Question

MATLAB 中中位值平均滤波法（又称防脉冲干扰平均滤波法）怎么编写程序啊

Answer 1

写一个小函数，LZ调用它就可以了：
function fi = calc_avg(input,len)
% OUT = CALC_AVG(INPUT,LEN)
% calculate the average by each length LEN of the INPUT;
% INPUT is the input series or matrix need to be filtered;
% LEN is the average filter length, and LEN must be smaller than the input size;
% return OUT is the same size series or matrix of input.
[m,n] = size(input);
input = reshape(input,m*n,1);
if len>=m*n
error('the filter length is too large!');
return
else
input = [input;input(1:len-1)];
out = [];
for i=1:m*n
out(i) = mean(input(i:i+len-1));
end
fi = reshape(out,m,n);
end