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Image Fusion

  • By: Yangrong Ling
  • In: Encyclopedia of Geography
  • Edited by: Barney Warf
  • Subject:General Geography, Earth & Environmental Science

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 ...

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