Target depth and height measuring method and device based on monocular camera

• Main Authors: MAO JIAFA, PAN HANYU, LI YANYAN, LANG JIAJIN, HU YAHONG
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention discloses a target depth and height measurement method and device based on a monocular camera, and the method comprises the steps: adjusting the monocular camera, enabling a target to be imaged at two sides of a vertical midperpendicular of an imaging plane of the monocular camera, so that the target to be imaged below a transverse midperpendicular of the imaging plane, shooting the target, and obtaining a target image; marking a target bottom point C and a corresponding vertex D in a target image, obtaining pixel coordinates of the bottom point C and the vertex D, converting the pixel coordinates of the bottom point C and the vertex D into image coordinates, calculating parameters required by measurement through an image coordinate system, then keeping the state of a monocular camera unchanged, rotating a lens of the monocular camera to obtain different target images, and measuring to obtain a target distance and a target height. The technical scheme of the invention not only has low requiremen