we are working on ebook. we are creating ebook which give feel like real book. Amazing, very earlier I have seen this, But did not thought about it. For ebook, we click clear pictures of book’s chapter, and also scan book’s chapter, Then compare its quality. we use OCR (Optical character Recognition). Basically OCR is used to remove noise from picture. It create clear picture, crop it accordingly. Most important feature of OCR it creates .txt file from the picture. It means that we can select text from picture, create latex file easily . Now I am creating a Latex of 12th chapter, using text file created with OCR. If I did not use OCR then I have to write all text manually. OCR saves your time. tesseract, CamScanner, Textfairy are same as OCR. Tomorrow I also use CamScanner for scanning purpose.