BlurHash: an image's placeholder as a short string,
20 to 30 characters, for a page to decode into a blur (blurhash on
npm, and ports in most languages). The same string as its reference
implementation, from the image's pixels: Storehouse.Analyzer.BlurHash
gives it from a stored file.
Summary
Functions
The BlurHash of an image of width × height pixels, given as RGB,
eight bits a band, row by row, with x × y components (1 to 9 each):
more is more detail, and a longer string. Most use 4 × 3.
Functions
@spec encode(pos_integer(), pos_integer(), binary(), 1..9, 1..9) :: String.t()
The BlurHash of an image of width × height pixels, given as RGB,
eight bits a band, row by row, with x × y components (1 to 9 each):
more is more detail, and a longer string. Most use 4 × 3.
iex> red = :binary.copy(<<255, 0, 0>>, 4)
iex> Storehouse.Image.BlurHash.encode(2, 2, red, 4, 3)
"L~TI:j|cfQ|c|c|cfQ|cfQfQfQfQ"