Self-adaptive calibration device for engineering surveying and mapping

The utility model discloses a self-adaptive calibration device for engineering surveying and mapping, which comprises a calibration plate, a universal gradienter and an adjusting mechanism, and is characterized in that the calibration plate is formed by splicing block structures, and a color dot matrix and a checkerboard are arranged on the calibration plate; the color dot matrix is in a nested design and comprises at least two colors; the adjusting mechanism can adjust the position and the surface level of the calibration plate in the vertical direction. The calibration device is matched with a computer algorithm to calculate the image distortion rate and determine whether the image shot by the unmanned aerial vehicle is corrected or not, a reference circle of a reference dot matrix can be adaptively selected according to the height of the unmanned aerial vehicle, the height of the unmanned aerial vehicle and the motion attitude in a three-dimensional space are obtained, and the practicability is high; the f