Testimage camera.ppm

camera.jl

using Images
# CC0 license: https://commons.wikimedia.org/wiki/File:Wikicommons_kamera_rollei35_rrt877.jpg
file = download("https://upload.wikimedia.org/wikipedia/commons/thumb/3/38/Wikicommons_kamera_rollei35_rrt877.jpg/640px-Wikicommons_kamera_rollei35_rrt877.jpg")
img = load(file)
open("camera.ppm", "w+") do io
     println(io, "P6")
     println(io, size(img, 2), " ",  size(img, 1))
     println(io, 255)

     for row in eachrow(img)
         for px in row
             write(io, px.r.i)
             write(io, px.g.i)
             write(io, px.b.i)
         end
     end
 end

camera.ppm