Research Article
An Efficient and Self-Adapted Approach to the Sharpening of Color Images
Table 1
Comparisons of the sharpened images with respect to original images in terms of PSNR.
| Image | Dimension | Edge sharpening images | (a) HVD without LPF | (a) HVD with | | | | | | | |
| House | 512 × 512 | 68.63 | 59.06 | 54.59 | 69.12 | 59.55 | 55.08 | 39 | F-16 | 512 × 512 | 79.55 | 69.90 | 65.42 | 80.43 | 70.78 | 66.30 | 38 | Peppers | 512 × 512 | 86.41 | 77.02 | 72.58 | 88.84 | 79.49 | 75.06 | 41 | Woodland Hills, CA | 512 × 512 | 62.27 | 52.75 | 48.32 | 62.90 | 53.38 | 48.95 | 41 | Lena | 512 × 512 | 85.90 | 76.41 | 72.00 | 86.73 | 77.26 | 72.84 | 36 | Sailboat on lake | 512 × 512 | 73.09 | 63.48 | 59.00 | 73.91 | 64.30 | 59.82 | 36 | Baboon | 512 × 512 | 66.30 | 56.72 | 52.21 | 66.66 | 57.07 | 52.56 | 39 | Foster City, CA | 512 × 512 | 79.15 | 69.46 | 64.96 | 80.74 | 71.08 | 66.59 | 32 | Tiffany | 512 × 512 | 77.31 | 68.98 | 65.16 | 78.32 | 70.01 | 66.19 | 58 | Neck | 504 × 700 | 88.76 | 78.60 | 73.93 | 91.03 | 80.88 | 76.21 | 20 | Moon surface | 256 × 256 | 76.04 | 66.40 | 61.87 | 78.46 | 68.83 | 64.30 | 31 | Goldhill | 720 × 576 | 76.39 | 66.67 | 62.14 | 77.37 | 67.65 | 63.12 | 23 | Average | | 76.65 | 67.12 | 62.68 | 77.87 | 68.36 | 63.92 | 36 |
|
|
“” is scaling factor between 0 and 1. Low-pass filtering (LPF) and edge sharpening is for edge pixel only.
|