Publication de 6 numéros par an
ISSN Imprimer: 1543-1649
ISSN En ligne: 1940-4352
Indexed in
Energy-Based Fusion Scheme for Surveillance and Navigation
RÉSUMÉ
Image fusion is used to integrate multiple images into a composite image which contains complementary information from each of the source images. In defense applications, fusion is widely employed to obtain images pertaining to the object under surveillance and also for mapping terrain for navigation purposes. Although there are a many fusion algorithms reported in the literature, the need is for a computationally efficient fusion rule that can be implemented easily in hardware. Driven by this motivation we have formulated a discrete wavelet transform{based fusion technique that uses the energy of the wavelet coefficients to determine the fusion weights for the approximate image and choose maximum intensity rule for the detail image. Surveillance imaging generally uses two imaging sources, one an infrared camera and the other a conventional digital camera, and the images are usually captured under low lighting and night-time conditions. We used the structural similarity index, mutual information, and standard deviation as metrics to evaluate the performance of our fusion scheme with existing algorithms. Our experiments have shown that the algorithm developed produces good results under the constraints imposed by this application.
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