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using ImageIO
using Images
using SignedDistanceFields
using Plots
using Colors


    

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img = load("julia-logo-color.png")


    

    
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boolimg = map(pix-> iszero(pix), img);
contour(Float32.(boolimg), levels=1, line_z = 0.5,linewidth=2)


    

    
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Gray.(boolimg)


    

    
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sdfimg = sdf(boolimg);
contour(sdfimg)


    

    
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minv,maxv = extrema(sdfimg)
rng = maxv-minv


    

    
Out[6]:





83.68368041838224

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map(v -> RGB(ntuple(_->(v-minv)/rng,3)...), sdfimg)


    

    
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edfimg = edf(boolimg);
contour(edfimg)


    

    
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In [9]:

    

minv,maxv = extrema(edfimg)
rng = maxv-minv


    

    
Out[9]:





17.88854381999832

In [10]:

    

map(v -> RGB(ntuple(_->(v-minv)/rng,3)...), edfimg)


    

    
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