The aim of this study is to seek out the most suitable image fusion algorithm for OLI image of Landsat 8 satellite acquired in June 9,2010,taking Yuyang country in Shaanxi Province as study area.Five kinds of image fusion algorithms have been employed,which are Brovey transform,High-pass filter transform,HIS transform,PCA transform and LBV-wavelet RF. The effectiveness of the five fusion algorithms has been evaluated based on spectral fidelity,high spatial frequency information gain,and supervised classific...