• Re: printing QR-codes on labels with 300dpi label printers with LaTeX

    From Thomas Schmitt@21:1/5 to Max Nikulin on Tue Mar 19 20:00:01 2024
    Hi,

    Max Nikulin wrote:
    When vector graphics, that does not match device resolution, is rasterized, the result is either non-even sizes of similar elements or fuzzy lines due
    to dithering.

    Nitpicking:

    "Dithering" in raster graphics is emulation of color resolution at the
    expense of space resolution. Multiple coarsly colored pixels together
    create the impression of a finer color tone. A certain random aspect is
    added to prevent unwanted patters.
    https://en.wikipedia.org/wiki/Dither

    The fuzzy lines are rather the opposite. They use surplus color
    resolution to emulate ibetter spacial resolution. Over here the usual
    term is "Anti-aliasing".
    https://en.wikipedia.org/wiki/Line_drawing_algorithm
    https://www.geeksforgeeks.org/antialiasing/
    I get a suspiciously high share of german language results when
    searching this term in the web. But "Computer Grapics" by Foley, Van Dam, Feiner, Hughes of 1990 has a dozen occurences in its Index.


    Have a nice day :)

    Thomas

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  • From Thomas Schmitt@21:1/5 to Max Nikulin on Wed Mar 20 18:40:01 2024
    Hi,

    Max Nikulin wrote:
    I admit "dithering" may be incorrect term, [...]
    Consider 2 squares having size of 2.5×2.5 pixels. Non-even sizes and fuzzy lines variants:
    ███ ██
    ███ ███
    ███ █ ██
    ██ ██
    ██ ███
    Second variant might have sense if an image is treated as a photo unlikely having regular patterns with horizontal and vertical lines.

    I see ...
    The second rendering style is probably best described as "Bad Distortion".


    Have a nice day :)

    Thomas

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