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在图象处理中，若将信号直接以ｆ（ｘ）＝ｘα为映射形式是十分不便的。本文给出了两种有理分式函数的映射模型，在实际应用中收到了较好的效果。
In image processing, it is very inconvenient if the signal is directly mapped with f (x) = xα. In this paper, we present two kinds of mapping models of rational fractional functions, which have received good results in practical application.