grumpyfox96on Hacker News • Recommends
On “DIY Book Scanner”
There is this classic – very very impressive but to my knowledge not commercially available and probably never commercialized. 250 pages/min is astounding. link to this video
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#bookscanner#computervision#3dreconstruction
BFS-Auto: High Speed Book Scanner at over 250 pages/min
Ishikawa Group Laboratory
9K subscribers • 1 video on Hallway
- Recommended by 2 people: 2 on Hacker News.
- A classic. People kept recommending it from 2018 to 2024.
Intermediate. Assumes working knowledge.
1.3M views13 years ago2 recommendations
Graphics and audioHardwareComputer visionEmbedded systems
A demonstration of a high-speed book scanner that uses real-time 3D recognition to restore warped pages into flat images.
BFS-Auto can achieve high-speed and high-definition book digitization at over 250 pages/min using the original media format. This performance is realized by three key points: high-speed fully-automated page flipping, real-time 3D recognition of the flipped pages, and high-accuracy restoration to a flat document image. This system is toward the practical use in 2013. ishikawa-vision.org/vision/BFS-Auto/Why it's here
2 people recommend thisWhat people say. Linked as an impressive demonstration of high-speed automated book scanning and real-time page flattening technology.
ebcodeon Hacker News • Recommends
On “Simple Thought Experiment Shows Why We Need Quantum Gravity”
Do you happen to know if any of this mysterious researcher's papers might be on the arxiv? And have you looked into automated digitizing machines for your collection? The University of Tokyo seems to have a pretty good one: link to this video :)
tablespoonon Hacker News • Mentions
On “€2.6M spent for a book at auction, believed they would own the IP”
> Oddly enough - the process in a library for digitising a copy of a book can be fairly destructive, as far as I understood from those doing it (at CUDL). The spine is chopped off, to make it easier to put it into a machine for scanning all the pages. I don't think it necessarily has to be that way. I recall seeing a photo or video of a book-scanner that would project laser grid-lines onto the book, to non-destructively correct for the deformations caused by the binding in software. Edit: not sure if this is the one, but it shows the concept: link to this video
ortusduxon Hacker News • Mentions
On “There's Waldo is a robot that finds Waldo (2018) [video]”
I do enjoy the various methods of automatic page turning used by book scanning machines. None of them are simpler than a toy robot arm and a cheap USB webcam! - Flipping - link to this video - Arm with suction - link - Linear vacuum (google) - link - Vacuum prism scanner (40+ ppm!) - link