Update app.py

app.py

@@ -43,7 +43,7 @@ def plot_outlines(img, masks):
     ax = fig.add_axes([0.0,0.0,1,1])
     ax.set_xlim([0,img.shape[1]])
     ax.set_ylim([0,img.shape[0]])
-    ax.imshow(img[::-1], origin='upper')
+    ax.imshow(img[::-1], origin='upper', aspect = 'auto')
     if outpix is not None:
         for o in outpix:
             ax.plot(o[:,0], img.shape[0]-o[:,1], color=[1,0,0], lw=1)