标签:read 而不是 不能 atl show size floor 图像 users
clc, clear, close all
img = rgb2gray(imread('/Users/jh/Wallpapers/2.jpg'));
imshow(img);
% 计算直方图
[m, n] = size(img);
s1 = zeros(1, 256);
for i = 1:m
for j = 1:n
s1(img(i, j) + 1) = s1(img(i, j) + 1) + 1; % 统计图像中0-255的个数
end
end
figure;
bar(0:255, s1); % 绘制直方图
bmap = zeros(1, 256);
for i = 1:256
temp = 0;
for j = 1:i
temp = temp + s1(j); % 计算累加
end
bmap(i) = floor(temp * 255 / (m * n)); % 累加和 / (m * n) * 255
end
y = zeros(m, n);
for i = 1:m
for j = 1:n
y(i, j) = bmap(img(i, j) + 1); % 将bmap的值对应的赋给y, y为最终的图
end
end
y = uint8(y); % 像素中不能有负数, 使用uint而不是int
figure;
imshow(y);
s1 = zeros(1, 256);
for i = 1:m
for j = 1:n
s1(y(i, j) + 1) = s1(result_imgf(i, j) + 1) + 1; % 计算均值化之后的直方图
end
end
figure;
bar(0:255, s1);
标签:read 而不是 不能 atl show size floor 图像 users
原文地址:https://www.cnblogs.com/megachen/p/10606623.html