Matlab图像增强实例源代码

 图像增强程序举例

灰度变换增强程序：

% GRAY TRANSFORM

clc;

I=imread('pout.tif');

imshow(I);

J=imadjust(I,[0.3 0.7],[0 1],1);--%transforms the walues in the %intensity image I to

values in J by linealy mapping values

imshow(J);

J=imadjust(I,[0.3 0.7],[0 1],1.5);--% if GAMMA is greater than

% 1,the mapping si weighted toward lower (darker) output values.

figure;

imshow(J)

J=imadjust(I,[0.3 0.7],[0 1],1);--% If TOP<BOTTOM,the output

% image is reversed,as in a photographic negative.

figure;

imshow(J);

直方图灰度变换

% &&'$

$()(()*()(()

+,*&

$平方根灰度变换函数

&'$

+&&'$++取得二维数组最大值

-*&'$.+&把数据类型转换成 &'$然后进行平方根变

换

* 函数不支持 &/ 类型

-&/-0+&把数据类型转换成 &/ 类型

I=imread('tire.tif');

% reads the image in tire.tif into I

imshow(I);

% displays the intensity image I with 256 gray levels

figure;

%creates a new figure window

imhist(I);

% displays a histogram for the intensity image I

J=histeq(I,64);

% transforms the intensity image I,returning J an intensity

%transforms the intensity image ,returning in % J an intensity

figure;

%image with 32 discrete levels

imshow(J);

figure;

imhist(J);

2直方图规定化程序举例

% HISTGRAM REGULIZATION

clc;

%Clear command window