Image Fusion

Image fusion is a technique to combine multi-source images such as a high-spatial-resolution panchromatic or radar image and a lower-spatial-resolution multispectral image to produce a high-spatial-resolution multispectral image. Ideally, the fused image inherits high-resolution spatial information from the panchromatic or radar image and preserves the original spectral characteristics of the multispectral image. Most Earth observation satellite systems provide two types of image data: a panchromatic image with high spatial resolution and a multispectral image with lower spatial resolution but higher spectral resolution. To effectively use such images, image fusion techniques can be employed to combine the highresolution panchromatic and low-resolution multispectral images into one color image. Such techniques can extend the application potential of remote-sensing image data.

A variety of methods for fusing panchromatic images of ...