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Wounded QR Codes

datagenetics.com

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21–30 of 52 posts

Re: Wounded QR Codes

#21

Post by mikeash »

Pxtl wrote: post #16

The bit at the end made me happy - I didn't know QR codes code be that large. I wonder what the practical maximum number of bits is? I just tried the ones on the Wikipedia page ( http://en.wikipedia.org/wiki/QR_code#Storage ) - the one that's 5 alignment blocks wide scans, but the one that's 7 alignment blocks wide does not. I assume my primitive old phone's camera lacks the resolution for it. Unfortunately the capti…

For what it's worth, the giant code scans fine for me using QR Reader on an iPhone 5S. Pretty amusing.

Re: Wounded QR Codes

#22

Post by TazeTSchnitzel »

Pxtl wrote: post #16

The bit at the end made me happy - I didn't know QR codes code be that large. I wonder what the practical maximum number of bits is? I just tried the ones on the Wikipedia page ( http://en.wikipedia.org/wiki/QR_code#Storage ) - the one that's 5 alignment blocks wide scans, but the one that's 7 alignment blocks wide does not. I assume my primitive old phone's camera lacks the resolution for it. Unfortunately the capti…

There's a 3DS game called Pullblox (or Pushmo), which allows you to make your own (low-res 2D bitmap) levels and then distribute them via a massive QR-code.

Re: Wounded QR Codes

#23

Post by JoshTriplett »

f2f wrote: post #2

literally prior art: http://research.swtch.com/qart and this one has the benefit of allowing you to make a qr code with your face on it :)

It also has the huge advantage of remaining valid, by sacrificing capacity rather than sacrificing redundancy.

Re: Wounded QR Codes

#24

Post by joshmn »

I was actually wondering the same exact thing for one of my clients. We are using QR codes (and their scans) to enable distribution of music for independent (unsigned) bands, while tracking who their new fans are, and how they're getting new fans. The core is a marketing/analytics tool/engine, but the front-facing product to the fan is a simple fangate.

Re: Wounded QR Codes

#25

Post by evilduck »

ck2 wrote: post #15

For companies that make "creative" QR codes, aren't they already giving up the 20% error correction?

It depends on how creative they get. If they're just rounding the corners on the squares to make it look more fluid, then it's definitely not a full 20% being used. If they're plopping a logo into the center of it, then it depends on how large the logo is proportional to the code's size.

Re: Wounded QR Codes

#26

Post by ryan-c »

dahart wrote: post #17
f2f wrote: post #2

literally prior art: http://research.swtch.com/qart and this one has the benefit of allowing you to make a qr code with your face on it :)

You can also embed higher-res images in QR codes without breaking them. http://cgv.cs.nthu.edu.tw/Projects/Recreational_Graphics/Hal...

Anyone know of a publicly available implementation of this?

Re: Wounded QR Codes

#27

Post by kalleboo »

examancer wrote: post #11

I was able to scan two "unscannable" codes: (5) "Even more reduced contrast", and (30) "Spray painted code" on my Moto X. Woot! What do I win?!

In addition to 5 and 30, 11 (the one with a gap) also scanned fine for me (using the SoftBank QR app)

Re: Wounded QR Codes

#29

Post by earlz »

Pxtl wrote: post #16

The bit at the end made me happy - I didn't know QR codes code be that large. I wonder what the practical maximum number of bits is? I just tried the ones on the Wikipedia page ( http://en.wikipedia.org/wiki/QR_code#Storage ) - the one that's 5 alignment blocks wide scans, but the one that's 7 alignment blocks wide does not. I assume my primitive old phone's camera lacks the resolution for it. Unfortunately the capti…

On my nexus 4 I managed to scan the giant QR code... except for it was read a serial code instead lol

Re: Wounded QR Codes

#30

Post by ronaldx »

Apart from all the other problems with QR codes, the tombstoning case (one of the failures here) is important in reality.

Without that, you have to awkwardly scan from exactly the correct direction.

The thing is, you surely could correct for that(?)

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