A Wavelet Transform Image Fusion Algorithm Based on Related Coefficients

J4 ›› 2011, Vol. 33 ›› Issue (11): 103-107.

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A Wavelet Transform Image Fusion Algorithm Based on Related Coefficients

YAN Liwei,REN Xiaokang

（School of Mathematics and Information Technology,Northwest Normal University,Lanzhou 730070,China）

Received:2011-05-16 Revised:2011-08-23 Online:2011-11-25 Published:2011-11-25

Abstract

Abstract:

The key problem in multifocus image fusion is how to keep the detail and edge in the original image.Therefore,a new image fusion algorithm is developed based on the related coefficients of wavelet transform.The schemes of choosing high frequency and low frequency coefficients are two approaches designed. While choosing high frequency coefficients,we select these that have the maximal absolute values and combination of averages with selection.When choosing low frequency coefficients,we select two principles based combination of average with selection and coefficients related.The algorithm is used to fuse two multifocused images. In addition, the performance of the fusion methods is appraised and analysed with objective evaluation index. The experiments show that this algorithm can preserve all the useful information from the primitive images and all the targets in the fused image are very clear. Each fusion evaluation index achieves improvement. The algorithm is of certain effective and parctial.

Key words: image fusion;wavelet transform;average and selection;coefficients related;integration of quality assessment

YAN Liwei,REN Xiaokang. A Wavelet Transform Image Fusion Algorithm Based on Related Coefficients[J]. J4, 2011, 33(11): 103-107.

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表1融合图像各项指标的对比
〖〗交叉熵〖〗空间频率〖〗熵〖〗均方根误差〖〗峰值信噪比〖〗均值〖〗标准差图1〖〗第一种方案bior3.7〖〗0.115 4〖〗9.634 2〖〗7.083 5〖〗55.012 2〖〗20.065 0〖〗122.672 8〖〗46.577 6第二种方案bior3.7〖〗0.096 6〖〗12.760 2〖〗7.093 3〖〗29.877 5〖〗25.367 3〖〗122.677 5〖〗47.175 3第一种方案db2〖〗0.110 5〖〗9.574 5〖〗7.064 6〖〗57.769 7〖〗19.640 2〖〗122.745 6〖〗46.097 7第二种方案db2〖〗0.089 4〖〗12.486 6〖〗7.081 3〖〗33.347 5〖〗24.413 0〖〗122.752 5〖〗46.759 3图2〖〗第一种方案bior3.7〖〗0.027 9〖〗10.519 1〖〗7.091 3〖〗73.496 4〖〗16.860 1〖〗97.467 8〖〗44.344 1第二种方案bior3.7〖〗0.028 6〖〗13.985 7〖〗7.110 2〖〗29.685 4〖〗24.765 8〖〗97.266 8〖〗44.843 7第一种方案db2〖〗0.031 5〖〗10.620 3〖〗7.094 2〖〗73.618 3〖〗16.845 7〖〗97.419 0〖〗44.075 8第二种方案db2〖〗0.025 8〖〗13.804 3〖〗7.103 1〖〗29.845 2〖〗24.687 9〖〗97.138 4〖〗44.582 3［3］晁锐,张科,李言俊.一种基于小波变换的图像融合算法［J］.电子学报,2004,32(5):750753.
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A Wavelet Transform Image Fusion Algorithm Based on Related Coefficients

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