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一、用平滑直方图修改技术进行图象增强本方法是以特定方式修改已给定图象直方图的办法来增强图象.直方图修改实质上是建立一种图象数据变换(查找表),经变换后的各波段的直方图与参考直方图相匹配.该技术已广泛应用于图象增强与正规化.如,本方法可用于精处理来消除陆地卫星6个传感器间的残余差(或称“去条带”),以及在一幅图象的子区上精确地作一般定标改正.在多时相分析和镶嵌之前,也可用它来校正两景象间因大气和辐射变化所造成的影响.
First, the use of smoothing histogram modification techniques for image enhancement This method is to modify a given way to enhance the image histogram given histogram modification is essentially the establishment of an image data transform (look-up table) , The transformed histograms of the bands match the reference histogram, and the technique has been used extensively for image enhancement and normalization, eg, the method can be used for fine processing to eliminate the residual difference between the 6 sensors of a terrestrial satellite Or “stripe”), as well as a precise calibration of the general calibration in a sub-region of an image, which can also be used to correct for changes in the atmosphere and radiation before the multi-phase analysis and mosaic Impact.