The Problem of the Ihs Method Which Exists in the Quick-bird Image Fusion and the Improvement of It

Against the Spectrum distortion problem of the IHS method which exists in the Quick-Bird data fusion, the paper proposes visualpan band method and Linear weighted matching two methods to improve it, provides the best value scope of the α in the VisualPan band method as well as the best weighted values of pan and I when the spatial characteristic and the spectrum characteristic of the linear weighted matching fusion image achieves the best result. The result shows that: when the value of α is between 0.2 and 0.25 can obtains satisfying fusion effect; when the weighted values of pan and I are 0.75 and 0.25, the spatial characteristic and the spectrum characteristic of fusion image can achieve the best result.