Matlab实现灰度图像的水平和垂直投影

clear all

clc

close all

%% 读入图像数据

I=imread('2.bmp');

% I=rgb2gray(I);

[m n]=size(I);

% 求垂直投影

for y=1:n

S(y)=sum(I(1:m,y));

end

y=1:n;

figure

subplot(211),plot(y,S(y));

title('垂直投影');

% 求水平投影

for x=1:m

S(x)=sum(I(x,:));

end

x=1:m;

subplot(212),plot(x,S(x));

title('水平投影');

网址：http://blog.csdn.net/yihaizhiyan/article/details/50319529