Undo channelview command

New to Julia
1

I’m using Julia for a image processing program and I had to use the channelview command to acess the channels. But I’m wondering if there is any chance I can undo the command. What I want is J to be back to type Matrix{RGB{N0f8}}.
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J = channelview(img)
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2

Do you want Base.parent ?

julia> using ImageCore

julia> img = rand(RGB, 2,2)
2×2 Array{RGB{Float64},2} with eltype RGB{Float64}:
 RGB{Float64}(0.482138,0.987989,0.187547)  …  RGB{Float64}(0.670861,0.998297,0.294064)
 RGB{Float64}(0.238936,0.226647,0.553525)     RGB{Float64}(0.0945124,0.77229,0.942222)

julia> cv = channelview(img)
3×2×2 reinterpret(reshape, Float64, ::Array{RGB{Float64},2}) with eltype Float64:
[:, :, 1] =
 0.482138  0.238936
 0.987989  0.226647
 0.187547  0.553525

[:, :, 2] =
 0.670861  0.0945124
 0.998297  0.77229
 0.294064  0.942222

julia> parent(cv)
2×2 Array{RGB{Float64},2} with eltype RGB{Float64}:
 RGB{Float64}(0.482138,0.987989,0.187547)  …  RGB{Float64}(0.670861,0.998297,0.294064)
 RGB{Float64}(0.238936,0.226647,0.553525)     RGB{Float64}(0.0945124,0.77229,0.942222)