Matlab之imadjust函数实例

Imadjust函数实例

一、基本语法

J = imadjust(I)

J = imadjust(I,[low_in; high_in],[low_out; high_out])

J = imadjust(...,gamma)

newmap = imadjust(map,[low_in high_in],[low_out high_out],gamma)

RGB2 = imadjust(RGB1,...)

二、功能解释

调整图象的像素值，可以改变对比度和颜色，调节灰度图像的亮度或彩色图像的颜色矩阵。

三、实例

1、

RGB1 = imread('flowers.tif');

RGB2 = imadjust(RGB1,[.2 .3 0; .6 .7 1],[]);

figure;

subplot(211);

imshow(RGB1);

title('原图');

subplot(212);

imshow(RGB2);

title('调整后图');

2、RGB1 = imread('flowers.tif');

RGB2 = imadjust(RGB1,[.1 .1 0; .6 .7 1],[]);

figure;

subplot(211);

imshow(RGB1);

title('原图');

subplot(212);

imshow(RGB2);

title('调整后图');

3、RGB1 = imread('flowers.tif');

RGB2 = imadjust(RGB1,[.1 .1 0; .4 .5 1],[]);

figure;

subplot(211);

imshow(RGB1);

title('原图');

subplot(212);

imshow(RGB2);

title('调整后图');

4、RGB1 = imread('flowers.tif');

RGB2 = imadjust(RGB1,[.1 .4 0; .6 .7 1],[]);

figure;

subplot(211);

imshow(RGB1);

title('原图');

subplot(212);

imshow(RGB2);

title('调整后图');