Update app.py

app.py

@@ -53,9 +53,6 @@ def preprocess_image(img):
     img = ImageEnhance.Contrast(img).enhance(1.5)
     img = ImageEnhance.Sharpness(img).enhance(2.0)
     
-    # Convert to grayscale for better OCR performance
-    img = img.convert('L')
-    
     # Resize for optimal resolution (maintain aspect ratio)
     max_size = (1600, 1600)
     img.thumbnail(max_size, Image.LANCZOS)