Multi-focus image fusion method based on octagonal pyramid frame
A multi-focus image and fusion method technology, applied in the field of image information fusion, can solve problems such as inability to achieve self-adaptation, determination of the number of source image decomposition layers, and lack of effective retention of low-frequency information.
Active Publication Date: 2020-07-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
It can be seen that the method based on multi-scale transformation has the following problems: 1) Determination of the number of decomposition layers of the source image
In the traditional multi-scale method, it is necessary to manually set the number of decomposition layers of the image, which cannot realize the self-adaptation of this parameter; 2) The traditional multi-scale method can only obtain a base layer in the image decomposition, and lacks low-frequency information. effective retention capacity
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[0069] In order to better illustrate the purpose and advantages of the present invention, the content of the invention will be further described below in conjunction with the accompanying drawings and examples. In this embodiment, two source images are used to describe the multi-focus image fusion method based on the octave pyramid framework disclosed in the present invention in detail. figure 2 and image 3 The flow of the multi-focus image fusion method based on the octave pyramid framework is introduced in detail.
[0070] The specific implementation steps of the multi-focus image fusion method based on the octave pyramid framework disclosed in this embodiment are as follows:
[0071] Step 1: Use the Gaussian kernel function to implement Gaussian blur on the image to obtain a Gaussian blurred image.
[0072] The traditional Gauss formula is:
[0073] L(x,y,σ 0 ) = G(x,y,σ 0 )*I(x,y) (18)
[0074] in
[0075]
[0076] G(x,y,σ 0 ) refers to the Gaussian kernel fun...
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The invention discloses a multi-focus image fusion method based on an octagonal pyramid frame, and belongs to the technical field of image information fusion. According to the invention, the method comprises the steps: carrying out the Gaussian blurring on an image by using a Gaussian kernel function; decomposing the Gaussian blur image, and constructing an octagonal Gaussian pyramid; performing difference between every two obtained eight-degree Gaussian pyramid images, obtaining multiple groups of base layer and detail layer images at the same time, and constructing an eight-degree differenceGaussian pyramid; fusing the base layer images in the eight-degree differential Gaussian pyramid by adopting a visual saliency strategy so as to reserve background and contrast information of the source image; fusing detail layer images in the eight-degree differential Gaussian pyramid by adopting a gradient maximum value strategy, and enhancing texture detail information in the fused image; andperforming eight-degree difference Gaussian pyramid reconstruction on the fused base layer and detail layer to obtain a fused image with richer low-frequency information and high-frequency information. According to the invention, powerful support can be provided for subsequent target identification, target detection and the like.
Description
technical field [0001] The invention relates to a multi-focus image fusion method based on an octave pyramid framework, in particular to a method for realizing fusion of multi-focus images in an octave pyramid framework, and belongs to the technical field of image information fusion. Background technique [0002] With the development of the economy and the rapid development of science and technology, the scope of use of various sensors is gradually increasing. Different sensors have different requirements for imaging excitation, use function, working range, and operating environment to complete different tasks. Multi-source image fusion can obtain various information and increase the stability, fault tolerance and reliability of the system operation. Therefore, it is widely used in many fields, such as remote sensing, pattern recognition, medical imaging and military. Among them, multi-focus image fusion occupies an important position in the field of image fusion. The mult...
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IPC IPC(8): G06T5/50G06T5/00
CPCG06T5/50G06T2207/20221G06T2207/20016G06T5/90G06T5/73Y02T10/40
Inventor 郝群曹杰闫雷胡仁伟李国梁苏云征
Owner BEIJING INSTITUTE OF TECHNOLOGYGY