Question

matlab gui问题 我知道如何读取图片，却不知道怎么对读取的这个图片进行处理，不知道图片是如何传递的

比如我想在按钮2中对刚才读取的图片进行处理，该怎么做啊
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)
[fname, pname, index] = uigetfile({'*.jpg'; '*.bmp'}, '选择图片');%读取图片

str3 = [pname fname];
axes(handles.axes1);
imshow(str3);

% --- 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)

Answer 1

可以这样做：
function pushbutton1_Callback(hObject, eventdata, handles)
[fname, pname, index] = uigetfile({'*.jpg'; '*.bmp'}, '选择图片');%读取图片
str3 = [pname fname];
axes(handles.axes1);
imshow(str3);
handles.img = str3 %将图片赋值于句柄
guidata(hObject, handles);%更新句柄

function pushbutton2_Callback(hObject, eventdata, handles)
img1 = handles.img; %将图片赋给img1，就可以对img1进行操作了

追问

我试了一下，但还是提示出错了
function pushbutton2_Callback(hObject, eventdata, handles)

img1 = handles.img; %将图片赋给img1，就可以对img1进行操作了
axes(handles.axes2);