diff --git a/pinPicture.py b/pinPicture.py
index dc597da..fc16455 100644
--- a/pinPicture.py
+++ b/pinPicture.py
@@ -10,6 +10,7 @@ import easyocr
 class PinPicture(tk.Frame):
     def __init__(self, image, master=None):
         super().__init__(master)
+        self.reader = None
         self.detectBtn = None
         self.pinBtn = None
         self.lineBtn = None
@@ -296,8 +297,9 @@ class PinPicture(tk.Frame):
             self.drawPad = ImageDraw.Draw(self.pad)
 
     def detect(self):
-        reader = easyocr.Reader(['ch_sim', 'en'])
-        result = reader.readtext(np.array(self.image), detail=0)
+        if self.reader is None:
+            self.reader = easyocr.Reader(['ch_sim', 'en'])
+        result = self.reader.readtext(np.array(self.image), detail=0)
         text = ''
         for str in result:
             text += str