31 lines
828 B
Julia
31 lines
828 B
Julia
using LinearAlgebra, Plots, Statistics
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include("../11-03/readyalefaces_to_tensor.jl")
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function interactiverec(F, iterstop::Union{Nothing, Integer}=nothing)
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# given a 243x320 image F, displays it as sum of components
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stdsize = (243, 320)
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(X, _) = readyalefaces_to_tensor()
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X = reshape(X, (prod(stdsize), Integer(prod(size(X)) / prod(stdsize))))
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avg = mean(X, dims=2)
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Xs = X .- avg
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(U,S,V) = svd(X)
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h = Plots.heatmap(reshape(avg, stdsize), yflip=true)
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display(h)
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if iterstop == nothing
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upto = size(U, 2)
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else
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upto = min(size(U, 2), iterstop)
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end
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# no fancy slider, not enough time
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for d ∈ 0:upto
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h = heatmap(reshape(avg .+ U[:, 1:d] * U[:, 1:d]' * F, stdsize), yflip=true)
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IJulia.clear_output(true)
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display(h)
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end
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end |