Figure 16
From: Adaptive example-based super-resolution using kernel PCA with a novel classification approach
HR image reconstructed by the previously reported methods and the proposed method from the LR images obtained by the Haar and Daubechies filters (Test image "Lena"). HR image reconstructed from the LR image obtained by using the Haar filter by (a) reference [11] (SSIM index: 0.7941), (b) reference [27] (SSIM index: 0.8235), (c) reference [8] (SSIM index: 0.8159), (d) reference [12] (SSIM index: 0.8428), (e) reference [28] (SSIM index: 0.8337), and (f) the proposed method (SSIM index: 0.8542). HR image reconstructed from the LR image obtained by using the Daubechies filter by (g) reference [11] (SSIM index: 0.7950), (h) reference [27] (SSIM index: 0.8455), (i) reference [8] (SSIM index: 0.8148), (j) reference [12] (SSIM index: 0.8458), (k) reference [28] (SSIM index: 0.8320), and (l) the proposed method (SSIM index: 0.8508).