Update app.py

app.py

@@ -125,24 +125,9 @@ def extract_canny(input_image):
 
 
 def convert_to_grayscale(image):
-    image = convert_from_image_to_cv2(image)
-    gray_image = convert_from_cv2_to_image(cv2.cvtColor(image, cv2.COLOR_BGR2GRAY))
+    gray_image = image.convert('L').convert('RGB')
     return gray_image
 
-def tile_old(input_image, resolution=768):
-    input_image = convert_from_image_to_cv2(input_image)
-    H, W, C = input_image.shape
-    H = float(H)
-    W = float(W)
-    k = float(resolution) / min(H, W)
-    H *= k
-    W *= k
-    H = int(np.round(H / 16.0)) * 16
-    W = int(np.round(W / 16.0)) * 16
-    img = cv2.resize(input_image, (W, H), interpolation=cv2.INTER_LANCZOS4 if k > 1 else cv2.INTER_AREA)
-    img = convert_from_cv2_to_image(img)
-    return img
-
 def tile(downscale_factor, input_image):
     control_image = input_image.resize((input_image.size[0] // downscale_factor, input_image.size[1] // downscale_factor)).resize(input_image.size, Image.NEAREST)
     return control_image