how do I get binary data image with the save button on the guide?

I am segmenting and saving images that have been segmented. The image was successfully saved with jpg type but I don't know how to save binary data from a segmented image.

is there a solution for this?

global frame
[name_file_save, path_save]=uiputfile ({'*.jpg','JPEG Image (*.jpg)';},'save citra');
if isequal(name_file_save,0) || isequal(path_save,0)
msgbox('Image is saved', 'Foto_Editor')
else
F=getframe(handles.axes2);
img=frame2im(F);
imwrite(img, fullfile(path_save,nama_file_save),'jpg');
end
axes(handles.axes2)

[Walter Roberson]

Saving segmentation information as .jpg is not a good idea. .jpg blurs sharp lines, and segmentation information is all sharp lines.

Answer 1

[Image Analyst]

You don't need to use getframe(). That just saves a screenshot which will not even be the same size as the image you're hoping to save.

A segmented image is a binary / logical variable. You can save it with imwrite() if you cast to uint8. You might want to scale to 255 also.

% Make a uint8 image with values of 0 and 255 (so we can see it in the File Explorer thumbnail).
uint8Image = 255 * uint8(binaryImage); % binaryImage is your segmented image.
% Get base file name.  Discard any extension they may have entered, like jpg.
[f, baseFileNameNoExt, ext] = fileparts(name_file_save); 
% Construct full file name.
fullFileName = fullfile(path_save, [baseFileNameNoExt, '.png']); % NEVER use jpg for image analysis.  Use PNG.
% Now do the actual save of the segmented image to disk as a PNG format image.
imwrite(uint8Image, fullFileName);  % Save PNG image.

[Walter Roberson]

You do not need to typecast or scale the logical() values: imwrite() will accept them directly, and will write as binary for BMP, PNG, and TIFF, and will take care of type conversion for the other file types.

[olivio gusmao]

thank you .

how do we search for binary image data after segmenting without having to save the image in jpg or png ?

% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
citra = handles.image;
citraGray = rgb2gray(citra);
axes(handles.axes3);
imshow(citraGray);


% --- Executes on button press in pushbutton6.
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)
axes (handles.axes1)
cla reset
set (gca,'XTick',[])
set (gca,'YTick',[])
axes (handles.axes2)
cla reset
set (gca,'XTick',[])
set (gca,'YTick',[])
axes (handles.axes3)
cla reset
set (gca,'XTick', [])
set (gca,'YTick', [])
%set (handles.pushbutton1,'Enable','off')
%set (handles.pushbutton5,'Enable','off')
%set (handles.btn_sobel,'Enable','off')

[Image Analyst]

Yes, you're right. Just to verify I made this code

binaryImage = logical(randi([0, 1], 20, 20));
imshow(binaryImage, 'InitialMagnification', 200);

% Save the logical image with no scaling or conversion.
imwrite(binaryImage, 'b.png');  % Save PNG image.
bRecalled = imread('b.png') % Will be of type logical and values of false and true.

% Make a uint8 image with values of 0 and 255.
uint8Image = 255 * uint8(binaryImage); % binaryImage is your segmented image.
% Now do the actual save of the segmented image to disk as a PNG format image.
imwrite(uint8Image, 'b255.png');  % Save PNG image.
b255Recalled = imread('b255.png') % Will be of type uint8 and values of 0 and 255.

and I verified that the thumbnails/icons look the same no matter if the range is 0-1 logical or 0&255 uint8. Also with the logical array, when it's recalled, it stays logical as you'd want. So there is no need to cast it to 255 uint8 like I did. Thanks for the clarification.

[Walter Roberson]

how do we search for binary image data after segmenting without having to save the image in jpg or png ?

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F

[olivio gusmao]

how do we get binary data numbers only 0 and 1 from image data. what code should be added to that code?

[Walter Roberson]

data_that_is_0_and_1s = double(binaryImage);

[Image Analyst]

binaryImage = imbinarize(grayScaleImage);