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Sensors 2016, 16(6), 861; doi:10.3390/s16060861

Wavelet-Based Visible and Infrared Image Fusion: A Comparative Study

1
Facultad de Ingeniería en Electricidad y Computación, CIDIS, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo, Km 30.5 vía Perimetral, Guayaquil 09-01-5863, Ecuador
2
Computer Vision Center, Edifici O, Campus UAB, Bellaterra 08193, Barcelona, Spain
3
Computer Science Department, Universitat Autònoma de Barcelona, Campus UAB, Bellaterra 08193, Barcelona, Spain
4
Institute for Systems and Computer Engineering, Technology and Science, R. Dr. Roberto Frias 465, Porto 4200, Portugal
5
Institute of Electronics and Informatics Engineering of Aveiro, Campus Universitário de Santiago 3810-193 Aveiro, Portugal
*
Author to whom correspondence should be addressed.
Academic Editors: Vincenzo Spagnolo and Dragan Indjin
Received: 25 January 2016 / Revised: 13 May 2016 / Accepted: 1 June 2016 / Published: 10 June 2016
(This article belongs to the Special Issue Infrared and THz Sensing and Imaging)
View Full-Text   |   Download PDF [33297 KB, uploaded 15 June 2016]   |  

Abstract

This paper evaluates different wavelet-based cross-spectral image fusion strategies adopted to merge visible and infrared images. The objective is to find the best setup independently of the evaluation metric used to measure the performance. Quantitative performance results are obtained with state of the art approaches together with adaptations proposed in the current work. The options evaluated in the current work result from the combination of different setups in the wavelet image decomposition stage together with different fusion strategies for the final merging stage that generates the resulting representation. Most of the approaches evaluate results according to the application for which they are intended for. Sometimes a human observer is selected to judge the quality of the obtained results. In the current work, quantitative values are considered in order to find correlations between setups and performance of obtained results; these correlations can be used to define a criteria for selecting the best fusion strategy for a given pair of cross-spectral images. The whole procedure is evaluated with a large set of correctly registered visible and infrared image pairs, including both Near InfraRed (NIR) and Long Wave InfraRed (LWIR). View Full-Text
Keywords: image fusion; fusion evaluation metrics; visible and infrared imaging; discrete wavelet transform image fusion; fusion evaluation metrics; visible and infrared imaging; discrete wavelet transform
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sappa, A.D.; Carvajal, J.A.; Aguilera, C.A.; Oliveira, M.; Romero, D.; Vintimilla, B.X. Wavelet-Based Visible and Infrared Image Fusion: A Comparative Study. Sensors 2016, 16, 861.

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