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QR code is inaccurate #23

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oleliabo opened this issue Feb 4, 2020 · 4 comments
Closed

QR code is inaccurate #23

oleliabo opened this issue Feb 4, 2020 · 4 comments

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@oleliabo
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oleliabo commented Feb 4, 2020

It is the 2D-barcode format "boxing" format that is used to code the digital data, see https://github.com/piql/boxing
Each pixel has 4 grey levels, storing 2 bits/pixel.
@marcauberer
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Otherwise we probably would have 400 film reels?!

@oleliabo
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oleliabo commented Feb 4, 2020

Otherwise we probably would have 400 film reels?!

yes, at least

@rezendi
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rezendi commented Feb 10, 2020

PiQL consistently refers to the data format as "QR codes" https://www.piql.com/future-proof-data-storage/ but this admittedly seems to be using the term more descriptively than prescriptively.

@oleliabo
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Yes QR code it used to explain the concept. Also note that the boxing format spec and decoder source code is stored on the reel to support future recovery.

@rezendi rezendi closed this as completed Aug 4, 2020
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@rezendi @oleliabo @marcauberer