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Multimodality image fusion method combining multi-scale bilateral filtering and direction filtering

A technology of directional filtering and bilateral filtering, which is applied in the field of information processing, can solve problems such as the inability to accurately and reliably measure the importance of image local features in combination, and achieve the goal of reducing wrong selection, enriching edges and details, and avoiding ringing effects Effect

Inactive Publication Date: 2011-04-06
HUNAN UNIV
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Problems solved by technology

In the previous fusion algorithm, both aspects were involved, but they were not effectively combined, and the importance of local features of the image could not be accurately and reliably measured.

Method used

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  • Multimodality image fusion method combining multi-scale bilateral filtering and direction filtering
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  • Multimodality image fusion method combining multi-scale bilateral filtering and direction filtering

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Embodiment Construction

[0017] In order to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] see figure 1 , is a flowchart of the method of the present invention. First, the two source images I A and I B Implement multi-scale bilateral decomposition and directional filter decomposition to obtain their multi-scale and multi-directional sub-band images, fuse these sub-band images to obtain fused multi-scale and multi-directional sub-band images, and then perform directional filtering reconstruction and The inverse multi-scale bilateral transformation can obtain the fused image I F . Its specific implementation is as follows:

[0019] 1. See image 3 (a) and image 3 (b), for the source image I A and I B Implement multi-scale bilateral decomposition to obtain their low-pass subband images and Qualcomm subband image Where (i, j) is the spa...

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Abstract

The invention belongs to the technical field of information processing and particularly relates to a multimodality image fusion method combining multi-scale bilateral filtering and direction filtering. The invention is used to fuse the images of different sensors of the same scene or the same target. The method comprises the following steps: firstly, the multi-scale bilateral filtering is utilized to decompose each source image and obtain a low-pass image and a series of high-pass images; secondly, direction filtering is performed to the high-pass images to the direction indications of the images, then the low-pass images and the directional sub-band images are separtely fused according to a certain fusion rule to obtain a fused low-pass image and a fused directional sub-band image; and finally, the fused image is obtained through direction filtering reconstruction and inverse multi-scale bilateral filtering. The method of the invention has better fusion effect and is better than the traditional multi-scale geometric analysis method; and the quality of the fused image is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of information processing, and in particular relates to a multi-mode image fusion method combining multi-scale bilateral filtering and directional filtering. Background technique [0002] Image fusion technology is to process multiple images of the same scene or the same target collected by multiple sensors and synthesize them into one image, which is the fusion of visual information in the fusion of multi-sensor information. It uses the characteristics of different imaging methods of various imaging sensors to provide complementary information for different images, making the information of the fused image more abundant, and more accurately and reliably reflecting the information of the scene or target. Image fusion technology can improve the spatial and temporal coverage of images, reduce uncertainty, and improve system reliability and robustness. It is an emerging technology that integrates sensors, image...

Claims

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Application Information

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IPC IPC(8): G06T5/50
Inventor 李树涛胡建文
Owner HUNAN UNIV
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