A Bidirectional Flow Joint Sobolev Gradient for Image Interpolation

Figure 2

Barbara (portion) expanded by 5×5. (a) LSS, (b) FBF (𝑘=5,𝛼=0.05,𝛽=0.05,𝑙₁=5×10⁻⁴,𝑙₂=2×10⁻⁴); (c) BG (𝜆=1,𝐾=1); (d) proposed (𝑘=1,𝜆=25,𝛼=10,𝛽=1.5).

(a)

(b)

(c)

(d)