fix render factor default type

app.py

@@ -51,7 +51,7 @@ def colorizer_fn(input_img, render_factor):
     if input_img is not None and input_img != '':
         output_img = _colorizer.get_transformed_image(
             path=input_img,
-            render_factor=int(render_factor),
+            render_factor=render_factor,
             watermarked=watermarked,
             post_process=True,
         )
@@ -66,7 +66,7 @@ examples = [["./demo.jpg"],]
 
 demo = gr.Interface(
     fn=colorizer_fn,
-    inputs=[gr.Image(type="filepath", label="Old image"), gr.Slider(0, 40, label="Render Factor", value=10)],
+    inputs=[gr.Image(type="filepath", label="Old image"), gr.Slider(minimum=0, maximum=40, step=1, label="Render Factor", value=10)],
     outputs=ImageSlider(type="pil", label="Old vs Colored image"),
     examples=examples,
     title=title,