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Multi-focus Color Image Fusion Scheme Using NSST and Focus Region Detection

Published: 16 March 2018 Publication History

Abstract

Aimed at low contrast, color distortion, loss of edge details and discontinuous phenomenon at border of focused region problems in the existing color image fusion methods, this paper proposes a novel color image fusion scheme by using nonsubsampled shearlet transform (NSST) and k nearest neighbors (KNN) matting which preserve the fine edge of the decision map fully. Firstly, the primitive fusion image is obtained by NSST. Secondly, the structural similarity maps are drawn according to the structural similarity relationship between the source images and the primitive fusion image, and then utilizing the mathematical morphology operation to detect the focus and defocus region and the unknown region, which can build an accurate trimap, so the final fine decision map is obtained by using KNN matting. Finally reconstruct the image based on the color combination equation. Experimental results indicate that the proposed scheme performs well and has superiorities over other existing typical and state of art ones in both subjective visual performance and objective criteria to a certain extent.

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  1. Multi-focus Color Image Fusion Scheme Using NSST and Focus Region Detection

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    ICMIP '18: Proceedings of the 3rd International Conference on Multimedia and Image Processing
    March 2018
    125 pages
    ISBN:9781450364683
    DOI:10.1145/3195588
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    • Wuhan Univ.: Wuhan University, China
    • University of Electronic Science and Technology of China: University of Electronic Science and Technology of China

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    Published: 16 March 2018

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    Author Tags

    1. Image fusion
    2. KNN matting
    3. morphology
    4. nonsubsampled shearlet transform

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