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Method for registration of multispectral image based on small component and noise component

A multi-spectral image and noise component technology, applied in image analysis, image data processing, instruments, etc., can solve the problems of deviation of the maximum value from the correct position, misjudgment, etc. quasi-algorithmic effect

Inactive Publication Date: 2010-01-13
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the registration process between some images, the maximum value judged by this method deviates from the correct position, that is, the mutual information judgment criterion may cause misjudgment

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  • Method for registration of multispectral image based on small component and noise component
  • Method for registration of multispectral image based on small component and noise component
  • Method for registration of multispectral image based on small component and noise component

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Embodiment Construction

[0020] In the actual use of a multispectral camera, there may be platform movement, external vibration, background movement, etc., which may cause a certain offset between different bands of the multispectral image. The offset has the characteristics of overall rigidity and small offset, and the rigid transformation model can be used to register images in each band.

[0021] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0022] Taking the image data of five bands of ETM satellite TM1, TM2, TM3, TM4, TM5 as an example, the method of the present invention comprises the following main steps:

[0023] 1. Perform pre-processing work such as scale transformation, area selection, and control point selection on multispectral images.

[0024] Image offset has the characteristics of overall rigidity, and can use the whole image for registration, or select a certain area for search and registration. Here we select the center ...

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Abstract

The invention provides a multispectral image registering method based on the small component and the noise component. The invention first performs the earlier processing work of the scaling transformation, the area selecting, the reference point selecting and the like on the multispectral image, then uses the traditional method to perform the primary registration, uses the several minimum characteristic values to construct the cost function through computing the image autocorrelative matrix or covariance matrix, to look for the minimum of the cost function and realize the registration. The invention has good robustness and accuracy, which not only can correct the registration mistakes based on the methods of mutual information and the crosscorrelation and the like with higher registration accuracy.

Description

(1) Technical field [0001] The invention relates to a method for multispectral image registration, which belongs to the field of computer information image processing. (2) Background technology [0002] Multispectral images are not only valued by agriculture, forestry, geology, mining, environmental protection and other departments, but also have a wide range of uses in the military to reveal camouflage, enhance target recognition, and discover new targets. The multi-spectral image processing method mainly uses the spectral information of multiple bands to process simultaneously, so it has the incomparable advantages of single-band cameras. However, when there are vibrations, platform movement, background movement, etc. in the outside world, it may cause a slight mismatch in some bands. Through the simulation of the multispectral image processing algorithm, it can be found that even this slight mismatch will affect the multispectral image. The performance of spectral camera...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00
Inventor 崔金辉张新陆邓虎
Owner HARBIN ENG UNIV