Large-scale dynamic scene space-time coherent four-dimensional reconstruction method

• Main Authors: DONG YANG, GU LINYU, LI DONGZI, JI SONG, FAN DAZHAO, LEI RONG
• Format: Patent
• Language: Chinese; English
• Published: 12.01.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention belongs to the technical field of photogrammetry and remote sensing, and particularly relates to a large-scale dynamic scene space-time coherent four-dimensional reconstruction method. The method comprises the following steps: firstly, extracting feature points of each view angle video frame and key frames of each view angle video, and carrying out multi-view angle video inter-frame time synchronization according to an extraction result; and based on a time synchronization result, pose recovery of a multi-view camera, sparse three-dimensional point cloud generation, depth estimation of each view video frame, and fusion and updating of a static background model and a dynamic foreground model are carried out, so that precise large-scale dynamic scene space-time coherent four-dimensional reconstruction is realized. Moreover, the method only uses the collected multi-view video data, does not need the prior constraint condition or prior knowledge of a scene or a camera, achieves the large-scale dynam