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Single satellite remote sensing image small target super resolution ratio reconstruction method

A satellite remote sensing image and super-resolution reconstruction technology, applied in the field of satellite remote sensing images, can solve the problems of the lack of a unified objective evaluation standard for the quality evaluation of the reconstructed image, the adaptive robustness of the reconstruction algorithm, etc. Amplification and introduction of false information, breakthrough cutoff frequency, high deblurring efficiency

Inactive Publication Date: 2006-09-13
BAINIAN JINHAI SCI & TECH
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Problems solved by technology

However, there are still many problems in the research of super-resolution image reconstruction, such as: 1. How to restore high-frequency detail information while suppressing the amplification of high-frequency noise; 2. There is still no unified objective evaluation standard for the quality evaluation of reconstructed images; 3. Effective identification method of system parameters; 4. Adaptability and robustness of reconstruction algorithm, etc.

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  • Single satellite remote sensing image small target super resolution ratio reconstruction method
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Embodiment Construction

[0030]The present invention proposes to use remote sensing image linear objects, edge detection, image analysis and empirical formulas to identify the dedefinition parameters of my country's in-orbit satellite remote sensors; proposes a method based on morphological redundant wavelet transform to suppress high-frequency noise signals in the process of image reconstruction On the basis of increasing the high-frequency detail information of remote sensing images, regularization is carried out in the frequency and wavelet domains respectively, suppressing false information, and realizing super-resolution reconstruction of small targets. On the other hand, the robustness and adaptability of the reconstruction algorithm are improved. It is mainly used in satellite image military target recognition, small target detection and remote sensing image measurement.

[0031] The present invention is a method for super-resolution reconstruction of a small target in a single remote sensing ima...

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Abstract

A method for rebuilding super resolution of small object on single frame satellite remote sense image includes setting up clear - drop model of on - track satellite remote sense influence, discriminating clear - drop parameter, estimating S - N ratio and calculating normalization factor, cutting said image to be superposed sub blocks by rebuilding algorithm, normalizing frequency domain and redundant wavelet domain, decorrelating de - noising operator, setting up fast algorithm of super resolution image rebuild, rebuilding sub pixel, using modulation transfer function as objective standard for evaluating resolution and quality of image.

Description

technical field [0001] The invention relates to the field of satellite remote sensing images, in particular to a method for super-resolution reconstruction of a small target in a single satellite remote sensing image based on the identification of in-orbit satellite resolution reduction parameters. Background technique [0002] In the process of satellite optical imaging, transmission, and acquisition of remote sensing images, due to the influence of atmospheric disturbance, defocus, and relative motion on the imaging system, the image will be degraded to varying degrees, typically aliasing, blurring, distortion, and system noise. As a result, small targets cannot be detected and identified. Super-resolution reconstruction is an algorithm for reconstructing images with better image quality and high spatial resolution from images with poorer quality and lower resolution. It is mainly used in satellite imagery military target recognition, small target detection and remote sens...

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Application Information

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IPC IPC(8): G01S7/48G01S17/89
Inventor 秦前清孙涛杨志高林立宇梅天灿杨杰武文波
Owner BAINIAN JINHAI SCI & TECH
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