J4 ›› 2015, Vol. 42 ›› Issue (4): 127-132+170.doi: 10.3969/j.issn.1001-2400.2015.04.021

• Original Articles • Previous Articles     Next Articles

Recolor method for the fading terracotta warrior  using the texture image

LI Na1;GENG Guohua1;GONG Xingyu2;WANG Xiaofeng1   

  1. (1. Institute of Visualization Technology, Northwest Univ., Xi'an  710127, China;
    2. College of Computer Science and Technology, Xi'an Univ. of Science and Technology, Xi'an  710054, China)
  • Received:2014-04-08 Online:2015-08-20 Published:2015-10-12
  • Contact: LI Na E-mail:mamawork@sina.com

Abstract:

For the recolor problem of the terracotta warrior's fading texture, we make an improvement on the Welsh algorithm. By using local standard deviation, this paper presents a new mixed color distance of color transfer algorithm based on independent component analysis (ICA) In lαβ color space,  an ICA analysis of the gray source image and color target image are made using the Fast ICA, so that two types of image data have non-Gaussian distribution and are independent of each row vector in color space. Then, the best matching color is determined by the mixed color distance measurement function founded on local standard deviation. And the color transfer is completed from color target image to gray source image. Experimental results show that the algorithm can improve the color transfer issues of the Welsh algorithm in different colors points of the same brightness. At the same time, color information of the terracotta warrior's gray texture can be better recolored.

Key words: color transfer, independent component analysis, local standard deviation, digital conservation, terracotta

CLC Number: 

  • TP391