arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.13538cs.CVeess.IV
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用于医学图像融合的双树复小波变换自适应优化新方法

A Novel adaptive optimization of Dual-Tree Complex Wavelet Transform for Medical Image Fusion

RVS College of Engineering and Technology(RVS工程技术学院)

T. Deepika, G. Karpaga Kannan

摘要:

近年来,医学图像融合领域取得了许多研究成果.融合基本上是提取最好的输入并将其传递到输出。医学图像融合是指将多种不同模态的图像信息融合在一起,形成一幅图像来表达其信息。图像融合的目的是综合互补信息和冗余信息。提出了一种基于双树复小波变换(DT-CWT)和自适应粒子群优化(APSO)的多模态图像融合算法。通过使用来自源图像的分解金字塔的DTCWT系数形成融合金字塔来实现融合。采用基于像素的加权平均法对系数进行融合,并利用自适应粒子群优化算法估计权值,得到最优融合图像。融合图像通过传统的逆双树复小波变换重构过程得到。实验结果表明,基于自适应粒子群优化算法的方法明显优于基于粒子群优化算法的方法。将得到的融合图像进行视觉比较,并通过诸如熵(E)、峰值信噪比(PSNR)、均方根误差(RMSE)、标准差(SD)和结构相似性指数度量(SSIM)计算的基准进行比较。

英文摘要:

In recent years, many research achievements are made in the medical image fusion field. Fusion is basically extraction of best of inputs and conveying it to the output. Medical Image fusion means that several of various modality image information is comprehended together to form one image to express its information. The aim of image fusion is to integrate complementary and redundant information. In this paper, a multimodal image fusion algorithm based on the dual-tree complex wavelet transform (DT-CWT) and adaptive particle swarm optimization (APSO) is proposed. Fusion is achieved through the formation of a fused pyramid using the DTCWT coefficients from the decomposed pyramids of the source images. The coefficients are fused by the weighted average method based on pixels, and the weights are estimated by the APSO to gain optimal fused images. The fused image is obtained through conventional inverse dual-tree complex wavelet transform reconstruction process. Experiment results show that the proposed method based on adaptive particle swarm optimization algorithm is remarkably better than the method based on particle swarm optimization. The resulting fused images are compared visually and through benchmarks such as Entropy (E), Peak Signal to Noise Ratio, (PSNR), Root Mean Square Error (RMSE), Standard deviation (SD) and Structure Similarity Index Metric (SSIM) computations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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