Hinged engineering machinery, panoramic surround-view system and calibration method thereof

A panoramic surround-view system of a hinged engineering machinery, wherein the hinged engineering machinery comprises at least two hinged structure segments sequentially connected by means of a hinged frame, the at least two hinged structure segments comprising a first hinged structure segment, and the first hinged structure segment comprising a first vehicle body and a cab arranged on the first vehicle body, the panoramic surround-view system comprising:

• a plurality of photographing devices, mounted on the first hinged structure segment and configured to photograph the environment around the hinged engineering machinery;
• an image processing device, configured to receive images photographed by the plurality of photographing devices and form the images into a surround-view image around the entire first hinged structure segment;
• a human-computer interaction component, configured to display the surround-view image formed by the image processing device;
• and
• a plurality of calibration devices, arranged on a preset reference plane outside the first hinged structure segment and arranged around the outer periphery of the cab or the first hinged structure segment, respective top surfaces of the plurality of calibration devices being lower than mounting heights of the photographing devices at corresponding positions, and the plurality of calibration devices being configured to calibrate photographed images before the plurality of photographing devices are used.