Area array CMOS optical camera-based satellite-borne super-resolution reconstruction method

A super-resolution reconstruction, optical camera technology, applied in the field of on-board super-resolution reconstruction, can solve the problems of low image signal-to-noise ratio, exposure time cannot use TDI working mode, etc., to improve resolution and signal-to-noise ratio, achieve Real-time/near-real-time super-resolution reconstruction, the effect of reducing design cost

Active Publication Date: 2018-05-29
CHINA ACADEMY OF SPACE TECHNOLOGY
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Problems solved by technology

For the area array CMOS camera, since the exposure time should be strictly less than the relative ground speed of the camera an

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  • Area array CMOS optical camera-based satellite-borne super-resolution reconstruction method
  • Area array CMOS optical camera-based satellite-borne super-resolution reconstruction method
  • Area array CMOS optical camera-based satellite-borne super-resolution reconstruction method

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Embodiment Construction

[0036] In order to better understand the technical content of the present invention, specific embodiments are given and described in detail in conjunction with the accompanying drawings. attached by figure 1As shown, the present invention carries out on-board super-resolution imaging based on an area array CMOS detector, including image acquisition, calculation of pixel offset number, construction of a degradation model, calculation of degradation model parameters, image preprocessing (sequence image registration area interception and Image deblurring), image registration, establishment of super-resolution reconstruction model for reconstruction and image stitching eight steps. Take a sun-synchronous orbit remote sensing satellite with an orbital height of 500 kilometers and a visible light CMOS camera with a spatial resolution of 2m as an example. Assume that the satellite attitude stability is 0.005 degrees per second, and the CMOS camera operates at a frame push mode of 20 ...

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Abstract

The invention relates to an area array CMOS optical camera-based satellite-borne super-resolution reconstruction method. The method includes the following steps that: step 1, K multi-temporal low-resolution image sequences to be processed in the same scene are obtained through an array CMOS detector; step 2, as for a non-geostationary orbit optical remote sensing satellite, the number P of offsetpixels is calculated according to satellite orbital parameters; step 3, a degenerate model is constructed; step 4, the parameters of the degenerate model are obtained through calculation; step 5, theimages of a region of interest are preprocessed, and preprocessing includes sequence image registration area interception and image de-blurring; step 6, a position dislocated and geometrically deformed matrix is obtained through image registration; step 7, reconstruction is performed through using a super-resolution reconstruction algorithm; and step 8, operation in step 6 to step 7 is performed repeatedly on the remaining images of the region of interest until the reconstruction of the entire ROI is completed, and an entire super-resolution image is obtained through image splicing.

Description

technical field [0001] The invention belongs to the field of satellite remote sensing and relates to an on-board super-resolution reconstruction method based on an area array CMOS optical camera. Background technique [0002] Image is the most direct way to obtain information. How to increase the amount of information it carries has always been a key research direction, which can be seen from the continuous update and development of high-resolution images in recent years. However, in many fields such as remote sensing, medical care, security, etc., the improvement of image resolution is often limited by the hardware cost, manufacturing process and information transmission conditions of imaging sensors. As far as the resolution of the optical remote sensing camera is concerned, there are two meanings: the resolution of the optical system and the resolution of the detector, that is to say, the spatial resolution of the optical remote sensing camera is limited by both the optic...

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Application Information

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IPC IPC(8): G06T3/40G06T7/30G06T5/00
CPCG06T3/4053G06T5/003G06T2207/10052G06T7/30
Inventor 李峰辛蕾付杰刘洋李海超贾海鹏贺杨张蕾
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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