NDLI: NSCT-based fusion method for forward-looking sonar image mosaic

Content Provider	IET Digital Library
Author	Zhang, Jian Sohel, Ferdous Bennamoun, Mohammed Bian, Hongyu An, Senjian
Abstract	To generate a seamless mosaic of a forward-looking sonar (FLS) video sequence, this study proposes a novel fusion method for FLS image mosaic, which includes two main steps from coarse to fine. In the coarse fusion step, the source images are first decomposed into multi-scale sub-bands using the non-subsampled contourlet transform (NSCT), then the sub-bands of the source images are merged, based on the Gabor energy and the local contrast for low and high frequency sub-bands, respectively, to generate the fused sub-bands which are used to produce the fused image by inverse NSCT. In the fine fusion step, a decision map is used to choose the pixels of the fine fused image from the coarsely fused image or one of the source images. This decision map is first constructed by measuring the similarity of the coarsely fused image to the source images, and then processed by a morphological post-processing technique to ensure its continuity and smoothness. Extensive experiments on FLS image fusion and mosaic have been conducted to demonstrate the effectiveness and the superiority of the proposed technique using both a subjective evaluation and objective metrics.
Starting Page	1512
Ending Page	1522
Page Count	11
ISSN	17518784
Volume Number	11
e-ISSN	17518792
Issue Number	Issue 10, Oct (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/11/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2017.0053
Journal	IET Radar, Sonar & Navigation
Publisher Date	2017-06-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Coarse Fusion Step Decision Map Fine Fused Image Pixel FLS Video Sequence Forward-looking Sonar Image Mosaic Fusion Method Gabor Energy Image Fusion Image Processing Technique Image Segmentation Image Sequence Integral Transforms Inverse NSCT Inverse Transforms Morphological Post-processing Technique Multiscale Sub-Band Nonsubsampled Contourlet Transform Optical, Image And Video Signal Processing Sonar And Acoustic Radar Sonar Imaging Source Image Decomposition
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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