Update app.py

app.py

@@ -39,12 +39,16 @@ Always format your response exactly like this:
 def ocr_image(pil_image):
     try:
         w, h = pil_image.size
-        scale = max(1, 2000 // max(w, h))
+        scale = max(1, 3000 // max(w, h))
         img = pil_image.resize((w * scale, h * scale), Image.LANCZOS)
         img = img.convert("L")
-        img = ImageEnhance.Contrast(img).enhance(2.0)
+        img = ImageEnhance.Contrast(img).enhance(3.0)
+        img = ImageEnhance.Sharpness(img).enhance(2.0)
         img = img.filter(ImageFilter.SHARPEN)
-        text = pytesseract.image_to_string(img, config="--psm 6 --oem 3").strip()
+        text = pytesseract.image_to_string(
+            img,
+            config="--psm 6 --oem 3 -c tessedit_char_whitelist=0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.+=-/() "
+        ).strip()
         return text if len(text) > 10 else None
     except Exception:
         return None