基于游长平滑的文档图像倾斜校正

图像获取设备将纸质文档转换为文档图像时，文档图像不可避免地存在一定的倾斜。目前，对于倾斜文档图像的处理仍然存在许多困难，因此有必要对倾斜的文档图像进行倾斜校正。但是文档版面十分复杂，包含文字、图像、图形和表格等内容，所以文档图像倾斜校正存在着一定的困难。文章提出了基于游长平滑处理的文档图像倾斜校正方法，实验表明该方法具有倾斜校正速度快、精度高和适应性强的特点。已经在重庆市北碚区档案管理数字化系统中得到成功应用。

Document Images Skew Correction Based on Run-length Smoothing

When the document images are gathered through the image devices, the skewness cannot be avoided. Nowadays, it is still very difficulty to process th e skew document images, so it is necessary to correct them. But the layout of th e document, which includes words, images and graphics, is so complicated that th e correction of the skew images is very hard. The paper introduces a method base d on run-length smoothing, which is proved to be fast, precise and robust. It ha s been successfully applied in the archive management digitalization system.