Made background transparent in generated mask

.gitignore

@@ -1 +1,3 @@
-__pycache__
+__pycache__
+*.diff
+.DS_Store

app.py

@@ -14,10 +14,11 @@ model = Model()
 
 
 def run(image_path, threshold):
-    image = np.asarray(Image.open(image_path).convert('RGB'))
+    image = Image.open(image_path).convert('RGBA')
+    canvas = Image.new('RGBA', image.size, (0, 0, 0, 0))
+
     # We copy the image that and fill it with black, to get the dimensions
-    rgb = np.copy(image)
-    rgb.fill(0)
+    rgb = np.array(canvas)
     masks = model(image_path, threshold, 1)
 
     mask = masks[0]
@@ -46,4 +47,5 @@ demo = gr.Interface(fn=run,
                     examples=[[path.as_posix(), 0.15] for path in paths],
                     title=TITLE,
                     description=DESCRIPTION)
-demo.queue().launch()
+demo.queue(concurrency_count=3, api_open=True)
+demo.launch()