中值滤波均值快速算法在高光谱图像处理系统中的应用

文章提出了一种中值滤波均值快速算法，介绍了该算法的设计思路、算法流程、基本运算步骤、实验设计与效果及与经典算法的比较情况。该算法利用数据窗口中的位置关系并考虑了相邻的两个中值滤波窗口内信号数据的相关性，在运算过程中，保留前面窗口内数据的排序信息，作为下一个窗口内数据排序的参考依据。这样可将传统算法中相邻的两次中值滤波运算合并为一次进行，减少了中值滤波过程中比较运算的次数，该算法可将传统算法的复杂度O(n^2)简化成O(n)，同时将均值滤波与中值滤波有机结合起来，将两个独立的算法有机地融合成一种算法，从而有效提高运算速度，也减少噪声对图像的影响。

An Algorithm of Medium and Mean Filter in Hyperspectra Image Processing System

This thesis is to introduce a new arithmetic design and workflow,algorithmic analysis, a basic calculation procedure of a new algorithmic and the effect of this arithmetic and compare these with that of the traditional arithmetic. This arithmetic utilizes the positional relation in data windows and take a position relationship and a correlation between two neighbor data windows into account. In the operational process, this arithmetic reserves the tactic order information of previous data window as the referential foundation of the next window for sorting order. Thus two contiguous medium filter in traditional arithmetic can be combined as one and the frequency of the comparative operation in medium filtering decreased. This arithmetic is able to simplify the complex degree of traditional arithmetic and combine mean filter with medium filter, syncretize these two independent arithmetic into one to speed up the operation effectively and reduce the influence of noise on image.