetic effects on their face to do a simulation result using digital facial makeup technology. The procedure can save the time of trying cosmetic and reduce the damage caused by makeup and cleaning up process to help the user choose the proper cosmetics. This study presents a comprehensive digital makeup process to achieve this goal. It can simulate a similar cosmetic effect on a user’s facial image from the original image with sample makeup images. At the beginning, we captured the feature points on the contour of face. The selecting part of the face with makeup was morphed into the other one who was without makeup. In the processing of color transformation, the 8-bit RGB signals was converted to the CIELAB color space, which includes the lightness channel and the color channels. With edge preserving smooth method, the detailed lightness layer was processed from subtracting lightness channel with smoothed image. And the smoothed image can be regarded as the blurred lightness layer. Finally, through a series of image fusion processing, and converting the CIELAB signals back to 8-bit RGB signals, digital facial makeup was completed. Ensured the digital makeup process, the paper adjusted the parameters related with lightness and chroma to generate 3 simulated images whose cosmetic effect were between original image and sample makeup image. Then, the image of a part of cheek, which was selected by the feature points of face, was picked up to calculate the average CIELAB values and the color difference between the original image and simulated images. The simulated image is as near to sample makeup image in both lightness and chroma as the parameter become larger. It proved that the result achieved the purpose of cosmetic simulation truly. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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