add face2paint

hubconf.py

 import torch
 
-def animegan2(pretrained=True, device="cpu", progress=True, check_hash=True):
+def generator(pretrained=True, device="cpu", progress=True, check_hash=True):
     release_url = "https://github.com/xhlulu/animegan2-pytorch/releases/download/weights"
     known = {
         name: f"{release_url}/{name}.pt"
@@ -32,3 +32,32 @@ def animegan2(pretrained=True, device="cpu", progress=True, check_hash=True):
         model.load_state_dict(state_dict)
 
     return model
+
+
+def face2paint(device="cpu"):
+    from PIL import Image
+    from torchvision.transforms.functional import to_tensor, to_pil_image
+
+    def face2paint(
+        model: torch.nn.Module,
+        img: Image.Image,
+        size: int,
+        side_by_side: bool = True,
+        device: str = device,
+    ) -> Image.Image:
+        w, h = img.size
+        s = min(w, h)
+        img = img.crop(((w - s) // 2, (h - s) // 2, (w + s) // 2, (h + s) // 2))
+        img = img.resize((size, size), Image.LANCZOS)
+
+        input = to_tensor(img).unsqueeze(0) * 2 - 1
+        output = model(input.to(device)).cpu()[0]
+
+        if side_by_side:
+            output = torch.cat([input[0], output], dim=2)
+
+        output = (output * 0.5 + 0.5).clip(0, 1)
+
+        return to_pil_image(output)
+
+    return face2paint