FD²Foremer: Thinking Face Forgery Detection in Midfrequency Geometry Details

Figure 6

The diagram for computing simplified manifold loss. For the convenience of display, three feature maps are involved and each feature map is divided into four patches. (a) Cross-patch. (b) Cross-image. (c) Random-selected. (d) Patch embedding.

(a)

(b)

(c)

(d)