2018-11-06
Is it possible for Scanning Apps or Digital Camera to Replace Book Scanners?

The Differences between Scanning Apps and Book Scanners

In the nowadays Digital Age, people’s desire for information acquisition has substantially increased. The reading, which remains the major mean of learning, has derived a new reading approach–digital reading. It soon becomes a new trend due to its convenience and efficiency. Consequently, book scanners have come into being and is fast developing. But before we have some insight into book scanner, let’s discuss some replacement questions first, which is can scanning apps or digital camera replace book scanner?

The answer is of course NO.

  • Curved Surface
    Since the book’s surface is not flat, it is necessary to adjust the focal length to stay in focus. Although the book can be posed as V shape, a digicam can only take pictures of a flat document with clear and legible text.
  • OCR Function
    By far, OCR Function (Optical Character Recognition Technology) is not supported in digital camera and most of the scanning apps to convert the scanned documents into editable Word, PDF, TIFF, and Excel. Even now some apps can process the image and recognize the text, it has the risks that words are wrongly written or character missing.
  • Scan Quality
    There is no doubt that the resolution and sensor of mobile phones are not as professional as those of digicam and book scanner. Book scanner often adopts industrial-grade sensor and picture processor that will greatly improve scanning quality. Besides, with no algorithm to optimize the content, it will be an annoying process to deal with the disturbing factors like the uneven height of the book, the edge, the lighting, and paging.
  • Efficiency
    The efficiency of a book scanner is much better than apps and digicam. With fast processing CMOS chip, the scan speed of a flat single page can be as fast as 1.5s-3s/page and the speed of scanning books is 1.5s-3s/dual pages, far surpassing the speed of apps and digicam.

Other than these four reasons, there remains a lot of differences in specs and setup. Theoretically, if given the professional equipment, one may replace document scanner at the expense of time and constant setup. Just as smartphones cannot replace digital SLR camera, scanning apps can not replace professional book scanner.

Read More