Color Processing Methods of Different Seasonal SPOT5 Images before Mosaic
不同季相SPOT5影像镶嵌前色调处理方法研究

With only few images for choice,how to mosaic images of different seasonal and produce good mosaic image is a very common technological problem.The main difficulty for this problem is how to minish the color difference between mosaicing images.In this paper,taking two SPOT5 satellite images of Xiamen city,with different seasonal,acquired in different year and with large color difference,as a case,we used several image processing methods,including rescale,raster fill,extraction of feature information and classification etc.to decrease the color difference of two kind ground features:patch one and irregular pieces one.The methods proposed in this paper make possible produce good mosaic images and they are very practical.