对单个动态矩阵

Question

显示

G3.vardisp= uicontrol('Style','edit',...
           'Position', [520 280 30 30],...
           'String','0');    

滑块

G3.slide = uicontrol('style','slide',...
                 'unit','pix',...
                 'position',[400 280 120 30],...
                 'min',-10,'max',10,'val',1,...
                 'sliderstep',[1/20 1/10],...
                 'callback',{@sl_call3,G3});

Slider的回调

function [] = sl_call3(varargin)
 [l,G3] = varargin{[1,3]};  % calling handle and data structure.
 set(G3.vardisp,'String',get(l,'value'))
 vbrilho=get(l,'value')
 subplot('Position',[.35, 0.575, 0.375, 0.375])
 x4.head_mod=(vcontraste*x4.head)+(vbrilho*10);
 imshow(x4.head_mod)
end   

按钮

 filtro.medfiltbtn1 = uicontrol('Parent',hsp,...
                'Style', 'pushbutton',...
                'String', 'medfilt2_1',...
                'Position',[0 35 80 30],...
                'callback',{@teste,1}); 

按钮回调

function []= teste(varargin)

[t1] = varargin{[3]};
while t1==1
    subplot('Position',[.35, 0.575, 0.375, 0.375])
    x4.head_modf=imnoise(x4.head_mod,'gaussian',0,0.01);
    t1=0;
    imshow(x4.head_modf)
end

运行代码时，imnoise可以应用于x4.head_mod，但我无法在(vcontraste*x4.head)+(vbrilho*10)上应用等式imnoise。我想以某种方式嵌套两个结果。