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Multi focus image fusion method based on NSCT scale product

A multi-focus image and fusion method technology, applied in the field of multi-focus image fusion based on NSCT scale product, can solve the problems of inconsistent image effects, no consideration of noise influence and human visual effect, etc.

Inactive Publication Date: 2014-03-12
西安钧能科技有限公司
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Problems solved by technology

[0004] Through the study of a large number of literatures, it can be known that the algorithm for multi-focus image fusion does not consider the influence of noise on the image and the visual effect of the human eye, which will cause the fused image to be inconsistent with the effect perceived by the human eye.

Method used

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  • Multi focus image fusion method based on NSCT scale product
  • Multi focus image fusion method based on NSCT scale product
  • Multi focus image fusion method based on NSCT scale product

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Experimental program
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Embodiment Construction

[0056] refer to figure 1 , the concrete process of the present invention comprises:

[0057] Step 1: Image filtering processing

[0058] Perform mean value filtering on the two source images A and B to obtain filtered source images A' and B';

[0059] Step 2: Image Decomposition

[0060] Apply NSCT to decompose the source images A' and B', and obtain the low-frequency subband and high-frequency direction sub-band of the source image A', and the low-frequency sub-band and high-frequency direction sub-band of the source image B' respectively;

[0061] Step 3: Fusion Rules

[0062] 1) Formula (3) is adopted as the fusion rule of the low-frequency sub-band;

[0063] 2) Firstly, the scale product operation is performed on the high-frequency sub-bands, and the formula (8) is used as the fusion rule of the high-frequency direction sub-bands.

[0064] Step 4: Image Reconstruction

[0065] The NSCT inverse transform is performed on each subband coefficient of the fused image to obt...

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Abstract

The invention discloses a multi focus image fusion method based on NSCT scale product. The method comprises the steps that non-sampling contourlet transform (NSCT) is used to decompose a multi focus image; laplace energy and the fusion rule of a low frequency sub-band are used; scale product, local laplace energy and the fusion rule of a high frequency direction sub-band are used; and NSCT inverse operation is used to acquire a fusion image. According to an experiment results, the algorithm can fully extract source image information and can inject the information into the fusion image; the influence of noise can be effectively restrained; and the fusion effect is better than the fusion effects of other methods.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to a multi-focus image fusion method based on NSCT scale product. Background technique [0002] Image fusion is one of the research hotspots in the current image processing field. It is widely used in remote sensing, machine vision, medicine, military, judicial and manufacturing fields. When image sensors such as CCD or CMOS are used to acquire images, due to the depth of field of the lens, the scene on the focal plane can be clearly projected on the image, while the scenes on other positions are blurred to varying degrees on the image. An image that is focused everywhere is a prerequisite for many subsequent processes. The main method to solve this problem is multi-focus image fusion technology, that is, a series of images are taken with different focal length settings, and then these images are fused to obtain a single image. Clear blended images everywhere. [0003] At present, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50
Inventor 但春林封长林
Owner 西安钧能科技有限公司
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