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Image change detecting method based on principle component general inverse transformation

A technology of image change detection and generalized inverse transformation, applied in the field of image processing, to achieve excellent performance, high detection accuracy, and reduce the effect of noise interference

Inactive Publication Date: 2011-05-18
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, these change detection methods are generally proposed for specific applications, and there is no general change detection method that can be applied to all occasions

Method used

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  • Image change detecting method based on principle component general inverse transformation
  • Image change detecting method based on principle component general inverse transformation
  • Image change detecting method based on principle component general inverse transformation

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Embodiment Construction

[0023] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0024] This embodiment includes the following steps:

[0025] The first step is the reorganization of image data. The image is an airport image taken by two phases of aviation, and the image size is 410*294, such as figure 1 shown, where figure 1 (a) is the image before the change, figure 1 (b) is the registered image, figure 1 (c) is the changed image (manually processed). In order to test the robustness of the model to noise, etc., manually process the images before the change to synthesize a set of images, such as figure 2 shown, where figure 2 (a) is the image processed by adding Gaussian noise, figu...

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Abstract

The invention relates to an image change detecting method based on principle component general inverse transformation in the technical field of image processing. The method comprises the following steps of: carrying out transformation in two characteristic spaces after reorganizing data of an image to be detected; carrying out waveband updating differential treatment in the transformed characteristic spaces to obtain a changed component; and extracting a change area by an automatic threshold value confirming method to realize image change detection. The invention carries out differential detection on an image in the characteristic spaces obtained after principle component general inverse transformation, effectively inhibits noise, reduces the influence of image fuzzy distortion, and the like on the reduction of detecting precision and improves the detecting precision.

Description

technical field [0001] The present invention relates to a method in the technical field of image processing, in particular to an image change detection method based on principal component generalized inverse transform. Background technique [0002] With the rapid development of aerospace technology, sensor technology, computer technology and related sciences, remote sensing technology is playing an increasingly important role in social life and economic construction. Change detection is the process of quantitatively analyzing and determining surface changes from remote sensing image data of the same region in different periods. It has broad application prospects in updating geographic data, assessing disasters, predicting disaster development trends, land cover / use detection, and a new generation of intelligent earth observation satellites. [0003] Usually, change detection is performed on unknown target areas, and due to some characteristics of the remote sensing image it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 胡军辉杨杰
Owner SHANGHAI JIAO TONG UNIV
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