How to use mobile App to quickly scan books to generate PDFS?

A few days ago, convert pdf to word online for free adobe acrobata friend sent a private message:

I need to scan a book of about 200 pages and make a PDF document. Can I do this for free?

I'm proud to say yes. merge png to pdf ilovepdfThe [Scan] function is completely free, and the [Generate PDF] function is free to use every day. Even if it is used up today, the number of times can be automatically refreshed the next day.

But given the more complex algorithms used to scan books, merge two pdf pages into one page macthe process will be more complex than a single scan. So everyone prepared this article, a simple demonstration of how to quickly scan a book through a mobile phone.

Step 1: Open Scan-scan-surface book.

Step 2: The software will automatically identify the left and right contours of the system page-click the button to take a photo.

Step 3: the software automatically generates four pages with up and down edges-adjust the edges by clicking

Step 4: Finish and continue scanning the next page!

Then generate pdf files or text recognition as needed.

Character recognition

Generate PDF

However, although this application will do most of the work for us, we need to pay attention to some warnings. Pay attention to these points, and you can scan books quickly and well.

The distance between the mobile phone camera and scanning technical documents is moderate.

The camera is too far away from the book to recognize which page it is scanning. The camera is too close, and the edge of the book is not on the picture, so it is naturally unrecognizable. Here are two wrong examples.

Left: the camera is too close to the book. Panic: the camera is too close to the book.

Contrast the scanned file with the background color.

The software recognizes contours based on color differences, and if the colors are too close together, the contours will fail. For example, in the image below, Agee uses a very dramatic state to demonstrate that the software might default to using a range of white paper as the outline of a scanned document.

In addition, when the background is a stripe pattern, and scan technical document color difference is not big, also can appear the same situation, this is we can avoid in advance.

Try not to put anything in the scanning area.

In addition to the contrast between the scanned document and the background color, you also need to try to keep the scanning interface free of other sundries. The following is an exaggerated demonstration made by Aji, and the software can be confused. Oh, are you scanning a book, an earphone box or an A4 piece of paper?

Master the above Operation Skills and pay attention to three tips, you can quickly use the mobile phone scan good books!