Upload utils.py

utils.py

@@ -0,0 +1,76 @@
+import torch
+import torch.nn as nn
+from enum import Enum
+
+import base64
+import json
+from io import BytesIO
+from PIL import Image
+import requests
+import re
+
+class ImageType(Enum):
+    REAL_UP_L = 0
+    REAL_UP_R = 1
+    REAL_DOWN_R = 2
+    REAL_DOWN_L = 3
+    FAKE = 4
+
+
+def crop_image_part(image: torch.Tensor,
+                    part: ImageType) -> torch.Tensor:
+    size = image.shape[2] // 2
+
+    if part == ImageType.REAL_UP_L:
+        return image[:, :, :size, :size]
+
+    elif part == ImageType.REAL_UP_R:
+        return image[:, :, :size, size:]
+
+    elif part == ImageType.REAL_DOWN_L:
+        return image[:, :, size:, :size]
+
+    elif part == ImageType.REAL_DOWN_R:
+        return image[:, :, size:, size:]
+
+    else:
+        raise ValueError('invalid part')
+
+
+def init_weights(module: nn.Module):
+    if isinstance(module, nn.Conv2d):
+        torch.nn.init.normal_(module.weight, 0.0, 0.02)
+
+    if isinstance(module, nn.BatchNorm2d):
+        torch.nn.init.normal_(module.weight, 1.0, 0.02)
+        module.bias.data.fill_(0)
+
+def load_image_from_local(image_path, image_resize=None):
+    image = Image.open(image_path)
+
+    if isinstance(image_resize, tuple):
+        image = image.resize(image_resize)
+    return image
+
+def load_image_from_url(image_url, rgba_mode=False, image_resize=None, default_image=None):
+    try:
+        image = Image.open(requests.get(image_url, stream=True).raw)
+
+        if rgba_mode:
+            image = image.convert("RGBA")
+
+        if isinstance(image_resize, tuple):
+            image = image.resize(image_resize)
+
+    except Exception as e:
+        image = None
+        if default_image:
+            image = load_image_from_local(default_image, image_resize=image_resize)
+
+    return image
+
+def image_to_base64(image_array):
+    buffered = BytesIO()
+    image_array.save(buffered, format="PNG")
+    image_b64 = base64.b64encode(buffered.getvalue()).decode("utf-8")
+    return f"data:image/png;base64, {image_b64}"