Pantograph slide plate unparallelism detection method

The invention relates to the technical field of pantograph anomaly detection, and discloses a pantograph slide plate unparallelism detection method. The method comprises the following steps: inputtingdifferent types of pantograph images in real time; performing filtering and denoising processing on the pantograph image through a Gaussian smoothing method; removing contour interference in the vertical direction through gradient calculation, conducting morphological processing and texture feature calculation, and extracting a pantograph image contour; screening out interference straight lines,carrying out straight line clustering judgment, and extracting a pantograph pan image; acquiring spatial geometrical characteristics of the skateboard according to the pantograph skateboard image, andjudging the abnormal state of the skateboard. The technical scheme is insensitive to a light source and is suitable for different illumination conditions; algorithm parameters are convenient to modify and can also be operated