Store data on paper with Twibright Optar
Store data on paper with Twibright Optar
Posted Jul 26, 2007 19:03 UTC (Thu) by eli (guest, #11265)Parent article: Store data on paper with Twibright Optar
This could be interesting as an element in posters, handouts, art, etc.
to embed a 'hidden' message. It would be particularly interesting to see
if one could embed the source materials of an image in the image as an
opttar fragment.
Hmmm.... Should we keep a printout of the optar source with the data?
Posted Jul 26, 2007 20:26 UTC (Thu)
by hein.zelle (guest, #33324)
[Link] (1 responses)
Posted Jul 29, 2007 9:05 UTC (Sun)
by AndyBurns (guest, #27521)
[Link]
Print the source of a C compiler too, oh I spot a flaw ...
Posted Jul 26, 2007 22:51 UTC (Thu)
by elicriffield (guest, #33738)
[Link] (3 responses)
I don't know about the color requirements but seems like you could make pictures that don't look to abnormal, maybe more like a painting that would have 100k of data in them.
It'd be a neat trick for an album cover.
Eli Criffield
Posted Jul 26, 2007 23:24 UTC (Thu)
by eli (guest, #11265)
[Link]
Heh, so did I. ;)
Posted Jul 29, 2007 9:07 UTC (Sun)
by man_ls (guest, #15091)
[Link]
I don't think you could create an auto-encoding image: one which when decoded yields the same image, but it's an interesting problem to be sure.
Posted Aug 4, 2007 13:29 UTC (Sat)
by pimlottc (guest, #44833)
[Link]
PARC has a (non-free) 2D barcode system called Dataglyphs, composed of patterns of simple fore- and back-slashes, which can be used as halftone dots, changing their thickness, lengths and colors as needed to render an image. It's very nice and unobtrusive, especially at high resolution. There's a bunch of example images on their webpage and even an interactive demo page where you can encode and decode your own test images. The density is not as good - 1 KB/inch^2 @ 600 dpi (comes to 96KB for an A4 page) - but the simplicity of the patterns makes it fade easily into the background and allows for a good amount of alteration for aesthetic purposes which still being machine-recognizable.
Printing the source on the back of the paper might not be a bad idea :-) (in ascii form, notably)Store data on paper with Twibright Optar
For archiving and notary purposes it'd sure be handy to know afterward how to decode the data.
> Printing the source on the back of the paper might not be a bad idea :-) (in ascii form, notably)Store data on paper with Twibright Optar
>
> For archiving and notary purposes it'd sure be handy to know afterward how to decode the data.
Hey i thought i was eli.....Store data on paper with Twibright Optar
Store data on paper with Twibright Optar
Hey i thought i was eli.....
Heh! You could even encode an image in an otherwise normal album cover, and in the encoded image (e.g. a PNG) you could also encode another image. Ad nauseam...
Store data on paper with Twibright Optar
Store data on paper with Twibright Optar