期刊
INFORMATION FUSION
卷 8, 期 2, 页码 119-130出版社
ELSEVIER
DOI: 10.1016/j.inffus.2005.09.006
关键词
image fusion; feature-based fusion; region-based fusion; segmentation; complex wavelets
A number of pixel-based image fusion algorithms (using averaging, contrast pyramids, the discrete wavelet transform and the dual-tree complex wavelet transform (DT-CWT) to perform fusion) are reviewed and compared with a novel region-based image fusion method which facilitates increased flexibility with the definition of a variety of fusion rules. A DT-CWT is used to segment the features of the input images, either jointly or separately, to produce a region map. Characteristics of each region are calculated and a region-based approach is used to fuse the images, region-by-region, in the wavelet domain. This method gives results comparable to the pixel-based fusion methods as shown using a number of metrics. Despite an increase in complexity, region-based methods have a number of advantages over pixel-based methods. These include: the ability to use more intelligent semantic fusion rules; and for regions with certain properties to be attenuated or accentuated. (C) 2005 Elsevier B.V. All rights reserved.
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