An unmanned aerial vehicle take-off and landing platform capable of achieving visual positioning and an unmanned aerial vehicle drop point correction method

An unmanned aerial vehicle take-off and landing platform capable of achieving visual positioning comprises a take-off and landing platform body, an identification image is arranged on the top face ofthe take-off and landing platform body, and the identification image is composed of a plurality of concentric circles with different radiuses; The correction step comprises the steps that 1) the unmanned aerial vehicle lands on the take-off and landing platform main body; 2) a visual image isoutput by the airborne camera, operation is performed by utilizing pixel coordinates of a feature point P in the visual image to obtain an offset angle of the feature point P of the visual image relative to a central point O of the identification image; 3) the central point O of the identification image isrotated around the characteristic point P of the visual image to obtain O '; And 4) the relative position between the O'and the visual image feature point P is determined in the visual image, namelythe relative position betwe