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A sub-pixel localization method of remote sensing image based on panchromatic sharpening technology

A remote sensing image and panchromatic image technology, applied in the field of remote sensing information processing, can solve the problems of affecting the positioning accuracy, low spatial resolution, and it is difficult for the abundance image to fully carry the original image, and achieve the effect of high positioning accuracy.

Active Publication Date: 2019-09-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, these sub-pixel positioning methods directly act on the rough abundance image obtained by spectral unmixing technology. Due to the low spatial resolution of the original hyperspectral image and the limitations of current spectral unmixing technology, it is difficult for the abundance image to fully carry the original hyperspectral image. The spatial-spectral information of the image affects the final positioning accuracy

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  • A sub-pixel localization method of remote sensing image based on panchromatic sharpening technology
  • A sub-pixel localization method of remote sensing image based on panchromatic sharpening technology
  • A sub-pixel localization method of remote sensing image based on panchromatic sharpening technology

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Embodiment Construction

[0035] Such as figure 1 As shown, a remote sensing image sub-pixel positioning method based on panchromatic sharpening technology includes the following steps:

[0036] (1) The input is the original low-resolution remote sensing image Y of size M×N and the high-spatial resolution panchromatic image P of the same area of ​​size MS×NS through panchromatic sharpening technology based on component substitution (CS) Perform fusion to produce pan-sharpened results with high spectral and spatial resolution

[0037] CS projects the original original low-resolution remote sensing image Y to another space in order to separate the spatial structure and spectral information into different components. Subsequently, the spatial resolution of the transform-domain image is enhanced by replacing components containing spatial structures with a high-spatial-resolution panchromatic image P. The greater the correlation between the panchromatic image and the replaced component, the smaller the ...

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Abstract

The invention discloses a remote sensing image sub-pixel positioning method based on panchromatic sharpening technology, which includes the following steps: (1) combining the original low-resolution remote sensing image and the high-spatial-resolution panchromatic image from the same area through the The components replace the panchromatic sharpening technology of CS for fusion to generate remote sensing images with high spectral resolution and spatial resolution; (2) The remote sensing images with high spectral resolution and spatial resolution obtained by panchromatic sharpening technology are passed Spectral unmixing technology obtains a high-resolution abundance image containing rich spatial-spectral information of the original image; (3) according to the sub-pixel soft attribute values ​​provided by the high-resolution abundance image containing rich spatial-spectral information, assign The method assigns the hard attribute value to each sub-pixel to obtain the final sub-pixel positioning result. The present invention can make more full use of the space-spectral information of the original image and obtain a result with higher positioning accuracy.

Description

technical field [0001] The invention relates to the technical field of remote sensing information processing, in particular to a remote sensing image sub-pixel positioning method based on panchromatic sharpening technology. Background technique [0002] The mixed pixels produced by the diversity of land cover types and the limitation of the sensor's instantaneous field of view are the main factors restricting the spatial resolution of hyperspectral images. These constraints make it very difficult to accurately identify objects on the ground, and accurate object identification is of great significance to industry, agriculture, environment and military. Therefore, one of the hot issues in the field of remote sensing information processing technology today is to process mixed pixels to improve the accuracy of object recognition. Sub-pixel positioning technology (also known as super-resolution mapping technology) subdivides each mixed pixel into sub-pixels through a certain sca...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/62G06T7/73
CPCG06T7/73G06T2207/10032G06T2207/10024G06T2207/30181G06V20/194G06V20/13G06F18/2413
Inventor 王鹏张弓
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS