A document stitching method based on optimal seam

摘要

With the development and application of the computer, the traditional paper documents can be stored and managed effectively after turning into digital images. In electronization of archives, a single camera is insufficient to gain a whole image clearly. At present, we generally shoot several images for stitching to obtain a complete and clear image. In document stitching, ghost has a quite large influence on fusion effect. A document stitching method based on optimal seam is proposed in this paper. When tilt correction for the archives is finished and overlapping regions are detected, binary images are extracted with OTSU algorithm. The area without archives is detected in the binary image horizontally and vertically by projection method and then search for feasible seams is made for stitching in the blank area so as to avoid ghost. Finally, the optimal seam is determined from the blank area. The experimental results show that the effect of registration ghost is eliminated and a good blending effect is achieved.