Multi-Focus Image Fusion Method Based on Multi-Scale Decomposition of Information Complementary

被引:3
|
作者
Wan, Hui [1 ,2 ]
Tang, Xianlun [3 ]
Zhu, Zhiqin [3 ]
Li, Weisheng [1 ]
机构
[1] Chongqing Univ Posts & Telecommun, Coll Comp Sci & Technol, Chongqing 400065, Peoples R China
[2] Chongqing Normal Univ, Coll Comp & Informat Sci, Chongqing 401331, Peoples R China
[3] Chongqing Univ Posts & Telecommun, Coll Automat, Chongqing 400065, Peoples R China
关键词
multi-focus image fusion; singular value decomposition; multi-scale decomposition; PA-PCNN; quaternion; joint bilateral filter; TRANSFORM;
D O I
10.3390/e23101362
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Multi-focus image fusion is an important method used to combine the focused parts from source multi-focus images into a single full-focus image. Currently, to address the problem of multi-focus image fusion, the key is on how to accurately detect the focus regions, especially when the source images captured by cameras produce anisotropic blur and unregistration. This paper proposes a new multi-focus image fusion method based on the multi-scale decomposition of complementary information. Firstly, this method uses two groups of large-scale and small-scale decomposition schemes that are structurally complementary, to perform two-scale double-layer singular value decomposition of the image separately and obtain low-frequency and high-frequency components. Then, the low-frequency components are fused by a rule that integrates image local energy with edge energy. The high-frequency components are fused by the parameter-adaptive pulse-coupled neural network model (PA-PCNN), and according to the feature information contained in each decomposition layer of the high-frequency components, different detailed features are selected as the external stimulus input of the PA-PCNN. Finally, according to the two-scale decomposition of the source image that is structure complementary, and the fusion of high and low frequency components, two initial decision maps with complementary information are obtained. By refining the initial decision graph, the final fusion decision map is obtained to complete the image fusion. In addition, the proposed method is compared with 10 state-of-the-art approaches to verify its effectiveness. The experimental results show that the proposed method can more accurately distinguish the focused and non-focused areas in the case of image pre-registration and unregistration, and the subjective and objective evaluation indicators are slightly better than those of the existing methods.
引用
收藏
页数:28
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