Rapid autonomous calibration method suitable for portable camera

The invention discloses a rapid autonomous calibration method suitable for a portable camera, and the method comprises the steps: employing a portable camera comprising a camera module and an RTK positioning module, a control box connected with the camera, and a plurality of intelligent conical barrel roadblocks, and carrying out the calculation through a camera autonomous calibration algorithm integrated with an onboard control module of the control box, and obtaining the external parameters of the camera; an onboard control module of the control box integrates an image signal processing function, an image recognition algorithm, a camera self-calibration algorithm and a Bluetooth wireless communication function; the image signal processing function is used for receiving and processing image signals from a camera; the image recognition algorithm ensures that the positions of the intelligent conical barrel roadblocks in camera images are recognized, and image coordinates of all the roadblocks are obtained. Acc