form uint32 to int32

app.py

@@ -147,17 +147,21 @@ def encrypt(user_id, input_image):
     if input_image is None:
         raise gr.Error("Please choose an image first.")
 
+
+    import numpy as np
+    # Resize image if necessary
     if input_image.shape != (224, 224, 3):
         input_image_pil = Image.fromarray(input_image)
         input_image_pil = input_image_pil.resize((224, 224))
-        input_image = numpy.array(input_image_pil)
+        input_image = np.array(input_image_pil)
 
     # Convert to grayscale and reshape to (1, 1, 224, 224)
-    input_image = numpy.mean(input_image, axis=2).astype(numpy.int32)
+    input_image = np.mean(input_image, axis=2).astype(np.float32)
     input_image = input_image.reshape(1, 1, 224, 224)
 
-    # Scale values to 12-bit range (0-4095)
-    input_image = (input_image / 255.0 * 4095).astype(numpy.int32)
+    # Scale values to 12-bit range (-2048 to 2047)
+    input_image = (input_image / 255.0 * 4095 - 2048).astype(np.int16)
+    input_image = np.clip(input_image, -2048, 2047)
 
     # Retrieve the client API
     client = get_client(user_id)