How can I quickly scan books and generate PDFs using mobile applications?

How can I quickly scan books and generate PDFs using mobile applications?

Recently, a friend sent me a private message:

Would you be able to scan a book of about 200 pages for me for free?

The [Scan] and [Generate PDF] functions are free every day. merge png to pdf ilovepdf The number is automatically refreshed the next day even if you use them all today.

The algorithms used to scan books are more complex, so everyone has prepared this article, a simple demonstration of how to scan books quickly with a mobile phone.

Open the scan-scan-surface book first.

Click the button to take a picture of the left and right profile pages - the software will recognize them automatically

You can adjust the edges by clicking them at the top and bottom of the page. The software will automatically generate four edges at the top and bottom of the page.

Page 4: Continue scanning!

Perform text recognition or generate pdf files if necessary.

Character recognition

Make a PDF file

It is important to be aware of a few caveats when using the application. By paying attention to these key points, you will be able to sweep the book quickly and easily.

There is a moderate distance between the camera and scanner on the mobile phone.

The camera was so close to the book that the edge was not visible on the screen, so it was a natural mistake not to recognize the page.

There is too much distance between the camera and the book on the left. Panic: The camera is too close to the book on the right.

It is important to contrast the scanned file with the background color.

Software recognizes contours based on the difference in color. Agee uses an exaggerated state in the figure below to demonstrate that the software may default to the white paper range when scanning a document if the colors are too close.

In the same way, if the background has little color difference from the scanning technical file, the same situation may occur.

The scanning area should not be cluttered with anything.

Here's an over-the-top demo by Agy. Oh, are you scanning a book, a headphone box, or an A4 sheet?

Master these skills and pay attention to these three tips to scan a good book with your mobile phone!