中国木版年画的画版处理技术研究

为了对中国木板年画进行数字化保护，本文以套色印刷的朱仙镇木板年画为例， 采用图像处理技术从年画中提取出线版和色版。处理流程分为前处理、线版提取、色版提取和 后处理四个部分。以像素的RGB 和CMY 颜色分量比率计算灰度值，将图中大部分彩色转化为 白色，依此对年画进行去色处理；再经过阈值处理、形态学处理和线条光滑获得年画的黑色线 版。主要利用K-均值聚类方法获取年画的色版。本文的处理结果很好地表现了年画的画版原貌， 所提出的处理框架对于中国木板年画的数字化保护具有较高的实用价值。

A Study of Processing Technology of the Prints in Chinese WoodblockNew Year Prints

Aimed at the digital protection of Chinese woodblock new year prints, this paper, using the woodblock new year prints with chromatographic print of Zhuxian town as examples of processing, extracts the line prints and color prints from the new year prints with the technology of image processing. The procedure of processing is divided into 4 parts, i.e. pre-processing, line print extracting, color print extracting and after-processing. First, we should figure out the greyscale with the RGB of pixel and CMY color components ratio and transform most different colors of the new year prints into white so as to remove the colors; then after using the threshold processing, morphological image processing and line smoothing we can obtain the black line prints of the new year prints. We gain the color prints by K-means clustering method. The results of these processing can demonstrate the original appearance of new year prints and the processing procedure proposed in this paper is of great value to the digital protection of Chinese woodblock new year prints.