Spatial domain image fusion using adaptive cross filtering

Snehal Sakharam Sanap , Lohiya Govindkumar Balkisan

Abstract We present an algorithm for multifocus image fusion in spatial domain using adaptive cross filtering. The basic idea is to extract the edge information from the source images and then segment the source images into blocks using the soft blending technique instead of splitting them in to simple fixed size blocks. The differences between the average edge information from both the source images is computed and the mean of these differences is set as the threshold. Only those blocks for which the difference exceeds the threshold are chosen and incorporated into the final fused image. A further enhancement is achieved by making this process iterative. In every next iteration, the image is divided adaptively such that each block is subdivided in four parts to the divisions used in the last iteration. Also the number of iterations is varied as per size of image. The performance of this method has been tested on many pairs of multifocus images shows improved results when in comparison with existing methods. Keywords: Image fusion, Multifocus images, Spatial domain, Edge extraction, Cross filtering

Title:	Spatial domain image fusion using adaptive cross filtering
Author Name:	Snehal Sakharam Sanap , Lohiya Govindkumar Balkisan
Abstract:	Abstract We present an algorithm for multifocus image fusion in spatial domain using adaptive cross filtering. The basic idea is to extract the edge information from the source images and then segment the source images into blocks using the soft blending technique instead of splitting them in to simple fixed size blocks. The differences between the average edge information from both the source images is computed and the mean of these differences is set as the threshold. Only those blocks for which the difference exceeds the threshold are chosen and incorporated into the final fused image. A further enhancement is achieved by making this process iterative. In every next iteration, the image is divided adaptively such that each block is subdivided in four parts to the divisions used in the last iteration. Also the number of iterations is varied as per size of image. The performance of this method has been tested on many pairs of multifocus images shows improved results when in comparison with existing methods. Keywords: Image fusion, Multifocus images, Spatial domain, Edge extraction, Cross filtering
Cite this article:	Snehal Sakharam Sanap , Lohiya Govindkumar Balkisan , " Spatial domain image fusion using adaptive cross filtering " , International Journal of Emerging Trends & Technology in Computer Science (IJETTCS), Volume 4, Issue 5(1), September - October 2015 , pp. 009-011 , ISSN 2278-6856.
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