Update app.py

app.py

@@ -1,5 +1,6 @@
 import gradio 
 import cv2
+import numpy as np
 
 #def inference(img, in_bright):
 #    new_img = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
@@ -23,6 +24,7 @@ def greet(image, name, is_morning, temperature):
     greeting = f"{salutation} {name}. It is {temperature} degrees today"
     celsius = (temperature - 32) * 5 / 9
 
+    new_image = np.zeros(image.shape, image.dtype)
     # contrast [1.0-3.0]
     # brightness [0-100]
     # https://docs.opencv.org/4.x/d3/dc1/tutorial_basic_linear_transform.html