Subway foundation pit overexcavation monitoring method based on binocular camera and computer vision

• Main Authors: LI XUELAI, LIU CHANGYONG, TANG YIDONG, FENG KAILUN, YAN HAOFENG
• Format: Patent
• Language: Chinese; English
• Published: 04.07.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses a subway foundation pit overexcavation monitoring method based on a binocular camera and computer vision, and belongs to the field of subway foundation pit overexcavation monitoring. The problems that overexcavation monitoring mostly depends on manpower, and the real-time performance is poor; the homogeneous soil body is difficult to distinguish multiple planes; the tolerance of a single measuring instrument is poor; the working surface is uneven and is difficult to represent the average height; and whether the steel support is erected in time cannot be monitored. The method comprises the following steps: collecting a two-dimensional image and a three-dimensional point cloud through a binocular camera, carrying out point cloud merging, and carrying out semantic segmentation through pre-training; after the ground plane is converted into a plane equation, different working planes are accurately segmented by dividing the distances from points in the soil body point cloud to the plane equa