Automatic device and method for measuring crack changes through three-dimensional space reconstruction

The invention discloses an automatic device for measuring crack changes through three-dimensional space reconstruction. The automatic device comprises a measuring device and is characterized in that the device comprises motor equipment, a wheel disc, a telescopic sleeve and a fixed base, the motor equipment is connected with the wheel disc through a rotating wheel fixing clamp, and the upper end and the lower end of the telescopic sleeve are connected with the motor equipment and the fixed base through welding; and a camera and an annular light source are fixed on the wheel disc, and a corresponding mounting device and a power supply device are arranged. The invention discloses a method for measuring crack changes through three-dimensional space reconstruction. The method comprises the four steps of device setting, data acquisition, three-dimensional space reconstruction and calculation of image target related information. According to the invention, data acquisition is carried out through the camera, the wal