Figure 2
From top to bottom and left to right: the chessboard image decompressed by bi-linear, bi-cubic, bi-spline, Shepard (\(s=4\)), \(G_{M,N}^{2,4}\), \(G_{M,N}^{10,4}\), Shepard (\(s=6\)), \(G_{M,N}^{2,6}\) and \(G_{M,N}^{10,6}\) operators starting from the image compressed with ratio 25