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

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...

AI Technical Summary

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 and the TDI working mode of the original physical structure cannot be used, the signal-to-noise ratio of the acquired image is low

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