Update utils.py

utils.py

@@ -2,7 +2,7 @@ import cv2
 import numpy as np
 from PIL import Image, PngImagePlugin
 
-def test_roundtrip_text(im_name,extra):
+def png_encode(im_name,extra):
         # Check text roundtripping
 
         im = Image.open(im_name)
@@ -10,7 +10,7 @@ def test_roundtrip_text(im_name,extra):
         info = PngImagePlugin.PngInfo()
         info.add_text("TXT", extra)
         im.save("test","png",pnginfo=info)
-
+        return("test.png","")
 
 
 def to_bin(data):