Turnout switch machine gap detection method based on histogram and straight line fitting

• Main Authors: WU YUFENG, CAI LUTING, LI XIAOFENG, FU ZHIZHONG
• Format: Patent
• Language: Chinese; English
• Published: 15.05.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention discloses a turnout switch gap detection method based on histogram and straight line fitting. The method can be used for judging whether a notch exists or not before the notch of a turnout point switch is checked. After the gap image is shot by the point switch, whether the gap exists can be accurately judged by utilizing the related characteristics of the gap, and a reliability guarantee is provided for further gap detection. According to the method, a position-gray mapping curve is constructed according to a histogram, the rear half part of the mapping curve is fitted, and whether a notch exists or not is judged according to the fitted curve and the mapping curve. Related characteristics are extracted by utilizing the characteristics of the image, so that the method is highin adaptability and suitable for notch images under various conditions; judgment is carried out by utilizing a designed curve, implementation is easy, and the speed is high; whether the notch existsis judged according to the