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23 lines
No EOL
555 B
Elixir
23 lines
No EOL
555 B
Elixir
defmodule Philomena.Intensities do
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@doc """
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Gets the corner intensities of the given image file.
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The image file must be in the PNG or JPEG format.
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"""
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@spec file(String.t()) :: {:ok, map()} | :error
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def file(input) do
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System.cmd("image-intensities", [input])
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|> case do
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{output, 0} ->
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[nw, ne, sw, se] =
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output
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|> String.trim()
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|> String.split("\t")
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|> Enum.map(&String.to_float/1)
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{:ok, %{nw: nw, ne: ne, sw: sw, se: se}}
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_error ->
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:error
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end
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end
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end |