Satellite-borne camera real-time adaptive imaging method based on target detection
By performing target detection and exposure information calculation on the spaceborne camera, and adaptively adjusting the integration time and circuit gain, the imaging problem of the spaceborne camera under rapid radiation changes was solved, achieving effective detection of faint targets and ensuring imaging quality.
CN122069438APending Publication Date: 2026-05-19HUAZHONG UNIV OF SCI & TECH
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Patent Information
- Application Number
- CN202610177250.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-06
- Publication Date
- 2026-05-19
AI Technical Summary
Technical Problem
Existing spaceborne cameras cannot adapt to rapid changes in the radiation energy of the target when faced with the problem of insufficient detection of faint targets or target saturation.
Method used
By performing target detection on each detection module in the spaceborne camera, capturing a sub-image containing the background region as an anchor image, calculating the exposure information, and adaptively adjusting the integration time and circuit gain based on the exposure information of the anchor image, dynamic adjustment of real-time imaging parameters can be achieved.
Benefits of technology
It achieves effective detection of faint targets, avoids target saturation, and ensures the stability and integrity of imaging quality.
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Smart Images
Figure CN122069438A_ABST
Abstract
The invention discloses a satellite-borne camera real-time adaptive imaging method based on target detection, and belongs to the technical field of space-based information on-satellite processing. From the perspective of satellite detection imaging engineering, imaging parameters of corresponding detection modules are adjusted based on the change condition of the exposure information amount of a frame anchor image where an on-satellite target detection result is located according to the characteristic of large change of the radiation intensity of a detection dynamic target; wherein in consideration of the fact that the gradient value of a target edge pixel area is large and the gradient value of a pixel area in a target contour is small, in order to balance the importance of a weak gradient and a strong gradient, a logarithmic function is used for mapping the relation between the gradient amplitude and the gradient information amount, and therefore the accuracy amount of the exposure information amount of the frame anchor image is achieved; based on this, the method can adapt to the change of the radiation intensity of the target in real time, thereby not only guaranteeing the effective detection of the dark and weak target, but also avoiding the detection saturation, and achieving the imaging of complete target characteristics.
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