Multi-depth ultrasonic probe calibration method, device and system

The embodiment of the invention provides a multi-depth ultrasonic probe calibration method, device and system, and the method is characterized in that the method comprises the following steps: responding to the start of operation of an ultrasonic probe, obtaining a first preset number of calibration phantom images in a preset depth range through the ultrasonic probe, the ultrasonic probe being fixed to a calibration phantom, and the calibration phantom images being a first preset number; the calibration phantom is an N-shaped calibration phantom; extracting a feature point coordinate of the calibration phantom image; and calculating corresponding three-dimensional physical coordinates according to the coordinates of the feature points. By adopting the method provided by the embodiment of the invention, the model can be debugged and optimized by using the calibration phantom image under different depth conditions, so that a more accurate ultrasonic calibration result is obtained, and medical staff can more acc