A wide range remote sensing image mtf ground simulation test device

Abstract

A wide range remote sensing image MTF ground simulation test device relates to the technical field of imaging quality evaluation of wide range remote sensing systems and solves the problem of technical blanks, including image simulation source acquisition unit, wide range image preprocessing unit and MTF measurement display unit, image simulation source The acquisition unit acquires the simulated wide-width remote sensing image, compresses and stores the acquired wide-width remote sensing image, and decompresses the compressed wide-width remote sensing image to the wide-width image preprocessing unit; the wide-width image preprocessing unit sequentially decompresses the wide-width remote sensing image Noise, full field of view division, extraction of effective ROI area and transmission to the MTF measurement display unit; MTF measurement display unit measures and displays the MTF curve of the effective ROI area. The invention is an MTF ground simulation test device specially for wide-width remote sensing images, which can simulate the imaging process of wide-width remote sensing cameras, and can analyze the imaging quality of wide-width remote sensing cameras by testing its on-orbit dynamic MTF, and can ensure the accuracy of MTF testing.

Description

technical field [0001] The invention relates to the technical field of wide-width remote sensing system imaging quality evaluation, in particular to a wide-width remote sensing image MTF ground simulation test device. Background technique [0002] In recent years, the wide-format remote sensing images acquired by wide-format remote sensing cameras have shown extremely high application value because of containing massive data, but at the same time, they have also brought serious degradation of image quality. Modulation Transfer Function (MTF) is the most widely used image quality evaluation method for evaluating the imaging quality of remote sensing systems; accurately testing the MTF of wide-range remote sensing images is also the basis for applying MTFC-based image restoration methods to improve the image quality of wide-range remote sensing images. The essential. [0003] The MTF on-orbit measurement method is widely used because it can reflect the comprehensive degradati...

AI Technical Summary

Problems solved by technology

However, due to the large difference in imaging quality of each field of view, serious image quality degradation, and lack of typical ground objects in the wide-format remote sensing image, the direct application of the existing MTF test device often leads to the inability to obtain correct and stable test results.

At present, the signal-to-noise ratio of wide-format remote sensing images is low, the image quality is degraded; the size is large, and the imaging quality of each field of view is large; To ensure the accuracy of MTF testing, there is still a lack of an MTF ground simulation test device specifically for wide-format remote sensing images, which cannot provide strong guidance for the analysis of wide-format remote sensing camera imaging quality

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