A Bidirectional Flow Joint Sobolev Gradient for Image Interpolation

Figure 4

Flower1 image reduced and expanded by 2×2. Top row: original, NEDI, LSS. Bottom row: FBF (𝑘=500,𝛼=0.01,𝛽=0.05,𝑙₁=5×10⁻⁵,𝑙₂=2×10⁻⁵); BG (𝜆=0.5,𝐾=0.2); proposed (𝑘=70,𝜆=25,𝛼=5,𝛽=3).

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