The forger USES an optical scanner to turn a legitimate document into a digital image stored in the computer's memory.
伪造者用一台光学扫描器把正式文件变成数字图像，存放在计算机的储存器中。
2
The scanner is commonly used in OCR recognition system to acquire document original image, and the image transmit to computer for document layout analysis and OCR recognition.
OCR识别系统通常采用扫描仪获取表格文档的原始图像，由计算机进行版面分析和字符识别。
3
Absrtact: Document text images captured by book scanner or camera usually require resolution enhancement for other usage, present a text image enhancement algorithm based on Markov random field.