Update app.py

app.py

@@ -3,6 +3,16 @@ from huggingface_hub import InferenceClient
 
 client = InferenceClient("models/microsoft/trocr-base-handwritten")
 
+def sepia(input_img):
+    sepia_filter = np.array([
+        [0.393, 0.769, 0.189],
+        [0.349, 0.686, 0.168],
+        [0.272, 0.534, 0.131]
+    ])
+    sepia_img = input_img.dot(sepia_filter.T)
+    sepia_img /= sepia_img.max()
+    return sepia_img
+
 demo = gr.Interface(sepia, gr.Image(), "image")
 
 if __name__ == "__main__":