Quote:
Originally Posted by stumped
It's less trivial for a book. You need to automate page turns. Then record as video , then isolate frames and convert to images, then turn images into a book...
I read a spy story recently where videos was used to steal documents by fast scrolling a screen and video recording it . That was fiction but seemed plausible
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It's been done with a lego device, but you don't need lego. You don't want video. All decent cameras and most decent phones have a remote "shutter" feature. You have something to repeatedly turn page (off the shelf ones exist for BT or touch screens or buttons). A monostable delay ($1 555 timer IC) fires the camera; that has delay for the page refresh which is set to every page. Or use this Cable release
https://www.amazon.de/-/en/gp/product/B01KVE777S. The cable is just contacts that close, so that can also feed the page turning device, which will turn page after each shot is taken.
Then the folder of auto-incremented number images is processed with common OCR tools, though pirates sometimes just made a PDF and even sold it on Google Play Store. Pirate copies were so rife on Google Books that they closed it for new accounts for a while. However the industrial pirates often use a paper copy; cut spine off and use a sheet feeder.
The spy video thing can be done in real life, but it's when you are in a hurry. The post processing back or review back at base is time consuming. You aren't going to be interrupted by security.