Proceedings of SPIE - the International Society for Optical Engineering
We combined images from different sensors that were enhanced by multiscale products of the wavelet coefficients. Using the wavelet transform, we used a multiresolution analysis to form products of coefficients across scales. Then, a fusion rule was applied to the product images to determine how the original images could be combined. Using this approach, we were able to decrease the sensitivity of the fusion process to noise.
Ostrem, T., & Kozaitis, S. P. (2005). Product-based multiresolution image fusion. Paper presented at the Proceedings of SPIE - the International Society for Optical Engineering, 5813 173-179. doi:10.1117/12.603901