关键词: 彩色化, 颜色转移, 聚类, 直方图匹配

Abstract: With regard to the low speed, unsatisfactory results and high manual intervention of color-transfer colorization algorithm, a new colorization algorithm was introduced. Firstly the problem of clustering number selection was resolved during image clustering, then object image and source image were segmented respectively using clustering algorithms. After that, histogram matching algorithm was adopted for object block images. To achieve local images colorization, the color was transferred from source block images to object block images. Finally, colorized block images were merged. The experimental results show that the algorithm is better than the previous in terms of speed, quality and automation of colorization.

Key words: colorization, color-transfer, clustering, histogram matching