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A Multi-focus Image Fusion Method Based on Bilateral Filter

A bilateral filter, multi-focus image technology, applied in the field of image processing, can solve problems such as low efficiency, achieve strong robustness, good edge retention characteristics, and small distortion.

Active Publication Date: 2019-03-01
XIANGTAN UNIV
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Problems solved by technology

But these algorithms need to iterate many times to find the global optimal solution, so the efficiency is very low

Method used

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  • A Multi-focus Image Fusion Method Based on Bilateral Filter
  • A Multi-focus Image Fusion Method Based on Bilateral Filter
  • A Multi-focus Image Fusion Method Based on Bilateral Filter

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Embodiment Construction

[0028] combine figure 1 , according to one aspect of the present invention, the specific implementation steps of the present invention are as follows:

[0029] Step 1. To the source image Perform single-scale image decomposition to obtain the base layer image and the intermediate image :

[0030] 1) Change the first source image Filtering through a Laplacian high-pass filter yields the first source image filtered image of :

[0031] ;

[0032] 2) By filtering the image The absolute value of is low-pass filtered to get the source image The basic layer of , as shown in the following formula:

[0033] ,

[0034] In the formula Represents the filter function of the low-pass filter, and the filter window size is ,and and Both are set to 5;

[0035] 3) Convert the source image to itself as a guide image for bilateral filtering, and for the source image Perform bilateral filtering to obtain the middle layer image , No. The middle layer imag...

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Abstract

The present invention proposes a multi-focus image fusion method based on bilateral filters. Steps of the present invention: first, decompose the source image to obtain the base layer and the edge layer. Then, in terms of fusion strategy, a bilateral filtering algorithm is introduced to determine the fusion weights of the base layer and the edge layer respectively to fully utilize the space of the base layer and the edge layer. Continuity. Finally, the fused base layer and edge layer are added to obtain the final fused image. The multi-focus image fusion method proposed by the present invention has a good edge preservation effect while retaining image information, and can achieve good subjective effects and high objective indicators.

Description

technical field [0001] The invention belongs to the technical field of image processing and relates to image fusion technology, in particular to a multi-focus image fusion method based on a bilateral filter. Background technique [0002] Image fusion is an important technique in computer vision applications such as image processing and feature extraction and object recognition. Through image fusion, two or more images of the same scene are synthesized into a new image. The fused new image can integrate the complementary advantages of each image and provide more comprehensive and reliable image information of the scene, which is beneficial to the scene and target. The identification and positioning of the machine is also conducive to machine perception. [0003] At present, there are many image fusion algorithms, which are mainly divided into image fusion based on spatial domain and image fusion based on transform domain. The method based on the spatial domain mainly perfor...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50G06T5/00
CPCG06T5/50G06T5/00
Inventor 朱江刘蕴娴裴廷睿张瑞洲田淑娟印峰许海霞崔荣埈关屋大雄
Owner XIANGTAN UNIV
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