How to reset the current axes to display either color or grayscale image on the same axes in MATLAB?

Hi,

I have some grayscale images, which after some segmentation I converted a section to color for display purposes. But I cannot display a color image on the axes after I display a grayscale image on the same axes.

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)
global imB
global imF
global finalSegment_LE
i=38;
%         imB = img2{i} ;% Background original image
tempSeg = finalSegment_LE{i};
tempSeg(finalSegment_LE{i} ==0) = min(finalSegment_LE{i}(:));
imF = tempSeg;
cla(handles.axes1,'reset');
[~,~] = imoverlay(imB,imF,[],[],'hsv',0.8,handles.axes1); % color image..

% --- 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)
% global imB
temp = imread('cameraman.tif');
cla(handles.axes1,'reset');
axes(handles.axes1);
imshow(temp,[]) % grayscale image...
If I press pushbutton1 first I see a color image, but after I press pushbutton2, the axes become grayscale and even when I press the pushbutton1, It still displays a grayscale image instead of the color image.

Thanks,

Gopi

Answer 1

[Gopichandh Danala]

I figured out the solution, we can set colormap and then imshow to display respective images..

   % --- Executes on button press in pushbutton1.
    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)
    [img,cmap] = imread('peppers.png');
    cla(handles.axes1,'reset');
    colormap(handles.axes1,cmap);
    axes(handles.axes1);
    imshow(img,[]);

    % --- 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)
    % global imB
    temp = imread('cameraman.tif');
    cla(handles.axes1,'reset');
    colormap(handles.axes1,gray);
    axes(handles.axes1);
    imshow(temp,[])