基于相移时间编码与成像空间一致性的四维时空场重构方法

By employing a four-dimensional spatiotemporal field reconstruction method that combines phase-shift time coding with imaging spatial consistency, the problems of image acquisition time uncertainty and imaging geometric model parameter differences for ultra-generalized stereo image pairs are solved, thus achieving efficient four-dimensional spatiotemporal field reconstruction for time-varying scenes.

CN120147524BActive Publication Date: 2026-07-17THE INST OF AUTOMATION HEILONGJIANG ACADEMY OF SCI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE INST OF AUTOMATION HEILONGJIANG ACADEMY OF SCI
Filing Date
2025-02-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the image acquisition time of ultra-generalized stereo image pairs is uncertain, which makes fitting difficult. Differences in the representation and accuracy of imaging geometric model parameters lead to inaccurate light sample mapping direction and deviations in geometric constraints, making it difficult to achieve effective four-dimensional spatiotemporal field reconstruction.

Method used

A four-dimensional spatiotemporal field reconstruction method based on phase-shift time coding and imaging spatial consistency is adopted. By constructing a spatiotemporal field function, the imaging geometric model parameters are optimized, the imaging geometric model is unified, the spatiotemporal representation complexity of the scene is reduced, and the temporal correlation and spatial mapping deviation between images are resolved.

Benefits of technology

It realizes the four-dimensional spatiotemporal field reconstruction of time-varying scenes, reduces the complexity of scene spatiotemporal representation, optimizes the temporal correlation and spatial mapping between images, and improves the accuracy of geometric constraints of light samples.

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Abstract

基于相移时间编码与成像空间一致性的四维时空场重构方法,本发明涉及四维时空场重构方法。本发明的目的是为了解决现有超广义立体像对的图像获取时间不确定,存在拟合困难的隐患;以及图像间成像几何模型参数表示形式和精度的差异性,致使光线样本的映射方向不准确,导致光线联合构造的几何约束存在偏差的问题。过程为:步骤一、构建时空场函数;步骤二、将遥感图像成像几何模型映射至时空场坐标系;对时空场坐标系下的遥感图像成像几何模型参数进行优化,获得时空场坐标系下的最优参数的遥感图像成像几何模型;步骤三、基于构建的时空场函数和时空场坐标系下的最优参数的遥感图像成像几何模型,完成四维时空场的重构。本发明用于时空场重构领域。
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