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Image merging method based on filter group

A filter bank and prototype filter technology, applied in the field of multi-spectral images, can solve problems such as the inability to decompose multiple channel signals, and achieve the effect of improving quality and spatial information

Inactive Publication Date: 2007-05-02
SHANGHAI JIAOTONG UNIV
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  • Application Information

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Problems solved by technology

For binary wavelet transform, it can only achieve two-channel signal decomposition, and cannot achieve signal decomposition of multiple channels

Method used

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  • Image merging method based on filter group
  • Image merging method based on filter group
  • Image merging method based on filter group

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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. The present invention is specifically implemented as follows:

[0024] 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 multispectral image to achieve same size.

[0025] The low-spatial-resolution multispectral image and high-spatial-resolution panchromatic remote sensing image obtained in the embodiment of image resampling using the cubic convolution interpolation method are shown in Figure-3 (a), (b).

[0026] 2. Perform histogram matching on high spatial resolution panchromatic remote sensing images and low spatial resolution multispectral images to make their gray mean and variance consistent.

[002...

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Abstract

The invention refers to an image merging method based on filter group, making filter group decomposition on high-resolution panchromatic image and multispectral image, respectively, to obtain sub-images of many frequency bands, adopting low-frequency part of multispectral image to replace that of high-resolution panchromatic image to merge different resolution remote sensing images, and finally reconfigures the filter group to obtain the merged image.

Description

Technical field: [0001] The invention relates to an image fusion method based on a filter group, which is used for fusion of high spatial resolution panchromatic remote sensing images and low spatial resolution multispectral images. 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] With the rapid development of imaging sensor technology, remote sensing image processing has developed from a single-platform, single-sensor processing method to a multi-platform, multi-sensor multi-image processing method. Due to the use of different imaging sensors, different remote sensing data have different spatial and spectral resolutions. For multispectral sensors, it can obtain multispectral images with high spectral resolution and low spatial resolution; for panchromatic sensors, remote sensing images with high spatial resolution can be obtained. Using i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50G06T5/40G01S7/48G06T1/00
Inventor 敬忠良王宏李建勋
Owner SHANGHAI JIAOTONG UNIV