Exiting multi-focus image fusion methods based on discrete cosine transform (DCT) domain cause blocking effects and artifacts in the fused images. To address this problem, an image fusion algorithm concentrated on texture features in the DCT domain is proposed. The proposed method separates each 8×8 DCT block into several texture regions having various directivity of energy distribution in the source images. Similarity of the frequency spectra for the two texture regions are calculated. The part of the fused image is obtained by selecting the one with more energy, or using the weighted result. Experimental results show that the proposed algorithm can effectively reduce blocking effects and artifacts. Compared with exiting approaches in DCT domain, the proposed algorithm can provide fused images with better subjective quality.
TANG Zhen-hua, LIANG Cong, OU Cheng, HUANG Xu-fang, QIN Tuan-fa
. Multi-focus Image Fusion Based on Texture Features in DCT Domain[J]. Journal of Applied Sciences, 2015
, 33(6)
: 628
-636
.
DOI: 10.3969/j.issn.0255-8297.2015.06.006
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