A Bidirectional Flow Joint Sobolev Gradient for Image Interpolation

Figure 1

Koala image expanded by 1.5×1.5. (a) LSS, (b) FBF (𝑘=500,𝛼=0.04,𝛽=0.01,𝑙₁=0.005,𝑙₂=2×10⁻⁴); (c) BG (𝜆=0.3,𝐾=1); (d) proposed (𝑘=100,𝜆=45,𝛼=5,𝛽=0.5).

(a)

(b)

(c)

(d)