Frequently Asked Questions

What is Play The Page?

Play The Page is a computer vision technology created by a book publisher, with a very targeted application in mind – continuous recognition of printed materials (book pages, leaflets, cards etc.) in a camera video stream. This allows for seamless integration of print and multimedia, thus creating new and more engaged reader experience.

Play The Page uses machine learning and neural networks to deliver super‑accurate and blazing-fast image classification results. Thanks to its optimization, it works offline even on older and cheaper models of mobile devices.

How was Play The Page created?

Play The Page was developed by Yellow Dot in collaboration with Gdańsk University of Technology and their team of 7 machine learning experts – 3 computer science PhDs and 4 computer science Masters. The development phase lasted almost 2 years. The end results: the level of accuracy, reliability and ability to recognize images even at odd angles, surprised even the academic experts.

Is audio the only thing that can be added to a book?

No – not at all. What happens after the page is scanned by the reader is entirely up to the book publisher. It can be a video, a web page link, a slideshow, an interactive exercise, etc. Play The Page only acts as a super‑convenient link between a printed book and the media content.

So what type of applications can be created with it?

It is mainly intended to be used in mobile apps, alongside books or other printed materials.
Some use cases are:

  • a companion app for a children’s book that reads the scanned page out loud
  • a companion app for a textbook that allows the reader to view additional educational materials connected to a certain page (listening exercises, tests, answers, images, videos)
  • a companion app for a magazine or a tour guide that opens an URL after scanning an article or an add
  • an app for the visually impaired that helps them read the book
  • a companion app for a furniture catalogue that shows more pictures and links to the purchase web-page
  • a companion app for a board game
  • a museum app that plays an appropriate audio guide after scanning an exhibit

Can Play The Page be used to help the visually impaired or people with special needs?

Yes! The extreme ease of use (it was tested by 2-year-olds) and its reliability makes Play The Page a perfect solution to seamlessly add any type of reading aid to a book.

How fast and lightweight is it?

A file which allows to recognize each of 400 pages of a textbook weighs less than 3 megabytes.
It easily does 5 image classifications per second on a budget Android smartphone. On an older iPhone (e.g. iPhone 7), it easily does 20 classifications per second. Experiments proved that 2 classifications per second is sufficient for a smooth user experience.

What are Play The Page’s main advantages over other computer vision solutions?

  • It’s reliable, accurate and fast to react
  • It works at all angles and rotations
  • It works even in low light environment and with poor cameras
  • Most other computer vision solutions require high contrast images with big, distinguishable objects. Play The Page works on any type of images: text only book pages too!
  • It works offline, responding to user’s actions instantaneously and reducing the need to support or pay for complex server infrastructures
  • It was developed with a specific use-case in mind and for this use it is by far the most affordable solution available

Is Play The Page an augmented reality solution?

Although there are certain similarities, Play The Page is NOT an augmented reality solution. It surpasses any AR in the field of image recognition, but lacks the functionalities to place 3D objects on the printed markers.

So is Play The Page a type of QR code scanner?

Yes and no. Yes – because it provides similar possibilities as QR. No – because it does not need QR bars or any markers whatsoever. No changes need to be made to the image or text for the Play The Page to work. Thus, the technology can be used even for the already printed books or materials. QR stands for “quick response”. Think of Play The Page as QR scanner without the ugly QR codes.

Does it use OCR?

No. Play The Page does NOT use optical character recognition.

Does the Play The Page demo app use voice synthesizer?

No. The audio is prerecorded as mp3 files.

What platforms does it support?

End user application: Android 5.0 and above + iOS 9.3 and above. Windows Mobile is currently not supported.
App development: an SDK is provided as a Unity native plugin. SDKs for native Android and iOS development can also be provided.

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