Correction of the Scanned Image of the Book
书籍扫描图像的纠正

Due to its spine the book can not be set as close to the flat bed of the scanner as a paper. As a result, the obtained image will suffer from distortion, variant brightness and blurring. In this article a method based on edge extraction, linear image transformation and histogram modification is proposed to address the mentioned problem. Experimental results show that the proposed method can correct the image distortion and brightness variance problems quickly and precisely.