对Welsh灰度图像彩色化算法的改进  

Improvement of Welsh′s Grey Image Colorization Arithmetics

作　　者：刘勇[1] 邵常勇[1] 

机构地区：[1]山东电子职业技术学院,山东济南250014

出　　处：《现代电子技术》2009年第24期141-143,共3页Modern Electronics Technique

摘　　要：把灰度图像变成彩色图像可以增强视觉效果和识别能力,因此研究灰度图像的彩色化,寻找更好的算法具有重要意义。分析Reinhard的颜色传输算法和Welsh的灰度图像彩色化算法,发现了其处理速度慢的缺点。基于图像的空间相关性,提出一种新的搜索策略,实现像素的快速匹配,提高了处理速度。使用该匹配方法,对Welsh算法进行改进,并利用分块处理的方法实现了基调相近图像的彩色化。通过仿真分析,该改进算法在提高处理速度的同时,得到了很好的彩色化效果。By turning grey images into colored images, the visual effect and recognition capability can be strengthened. So it is of great significance to do research on the colorization of grey images and find a better caculation method. Based on the analysis of Reinhard＇s color transfer arithmetic and Welsh＇s grey image colorization arithmetic,this paper finds out their defect （relatively slow processing speed） and based on the space relativity of images,comes up with a new searching strategy, con tributing to the quick match of pixels and the increase in processing speed, hence, improves the Welsh arithmetics, and mean-while realizes the colorization of images with similar colors by applying the block processing measure. The simulation analysis shows that this new method not only improves processing speed,but brings excellent eolorization effect.

关 键 词：灰度图像 彩色化 图像处理 空间相关性 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]