Configure default arguments

app.py

@@ -41,8 +41,17 @@ def resize_image(input_path, output_path, target_height):
 
 
 @spaces.GPU(duration=90)
-def infer(image_in, prompt, negative_prompt, inference_steps, guidance_scale, control_weight, low_threshold, high_threshold, progress=gr.Progress(track_tqdm=True)):
-
+def infer(
+    image_in, 
+    prompt, 
+    negative_prompt="",
+    inference_steps=25,
+    guidance_scale=7.0,
+    control_weight=0.7,
+    low_threshold=100,
+    high_threshold=200,
+    progress=gr.Progress(track_tqdm=True)
+):
     # Canny preprocessing
     image_to_canny = load_image(image_in)
     image_to_canny = np.array(image_to_canny)
@@ -69,6 +78,7 @@ def infer(image_in, prompt, negative_prompt, inference_steps, guidance_scale, co
     return image, gr.update(value=image_to_canny, visible=True)
 
 
+
 css = """
 #col-container{
     margin: 0 auto;