Upload app_space.py

app_space.py

@@ -66,7 +66,11 @@ def plot_gating(signal_text: str):
     fig.savefig(buf, format="png", dpi=120)
     plt.close(fig)
     buf.seek(0)
-    return buf.read()
+    import numpy as np
+    import matplotlib.image as mpimg
+    buf.seek(0)
+    np_img = mpimg.imread(buf)
+    return np_img
 
 
 demo_normal = [0.05 for _ in range(256)]