Abstract:

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.

Key words: image segmentation, K-means algorithm, thresholding, Chinese woodblock new year prints