Multi-frame image rapid reconstruction method on microsatellite platform

A multi-frame image and micro-satellite technology, applied in image enhancement, image analysis, image data processing, etc., can solve problems such as artificial artifacts, convolution kernels cannot be provided accurately, and measurement noise sensitivity

Pending Publication Date: 2021-06-08
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology

On the one hand, the convolution kernel cannot always be provided accurately as a prior; on the other hand, even with appropriate prior information and an additional regularization term, this inverse problem is still sensitive to measurement noise, which can lead to strong artifacts

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  • Multi-frame image rapid reconstruction method on microsatellite platform
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  • Multi-frame image rapid reconstruction method on microsatellite platform

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Embodiment Construction

[0047] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that are used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.

[0048] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, and the embodiments cannot be repeated here one by one, but the embodiments of the present invention are not therefore limited to the following embodiments.

[0049] see figure 1 , the multi-frame image rapid reconstruction method on the micro-satellite platform of the present invention, first establishes the load observation jitter model according to the power spectrum of the satellite platform, of course, in the proce...

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Abstract

The invention relates to a multi-frame image rapid reconstruction method on a microsatellite platform. The method comprises the following steps of: a, establishing a load observation jitter model according to a power spectrum of the satellite platform; b, acquiring a short-exposure image in combination with a jitter model, and registering the image; c, performing multi-frame superposition reconstruction on the registered image; and d, carrying out noise reduction and filtering on the reconstructed image. According to the method, the problem of restoration of multiple frames of images with relative movement in an actual scene observed on a microsatellite platform can be accurately and quickly solved, the focal plane imaging blurring phenomenon caused by load pointing jitter in the imaging process is effectively removed, and the system imaging resolution is improved. Moreover, the method is low in calculation complexity, has the capability of on-satellite real-time operation, and is suitable for observation of different scenes such as astronomical imaging and earth observation based on microsatellites or similar spacecrafts.

Description

technical field [0001] The invention relates to a fast reconstruction method of multi-frame images on a tiny satellite platform. Background technique [0002] At present, the miniaturization trend in the global satellite application field is accelerating, and micro-satellites are showing explosive development. The progress of engineering subsystems such as satellite attitude control, thermal control, propulsion, communication, on-board processing, and payload have all prompted the further development of micro-satellites in the direction of high performance. For example, the Purple Pupil Science Satellite is a tiny astronomical satellite developed in recent years. The goal is to realize two-color photometry for exoplanet occultation, stellar activity monitoring in the ultraviolet band, and near-Earth asteroid monitoring in Earth orbit. [0003] The pointing of the space telescope will drift or shake randomly during the observation period, resulting in a decrease in the accu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50G06T7/33G06T5/00
CPCG06T5/002G06T5/003G06T5/50G06T2207/20221G06T7/344
Inventor 刘冀林霍卓玺方越东林亲
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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