一种基于光流修复的半监督航拍视频去厚云方法

By employing semi-supervised segmentation and optical flow inpainting, the problem of insufficient utilization of spatial and temporal correlations in aerial video declouding was solved, enabling automated declouding processing of large-scale aerial images. The output declouding results are stable, smooth, and reliable.

CN115908770BActive Publication Date: 2026-07-17CHINESE PEOPLES LIBERATION ARMY ARMY ARTILLERY & AIR DEFENSE ACAD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINESE PEOPLES LIBERATION ARMY ARMY ARTILLERY & AIR DEFENSE ACAD
Filing Date
2022-08-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing aerial video declouding methods fail to adequately utilize the spatial and temporal correlations of the video, resulting in unstable, unsmooth, and unreliable declouding results, making them particularly impractical for large-scale aerial image processing.

Method used

A semi-supervised method for removing thick clouds from aerial videos based on optical flow inpainting is adopted. By semi-supervised cloud region segmentation, optical flow estimation and optical flow completion, combined with single-frame image inpainting technology, the automatic cloud removal processing of video frames is achieved.

Benefits of technology

It achieves automated cloud removal processing of large-scale aerial images, saving training time, making full use of the spatial and temporal information of video frames, and outputting stable, smooth and highly reliable cloud-removed images.

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Abstract

本发明公开了一种基于光流修复的半监督航拍视频去厚云方法,涉及航拍影像处理技术领域,包括对视频帧的云区进行半监督分割;对视频帧进行光流估计,计算相邻帧的前、后向光流场;追溯云区像素的运动,当云区像素运动到某帧云区之外时,对该像素进行光流补全与融合,得到第一阶段去云结果;对第一阶段剩余的云区像素,结合单幅图像修复技术进行扩散、补全与融合,得到第二阶段去云结果。本发明对于航拍的含厚云视频,给定首帧的云区像素级标注,能够自动生成对应的不含云视频,无须大规模数据和训练,处理结果平稳、流畅,充分利用了视频帧的空间和时间信息,可信度较高。
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