Synthetic aperture radar image modeling method and synthetic aperture radar image modeling device

A technology of synthetic aperture radar and image modeling, which is applied in character and pattern recognition, instruments, computer components, etc., and can solve problems such as flexibility and computational efficiency constraints

Active Publication Date: 2016-09-21
SOUTHWEST JIAOTONG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

This improves the accuracy of the dictionary-based method to some extent, but its flexibility and computational efficiency are still constrained

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  • Synthetic aperture radar image modeling method and synthetic aperture radar image modeling device
  • Synthetic aperture radar image modeling method and synthetic aperture radar image modeling device
  • Synthetic aperture radar image modeling method and synthetic aperture radar image modeling device

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Embodiment Construction

[0084] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention. After reading such description, those skilled in the art can easily construct other modifications or replacements, and such modifications or replacements should be understood as falling within the scope of the present invention.

[0085] figure 1 A schematic flow chart of the synthetic aperture radar image modeling method of the present invention is provided, and the specific implementation includes the following steps:

[0086] Step 1: For the input SAR image data X, create a non-normalized gray level histogram Y with non-zero gray values, where Y={h(r); r=1, 2, ..., L-1}, r is the gray level of the SAR image data X, L is the number of gray levels, and h(r) is ...

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Abstract

The invention discloses a synthetic aperture radar image modeling method and a synthetic aperture radar image modeling device. The synthetic aperture radar image modeling method comprises the steps of a first step, creating a gray scale histogram Y; a second step, creating a generalized gamma mixture model; and a third step, based on an HECM-MML-GgammMM algorithm, estimating the mixed weight value of the generalized gamma mixture model, the parameter of each generalized gamma component and an optimal number of the mixture model components, thereby determining the constructed generalized gamma mixture model and finishing image modeling. The synthetic aperture radar image modeling method and the synthetic aperture radar image modeling device can be widely applied on accurate modeling of the SAR image with single-peak or multi-peak distribution characteristic on amplitude and strength and same-texture or heterogeneous-texture characteristic. The parameter has a closed expression form, and furthermore easy realization and high computing efficiency are realized. The synthetic aperture radar image modeling method and the synthetic aperture radar image modeling device have advantages of keeping details in the image, reducing information loss and effectively acquiring image classification result.

Description

technical field [0001] The present invention relates to the technical field of digital image processing, in particular to a synthetic aperture radar image modeling method and device. Background technique [0002] As an important means of earth observation technology, remote sensing platforms (airborne or spaceborne) equipped with Synthetic Aperture Radar (SAR) sensors have the advantages of working in all-weather, all-time, and all-terrain conditions. It has a wide range of applications in detection, ocean forecasting, and disaster monitoring. Today, the rapid development of SAR technology has also greatly expanded its application range. A new generation of high-resolution SAR systems mounted on satellites and aircraft can obtain richer image information than before. However, this also poses new challenges to the interpretation of SAR images, that is, accurate statistical modeling and image classification for SAR image data containing different ground object information an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/29G06F18/10
Inventor 李恒超刘驰
Owner SOUTHWEST JIAOTONG UNIV
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