Abstract: Methods, systems and computer program products are provided for fusing images of different spatial resolution. Data for at least two images at different spatial resolutions is obtained and relationships between the images at the different spatial resolutions are determined. A relationship between a first of the at least two images at a first spatial resolution and the first of the at least two images at a second spatial resolution, higher than the first spatial resolution is determined based on the determined relationships between the images at the different spatial resolutions. Pixel values of the first of the at least two images at the second spatial resolution are determined based on pixel values of the first of the at least two images at the first spatial resolution and the determined relationship between the first of the at least two images at the first spatial resolution and the first of the at least two images at the second spatial resolution.

Abstract: Methods, systems and computer program products are provided for fusing images having different spatial resolutions, for example, different spatial and/or spectral resolutions. Data for at least two images having different spatial resolutions is obtained. A component analysis transform is performed on a lower spatial resolution image of the at least two images. A component of the component analysis transform of the lower resolution image containing a small amount of information associated with the low spatial resolution image is replaced with information from a higher spatial resolution image of the at least two images.