Asciify is an ASCII art library written in Go. It has no external dependencies and is fairly customizable.
You can use it to convert images to ASCII art (and back to an image again, if you really want to).
go get github.com/tjhorner/asciifyPass in an image.Image to Asciify and it will do the thing.
// Pretend we have `img` defined somewhere
result := asciify.Asciify(img, asciify.DefaultCharacterPalette)
// `result` is of type `ASCIIArt`, which you can use like a `[][]string`
char := result[0][5]
// Or if you want the art as a single string, use the String() convenience method
fmt.Println(result.String())Result
`-vUx/(|fvC1"
:l^-J/{]????[}{|Y[)r~.
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You can also use custom character palettes if you want. The default palette is suitable for most cases, but you might want to use different characters for different scenarios.
To do so, just make a CharacterPalette with the characters you'd like to appear in the output, ordered from darkest to lightest.
The default palette comes from here.
// Let's use a custom palette
palette := asciify.CharacterPalette{"A", "B", "C", "1", "2", "3"}
result := asciify.Asciify(img, palette)
fmt.Println(result.String())Result
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
If you have some ASCII art and know the palette that was used to create it, you can also turn it back into an image.
This is pretty much just for fun and shouldn't ever be used in any serious way, as the resulting image will be extremely lossy (depending on your palette) and in grayscale.
// Turn an image into ASCII art
result := asciify.Asciify(img, asciify.DefaultCharacterPalette)
// Then re-imagify it
imagified, _ := asciify.Imagify(result, asciify.DefaultCharacterPalette)Result
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No, as that is outside the scope of this project. Since asciify takes in an image.Image, it's compatible with the rest of the Go ecosystem, so you could use a library like this to do the resizing before you asciify the image: https://github.com/nfnt/resize
Probably. My excuse is that someone somewhere might want to use multiple characters to represent a pixel.
Copyright 2020 TJ Horner
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