摘要
黑白图像的彩色化是图像处理领域一个活跃的、有挑战性的研究课题.在总结了其他图像彩色化方法的基础上,提出了一种新型的快速彩色化方法.该方法以不平度作为颜色扩展的约束条件,使用热传导方程来代替颜色混合方法使色块边缘更加平滑,从而大大降低了运算复杂度、提高了彩色化效率.实验表明,该方法不仅速度快,而且能够大大简化对初始着色的要求,并达到很好的彩色化效果.
Colorization of grayscale image is in general an active and challenging area of research in image processing.In this paper,current colorization algorithms are summarized at first.Then a fast colorization algorithm is proposed,based on unevenness.In order to decrease the calculation complexity,this method uses heat conduct equation instead of chrominance blending for making the ridge of color blocks smooth.According to experiments,better colorized results are obtained with faster speed and less sensitivity to the initial color distribution.
出处
《中国科学院研究生院学报》
CAS
CSCD
2008年第2期233-237,共5页
Journal of the Graduate School of the Chinese Academy of Sciences
关键词
黑白图像
彩色化
不平度
grayscale image,colorization,unevenness
