Panoramic video three-dimensional point cloud sparse reconstruction method and device integrating key frame screening

Through the integrated keyframe filtering method, dynamically adjust the frame extraction interval and select keyframes for three-dimensional point cloud reconstruction of panoramic video, solving the problems of large amount of computing and trajectory traceability, improving the reconstruction efficiency and quality, and enhancing the adaptability of dynamic scenes.

CN120451387APending Publication Date: 2025-08-08TIANJIN FIRE SCI & TECH RES INST OF MEM
0 Cites 5 Cited by

Patent Information

Application Number
CN202510520813.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-24
Publication Date
2025-08-08

AI Technical Summary

Technical Problem

The prior art has a large amount of computation and low reconstruction efficiency in panoramic video three-dimensional point cloud reconstruction, and traditional methods cannot trace the video shooting trajectory and ignore key details of dynamic changes.

Method used

Through the integrated keyframe filtering method, panoramic video is obtained and video quality evaluation is performed, the frame extraction interval is dynamically adjusted, the keyframe is selected for downsampling and point cloud reconstruction, and the frame extraction interval is optimized based on interframe changes and visual perspective influence parameters.

Benefits of technology

The efficiency and quality of three-dimensional point cloud reconstruction is improved, the adaptability to dynamic scenes is enhanced, key details are not lost, the reconstruction process is optimized, and the camera trajectory information is provided.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a panoramic video three-dimensional point cloud sparse reconstruction method and device integrated with key frame screening, and the method comprises the steps: obtaining a panoramic video of a target scene, and carrying out the video quality evaluation of the panoramic video, and obtaining a video evaluation result; determining a target resolution of downsampling according to the video evaluation result; carrying out downsampling processing on the panoramic video based on the target resolution to obtain a downsampled second video; for the second video, dynamically adjusting a frame extraction interval based on a preset key frame selection mechanism, and extracting a frame index of the key frame from the second video according to the frame extraction interval to obtain a plurality of frame indexes; and obtaining a plurality of corresponding key frames in the panoramic video based on the plurality of frame indexes, and obtaining the three-dimensional scene sparse point cloud of the target scene based on the plurality of key frames, thereby solving the technical problem of low processing efficiency in the prior art.
Need to check novelty before this filing date? Find Prior Art