Fig. 10
From: DIBR-synthesized image quality assessment based on morphological multi-scale approach
The even step of 2D non-separable wavelet decomposition using the min-lifting scheme. In the upper row, the signal on the quincinx lattice is split in two signals, white x and gray y, both on Cartesian lattice; In the bottom row on the left, the pixel of the detail signal d is calculated in prediction step from the four neighbor signal pixels from the diagonal directions; In the bottom row on the right, the pixel of the lower resolution signal s is calculated in update step from the four neighbor detail pixels from the diagonal directions