myfunc.m

子块DCT变换编码/帧内预测编码DPCM

% 主函数
clear,close all;
h1=figure;
h2=uicontrol(h1,'style','text','unit','normalized','horizontal','left',...
    'position',[0.77,0.025,0.22,0.95],'back',[0.5,0.5,0.5]);% 生成控制区域框
h3=uicontrol(h1,'style','text','unit','normalized','horizontal','left',...% 生成选择图象的提示框
    'position',[0.775,0.725,0.2,0.08],'back',[0.5,0.5,0.5],...
    'string','Select an Image:','fontsize',9);
h4=uicontrol(h1,'style','popup','unit','normalized','horizontal','center',...% 生成选择图象弹出框
    'position',[0.775,0.65,0.2,0.10],...
    'string','usc256.bmp|gs256.bmp','fontsize',9,'callback','readimage(h4)');
h5=uicontrol(h1,'style','pushbutton','unit','normalized','horizontal','left',...% 生成实现滤波的按键
    'position',[0.78,0.3,0.2,0.07],'back',[0.8,0.8,0.8],...
    'string','Apply','fontsize',9,'call','app(h4)');
 
oldbuf=imread('usc256.bmp');% 输入图象到oldbuf
% m=imnoise(oldbuf,'gaussian');% 加入高斯噪声
% i=double(m);% 把图象转换为双精度的
%i=double(oldbuf);
%set(h5,'callback','App(h4)');   % 显式的说明对于句柄h5中Apply按钮对应的函数对应的参数为h4中的变量。
% 如果不用此句显式的说明，则在定义h5句柄的时候，就要在app()中填写正确的参数h4。如果随便填写，如h1，则运行会出错。
subplot(2,2,1),imshow(oldbuf),title('original image');