提出了一种基于缝隙码的区域填充算法。给出了单条缝隙码的填充算法，及多连通区域或整幅图像的快速填充算法，能填充任意复杂图像区域，对多连通区域或整幅图像填充时，算法只对图像区域填充，不用对区域外或区域内部的孔洞进行填充，对非二值图像，该算法不需要辅助内存空间。实验结果表明，对比现有的算法，本文算法具有速度快、效率高等优点。

The paper proposed a region filling algorithm based on crack chain code description. The algorithm of single crack chain code and a fast filling algorithm about the complicated connecting region or the global image are given, in which only the image regions is filled. Compared with the conventional algorithms, this algorithm requires no storage and works well for any complex regions. Experimental results prove that it is faster and more efficacious.