allow transparent input images

app.py

@@ -302,7 +302,7 @@ def _outpaint(img, tosize, border, seed, size, model):
 # %%
 
 
-searchimage = gc.Image(shape=(224, 224), label="image", type='pil')
+searchimage = gc.Image(shape=(224, 224), label="image", type='pil', image_mode='RGBA')
 to_size = gc.Slider(1, 1920, 512, step=1, label='output size')
 border = gc.Slider(
     1, 50, 0, step=1, label='border to crop from the image before outpainting')
@@ -310,7 +310,7 @@ seed = gc.Slider(1, 65536, 10, step=1, label='seed')
 size = gc.Slider(0, 1, .5, step=0.01,
                  label='scale of the image before outpainting')
 
-out = gc.Image(label="primed image with alpha channel", type='pil')
+out = gc.Image(label="primed image with alpha channel", type='pil', image_mode='RGBA')
 outwithoutalpha = gc.Image(
     label="primed image without alpha channel", type='pil')
 mask = gc.Image(label="outpainting mask", type='pil')