Calibration device, calibration field and calibration method

The invention relates to a calibration device, a calibration field and a calibration method. The calibration device comprises at least one first calibration area; the first calibration area comprises a plurality of first calibration blocks which are arranged at intervals, the vertexes of every two adjacent calibration blocks are connected, and a plurality of first calibration blocks of which the vertexes are sequentially connected in the preset direction are arranged in a manner of being in a trend from small to large on the whole. The calibration device can be suitable for calibration of the internal reference and/or the external reference of the camera, so that the image shot by the camera is displayed more clearly, the recognition rate of the calibration block of the image shot by the camera is improved, the calibration precision and accuracy are improved, the calibration speed of the internal reference and/or the external reference of the camera can be improved, and safe driving and convenient parking of