Fig. 14
From: Multiview video plus depth transmission via virtual-view-assisted complementary down/upsampling
The pattern direction estimation results. a Original texture; the pattern direction estimation results on (b) original uncompressed texture, c compressed texture with QP = 34, and (d) compressed texture with QP = 40; the colors dark red, red, orange, yellow, and white represent vertical, 135° diagonal, horizontal, 45° diagonal, and undefined direction pixels, respectively. (For clearness, the directional estimation results on the discarded pixels are scaled up to the same size as the original texture; their real size is shown on the y-axis of each figure)