为了兼顾图像镶嵌在拼缝附近的平滑过渡和整体色调的一致性，提出了一种基于向导矢量场的图像镶嵌算法。该算法针对现有图像镶嵌算法很难适应待镶嵌图像之间存在较大灰度差异这一问题，首先构建具有待镶嵌目标像素分布特性的向导矢量场；然后在此矢量场的引导下，使镶嵌目的区域的像素值经过插值、迭代不断被更新，并使得拼缝附近处的梯度值达到最小来获得局部光滑过渡、全局和谐的理想镶嵌图像。试验结果验证了该方法的有效性和适应性。

In order to give attention to both the smoothness of the boundary area near the seam and the coincidence of globe intensity in a resultant mosaic image simultaneously, an image mosaic method based on oriented vector field is proposed in this paper. With respect to the problem that it is very difficult for the existing image mosaic algorithms to be adaptive for the big gray difference between the to-be-mosaic images, an oriented vector field with the distributional characteristics of to-bemosaic object is set up at first. And then the resultant mosaic object is updated by interpolating and iterating under the guidance of the vector field. Finally, when the minimum gradient value near the seam is achieved, an ideal mosaic image with the effect of harmony in globe, and local smooth transition can be obtained. The experimental results demonstrate the effectiveness and adaptability of the presented algorithm in this paper.