Figure 4.
Sample source images from the given datasets (Data-1 through Data-6), where (a,b) ∈ Data-1, (c,d) ∈ Data-2, (e,f) ∈ Data-3, (g,h) ∈ Data-4, (i,j) ∈ Data-5, and (k,l) ∈ Data-6.
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