Demo (https://jabcode.org/create/) worked on the first example I tried, then I tried using advanced settings and it threw an "Error Something went wrong" every time.
This was in Chrome.
JAB Code – A high-capacity 2D color bar code
11–20 of 183 posts
Re: JAB Code – A high-capacity 2D color bar code
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Re: JAB Code – A high-capacity 2D color bar code
#13In case anyone missed it, a very interesting link explaining how QR codes work was posted on HN a few days ago[1]. I wish there was some explanation like this on this JAB code and how exactly it gives high capacity over the b/w code. [1] https://www.nayuki.io/page/creating-a-qr-code-step-by-step
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Re: JAB Code – A high-capacity 2D color bar code
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Re: JAB Code – A high-capacity 2D color bar code
#15Every screen and printer will display/print colors differently. This is not a good idea.
Every HN comment thread is full of armchair critics. Maybe the designer actually thought of this!
If the colors are quantized into a constellation, even significant error could be corrected.
Re: JAB Code – A high-capacity 2D color bar code
#16Every screen and printer will display/print colors differently. This is not a good idea.
Depends on the chromatic differential it’s using, along with its error correction.
Re: JAB Code – A high-capacity 2D color bar code
#17Every screen and printer will display/print colors differently. This is not a good idea.
Yes but you don't need exact colors. Just a limited set of colors that can be matched up, especially after correcting for white balance.
Re: JAB Code – A high-capacity 2D color bar code
#18> master symbol and slave symbol
nooo
Re: JAB Code – A high-capacity 2D color bar code
#19Every screen and printer will display/print colors differently. This is not a good idea.
This would fail if the decoding algorithm was trying to match exact RGB or YUV values. But in reality, all it has to do is disambiguate 8 (in the case of the example) colors.
Re: JAB Code – A high-capacity 2D color bar code
#20Every screen and printer will display/print colors differently. This is not a good idea.
The full color palette is embedded in every code, so the reader need only compare a cell's color to the colors in the palette region.