resolve threads

dan/predict/prediction.py

@@ -299,13 +299,13 @@ def run(
     dan_model = DAN(device, temperature)
     dan_model.load(model, parameters, charset, mode="eval")
 
-    im = read_image(image, scale=scale)
-
     # Load image and pre-process it
     if image_max_width:
-        h, w, c = read_image(image, scale=1).shape
+        _, w, _ = read_image(image, scale=1).shape
         ratio = image_max_width / w
         im = read_image(image, ratio)
+    else:
+        im = read_image(image, scale=scale)
 
     logger.info("Image loaded.")
     im_p = dan_model.preprocess(im)