A three-dimensional median filtering method applied to a computerized tomographic image comprises the steps of: (A) reading a set of two-dimensional section computerized tomographic images which can be utilized to construct a three-dimensional image (B) calibrating all coordinate positions of noises in the set of two-dimensional section computerized tomographic images and (C) analyzing a distribution state of each noise in a two-dimensional section tomographic image and the adjacent two-dimensional section tomographic image where the noise is located (D) performing a filtering algorithm according to the distribution state of the noise to obtain a median image datum that is utilized to replace the noise and (E) processing the noise of the set of two-dimensional section computerized tomographic images to construct the three-dimensional image. In this way, the discontinuity occurred in the combination of the two-dimensional section tomographic images can be eliminated when the three-dimensional image is processed for stacking imagining.一種應用於電腦斷層影像之三維中值濾波方法,步驟包括(A)讀取一組可建構出三維影像的二維切面電腦斷層影像;(B)標定該組二維切面電腦斷層影像所有雜訊的座標位置;(C)分析每一點雜訊之其所在二維切面電腦斷層影像及相鄰的二維切面電腦斷層影像的分佈狀態;根據雜訊的分佈狀態進行一濾波演算法而得一中位值影像資料,並以該中位值影像資料取代雜訊;將該組二維切面電腦斷層影像的雜訊處理後,建構出三維影像。藉此,可消除三維影像堆疊成像時,二維切面電腦斷層影像組合的不連續。S101-S105‧‧‧步驟
