数码相机拍摄的透视文本图像的校正

Rectification of Perspective Document Image Captured by Digital Camera

提出了一种数码相机拍摄的透视文本图像的校正方法。文字区潜在的文本框,它在透视文本图像中是一个凸四边形,它对应于原文本中的是一个矩形。应用这种凸四边形与矩形的对应关系可以确定透视变换的单应矩阵,应用该单应矩阵实现对透视文本图像的校正。实验结果表明该方法是有效的。

A rectification method of perspective document image captured by the digital camera was proposed, The potential text margin in the perspective document image is a convex quadrilateral and in the oringinal document is a rectangle. The relation between the convex quadrilateral and the rectangle was used to determine a homographic matrix, The perspective document image was rectified by the homographic matrix. The efficiency is shown by experimental results.