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Image merging method based on inseparable wavelet frame

A wavelet frame, inseparable technology, applied in the field of multispectral remote sensing images, to achieve the effect of improving spatial information and quality

Inactive Publication Date: 2006-10-25
SHANGHAI JIAOTONG UNIV
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  • Description
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But it has not been used in the field of image fusion

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  • Image merging method based on inseparable wavelet frame
  • Image merging method based on inseparable wavelet frame
  • Image merging method based on inseparable wavelet frame

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Embodiment Construction

[0023] In order to better understand the technical solutions of the present invention, the implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] The present invention is specifically implemented as follows:

[0025] 1. Register the low-spatial-resolution multispectral image and the high-spatial-resolution panchromatic remote sensing image of the same landform, and then interpolate and resample the low-spatial-resolution image to achieve the same Size.

[0026] The multi-spectral remote sensing image and high-resolution panchromatic remote sensing image obtained in the embodiment of image resampling using the cubic convolution interpolation method are as follows: figure 2 (a), (b) shown.

[0027] 2. Perform IHS transformation on the multi-spectral remote sensing image to obtain the chroma H, saturation S and intensity component I respectively. For the IHS transformation, the following transfor...

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Abstract

The invention relates to an image fusion method based on a non-separable wavelet frame, which is used to fuse high spatial resolution panchromatic remote sensing images and low spatial resolution multispectral remote sensing images of the same ground object. On the basis of registration and interpolation resampling of the original image, IHS transformation is performed on the multi-spectral remote sensing image, the inseparable wavelet frame decomposition is performed on the high-resolution panchromatic image, and multi-scale enhancement operation is performed on it to fully improve For the spatial information of the fused image, the spectral information and spatial information of the fused image are improved by directly replacing the low-frequency part of the high-resolution panchromatic image with the I component in the IHS transform of the multispectral image, and finally reconstructed using the wavelet framework And perform IHS inverse transformation to obtain the fused image. Compared with the separable wavelet method, the present invention has better frequency characteristics and direction attributes, can be flexibly designed for different purposes, and the quality of the fused image can be greatly improved.

Description

Technical field: [0001] The invention relates to an image fusion method based on a non-separable wavelet frame, which is used to fuse panchromatic remote sensing images with high spatial resolution and multispectral remote sensing images with low spatial resolution. It is widely used in various civilian or military remote sensing information processing systems, digital city space information systems and other fields. Background technique: [0002] Image fusion is the fusion of visual information in multi-sensor information fusion. It uses different imaging methods of various imaging sensors to provide complementary information for different images, increase the amount of image information, reduce the amount of original image data, and improve the adaptability to the environment. , to obtain more reliable and accurate useful information for observation or further processing. It has been widely used in military, medical, remote sensing, computer vision and other fields. [0...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50G01S7/48G06T1/00
Inventor 敬忠良王宏李建勋
Owner SHANGHAI JIAOTONG UNIV