process video

detector/utils.py

@@ -43,6 +43,7 @@ def detect_chars(img):
     img = cv2.resize(img, (640, 320))
     detect = model_chars(img)
     records = detect.pandas().xyxy[0].to_dict(orient='records')
+    records = filter(lambda d: d['confidence'] > 0.7, records)
     text = ''
     if records:
         records = sorted(records, key=lambda d: d['xmin'])