annotator/util

annotator/util.py

@@ -0,0 +1,48 @@
+import numpy as np
+import cv2
+import os
+
+
+annotator_ckpts_path = os.path.join(os.path.dirname(__file__), 'ckpts')
+
+
+def HWC3(x):
+    assert x.dtype == np.uint8
+    if x.ndim == 2:
+        x = x[:, :, None]
+    assert x.ndim == 3
+    H, W, C = x.shape
+    assert C == 1 or C == 3 or C == 4
+    if C == 3:
+        return x
+    if C == 1:
+        return np.concatenate([x, x, x], axis=2)
+    if C == 4:
+        color = x[:, :, 0:3].astype(np.float32)
+        alpha = x[:, :, 3:4].astype(np.float32) / 255.0
+        y = color * alpha + 255.0 * (1.0 - alpha)
+        y = y.clip(0, 255).astype(np.uint8)
+        return y
+
+
+def resize_image(input_image, resolution):
+    H, W, C = input_image.shape
+    # H, W 중 짧은 쪽을 resolution과 맞춤
+
+    if H > W:
+        k = resolution / W
+        W = resolution
+        H = int(H * k)
+    else:
+        k = resolution / H
+        H = resolution
+        W = int(W * k)
+
+    input_image = cv2.resize(input_image, (W, H), interpolation=cv2.INTER_CUBIC)
+
+    # resolution으로 center crop
+    start_w = (W - resolution) // 2
+    start_h = (H - resolution) // 2
+    img = input_image[start_h:start_h + resolution, start_w:start_w + resolution]
+
+    return img