An almost automatic image fusion scheme for balancing clarity and visual effects

An almost automatic image fusion scheme for balancing clarity and visual effects Multi-focus image fusion aims to combine multiple images with different focuses to form a single sharp image. The basic principle is to first compare the local content information of every block or pixel from distinct input images, and then choose the largest contrast among them because the maximum is generally viewed as the clearest. However, this is usually impossible unless a perfect sharpness measure is adopted. For some cases, especially with smooth and plain areas on images, a higher value of sharpness measurement does not always come from a more focused region and thus a wrong selection of a block or pixel is prone to bring about blocking effects. In addition, how to select the optimal block size suitable for all sorts of images is another relatively important issue, but so far no existing method has provided the skill. On the other hand, modern techniques tend to obtain an effective algorithm by some complicated procedures, thereby increasing computational time and being difficult to implement. In order to effectively overcome potential blocking effects and provide a simple as well as easily extended approach, an almost automatic image fusion scheme for balancing clarity and visual effects, a combination of a sharpness measure and the occurrence rate of the maximum sharpness for each pixel lying in different block sizes, is proposed. Through the proposed scheme, three regions are naturally obtained: the focus region, the transition region and the blur region. Experimental results confirm that the proposed scheme does efficiently achieve much satisfactory visual quality. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Multimedia Tools and Applications Springer Journals

An almost automatic image fusion scheme for balancing clarity and visual effects

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Publisher
Springer US
Copyright
Copyright © 2017 by Springer Science+Business Media New York
Subject
Computer Science; Multimedia Information Systems; Computer Communication Networks; Data Structures, Cryptology and Information Theory; Special Purpose and Application-Based Systems
ISSN
1380-7501
eISSN
1573-7721
D.O.I.
10.1007/s11042-017-4588-y
Publisher site
See Article on Publisher Site

Abstract

Multi-focus image fusion aims to combine multiple images with different focuses to form a single sharp image. The basic principle is to first compare the local content information of every block or pixel from distinct input images, and then choose the largest contrast among them because the maximum is generally viewed as the clearest. However, this is usually impossible unless a perfect sharpness measure is adopted. For some cases, especially with smooth and plain areas on images, a higher value of sharpness measurement does not always come from a more focused region and thus a wrong selection of a block or pixel is prone to bring about blocking effects. In addition, how to select the optimal block size suitable for all sorts of images is another relatively important issue, but so far no existing method has provided the skill. On the other hand, modern techniques tend to obtain an effective algorithm by some complicated procedures, thereby increasing computational time and being difficult to implement. In order to effectively overcome potential blocking effects and provide a simple as well as easily extended approach, an almost automatic image fusion scheme for balancing clarity and visual effects, a combination of a sharpness measure and the occurrence rate of the maximum sharpness for each pixel lying in different block sizes, is proposed. Through the proposed scheme, three regions are naturally obtained: the focus region, the transition region and the blur region. Experimental results confirm that the proposed scheme does efficiently achieve much satisfactory visual quality.

Journal

Multimedia Tools and ApplicationsSpringer Journals

Published: Apr 13, 2017

References

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