function pushbutton1_Callback(hObject, eventdata, handles) % hObject handle to pushbutton1 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % --- Executes on button press in pushbutton2. function pushbutton2_Callback(hObject, eventdata, handles) % hObject handle to pushbutton2 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA)
时间: 2024-04-16 15:30:01 浏览: 80
这是一个 MATLAB GUI 中的两个按钮的回调函数。第一个按钮的回调函数是 `pushbutton1_Callback`,第二个按钮的回调函数是 `pushbutton2_Callback`。这些函数会在用户按下相应的按钮时被调用执行。在这段代码中,我们可以看到这些回调函数中没有任何具体的操作代码,因此在这里没有任何实际的功能被执行。你可以根据需要在这些回调函数中添加适当的代码来实现你想要的功能。
相关问题
%高斯噪声 % --- Executes on button press in pushbutton12. function pushbutton12_Callback(hObject, eventdata, handles) % hObject handle to pushbutton12 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global bw_invert noisy = imnoise(bw_invert, 'gaussian', 0, 0.01); axes(handles.axes2); cla; imshow(noisy); guidata(hObject,handles);
这段MATLAB代码实现了一个名为"高斯噪声"的按钮的回调函数。当用户点击这个按钮时,它会将全局变量bw_invert所对应的二值图像添加高斯噪声,并在GUI界面上的axes2中显示噪声图像。
imnoise函数的第一个参数bw_invert是输入的二值图像,'gaussian'表示添加高斯噪声,0表示噪声的均值,0.01表示噪声的方差。最后使用imshow函数在axes2中显示添加噪声后的图像。
这段代码中使用了MATLAB的全局变量,因此需要在其他地方定义和初始化bw_invert变量。例如:
```matlab
global bw_invert;
bw = imread('binary_image.bmp');
bw_invert = imcomplement(im2bw(bw));
```
这段代码中,我们首先读取一个二值图像,然后使用imcomplement函数进行二值图像的反转,再使用im2bw函数将图像转换为二值图像,并将其赋值给全局变量bw_invert。这样,在高斯噪声按钮的回调函数中就可以直接使用bw_invert变量了。
function pushbutton6_Callback(hObject, eventdata, handles) % hObject handle to pushbutton6 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) in=handles.org; a1=handles.edit2; b1=handles.edit3; a=str2double(min(in(:))); b=str2double(max(in(:))); J = a1+(b1-a1)/(b-a)*(a1-a); imshow(J); handles.obj=J; guidata(hObject,handles);function edit2_Callback(hObject, eventdata, handles) % hObject handle to edit2 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) % Hints: get(hObject,'String') returns contents of edit2 as text % str2double(get(hObject,'String')) returns contents of edit2 as a double handles.mR=str2double(get(hObject,'String')); guidata(hObject,handles);这段代码有什么错误
在这段代码中,第一段函数 `pushbutton6_Callback` 和第二段函数 `edit2_Callback` 之间需要有一个空行或者注释行,否则 MATLAB 会将它们视为一个函数,导致出现以下错误:
```
错误使用 str2double
输入参数必须是字符向量、字符串标量或者字符串数组。
出错 pushbutton6_Callback (line 9)
a=str2double(min(in(:)));
```
此外,第一段函数中的 `a1` 和 `b1` 变量没有通过 `str2double` 函数转换为数值类型,导致后续计算出错。正确的代码应该为:
```
function pushbutton6_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton6 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
in = handles.org;
a1 = str2double(handles.edit2.String);
b1 = str2double(handles.edit3.String);
a = str2double(min(in(:)));
b = str2double(max(in(:)));
J = a1 + (b1-a1)/(b-a)*(in-a);
imshow(J);
handles.obj = J;
guidata(hObject,handles);
function edit2_Callback(hObject, eventdata, handles)
% hObject handle to edit2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
handles.mR = str2double(get(hObject,'String'));
guidata(hObject,handles);
```
请注意,`a1` 和 `b1` 变量的获取方式也有所改变,使用了 `handles.edit2.String` 和 `handles.edit3.String`,这是因为 `handles.edit2` 和 `handles.edit3` 都是 `matlab.ui.control.UIControl` 类型的对象,不能直接进行数值计算。
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