一种基于网格的数码相机数字化图像纠正拼接算法

随着数码相机的不断普及和数字化图书馆建设步伐的加快,利用数码相机对文档文件进行数字化成为一种趋势,但采用数码相机进行数字化时,由数码相机的镜头造成的几何畸变给数字化后的图像拼接带来一定的困难。为了纠正这种几何畸变,提高数码相机数字化的质量,本文提出一种基于网格的图像纠正拼接算法。该算法首先通过计算每个网格的变形参数来纠正图像的几何畸变,再逐个网格来进行图像拼接。试验表明,该算法能对数码相机数字化的文档类图像进行批量的纠正拼接,并且计算速度快,精度高,拼接效果好等优点,为文档类文件用数码相机进行数字化提供了一定的技术支持。

A digital camera digitization image rectification and mosaic algorithm based on grids

With the continuing popularity of digital cameras and the speeding up of digital library management,it is becoming a trend to digitizing documents with digital camera.However,when using digital cameras for digitalization,image rectification and mosaic will become a big problem.For the rectification of this geometric distortion,this paper puts forward an image mosaic method based on grids.At first,the geometry distortion of the picture is corrected through calculating the deformation parameter of each grid.Then the mosaic is finished on the grid one by one.The experiment shows that this algorithm can concatenate a large amount of documents at one time,and has the advantage of fast calculation and high precision,which can offer certain technical support for files digitization by digital camera.