21 replies to this topic

[gamax92]

Have you ever seen one of those funky QR barcode have some kinda logo painted over or attached to it?

<!-- m -->http://qreateandtrac... ... a-qr-code/<!-- m -->

QR Codes supposedly were designed that 30% of the data could be missing, and the barcode could still function.

Ive only seen three types of QR codes.

1) A logo attached to the top left of a QR code.
2) A logo embeded in the center of the QR code.
3) A logo overlayed on top QR code.

Heres a online decoder that you can use to decode the QR codes!
<!-- m -->http://zxing.org/w/decode.jspx<!-- m -->

[0x150--ISO]

I have a QR code generator running on my server in PHP.
<!-- m -->http://sourceforge.n...jects/phpqrcode<!-- m -->

Its opensource so you can mess with the code to make it do what you want.

[gamax92]

I managed to get this working.


Also, this works.

[0x150--ISO]

Nice! Did you implement this into a qr code app somewhere? Or just added the image manually.
Would be nice to have for custom branding.

[gamax92]

I manually put in the QR image, and manually destroyed the other.

Though i could probably write a program to help ease code destruction/image placement.

EDIT: I used this site to create the codes. <!-- m -->http://www.racoindus... ... -code.aspx<!-- m -->
They have a variety of options for making the codes, such as error correction level, qr code version, encoding method, and image format.

EDIT: A QR code destroyer has been created, I would release it but the program i use is under the LGPL license, and i dont know what license ImageMagick is under.

[0x150--ISO]

PHP has the built in ability to draw PNG images ( used in captcha images etc ).
If you knew the exact percent or specific coordinates of the code that can be "redrawn",
I'd definitely take a look @ the code for the one I have running on my server.

[gamax92]

Woah, Images in QR codes that dont actually destroy data?
<!-- m -->http://hackaday.com/... ... a-qr-code/<!-- m -->



The site to make these is at <!-- m -->http://research.swtch.com/qr/draw<!-- m -->

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Algos for embedding artwork have been around for a decade in japan.

[gamax92]

Really? Can you post a link to some of the other QArt code makers?

[0x150--ISO]

wait you know what a decade is right :roll:
Ive played with many iterations over the years so its ooooooooolllllllddd news lol smh

[TLM]

plus I already posted here:

[sumon]

For artistic purposes, I like using non-black-and-white colors. Altering colors is also possible, as long as the contrast is good enough.

[0x150--ISO]

Primary colors fare well but good idea sumon
I'm going to try 16bit

edit:
Rock 4bit and you get half a byte on single framed gifs.
1 byte per frame in tweens.
pretty small footprint

[0x150--ISO]

These sizes are so small you could rock a bitmap movie inside of them lol
Gotta install this in my Google apps.

[sumon]

Primary colors fare well but good idea sumon
I'm going to try 16bit

edit:
Rock 4bit and you get half a byte on single framed gifs.
1 byte per frame in tweens.
pretty small footprint

<!-- m -->http://mashable.com/... ... 91315-TIME<!-- m -->

Some pretty awesome examples. Of course I understand those can't be generated from your PHP script, sadly

I'll also add that I'm a QR-phreak. I think "links" in real life is an awesome concept.