zaosheng1.m

均值滤波,加权滤波,中值滤波的MATLAB实例,用于图象及信号的处理

picture=imread('Fig3.15(a)2.jpg');
imshow(picture);
[c,r,P] = impixel(picture);
%四个点的横纵坐标
 c1=c
 r1=r
 %确定所选区域的范围
 r2=abs(r1(4)-r1(1));
 c2=abs(c1(2)-c1(1));
a=zeros(r2,c2);
for i=1:abs(r1(4)-r1(1))
    for j=1:abs(c1(2)-c1(1))
        a(i,j)=picture(i+r1(1),j+c1(1));
    end
end
a=uint8(a);
imshow(a);
%[count,x]=imhist(a);
%y=count/(r2*c2);
%stem(x,y,'.');