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

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olivio gusmao 2020-5-17

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https://ww2.mathworks.cn/matlabcentral/answers/526033-how-do-i-get-binary-data-image-with-the-save-button-on-the-guide

评论： Image Analyst 2020-5-20

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)

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Walter Roberson 2020-5-17

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

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Answer 1

Image Analyst 2020-5-17

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/526033-how-do-i-get-binary-data-image-with-the-save-button-on-the-guide#answer_432892

编辑：Image Analyst 2020-5-17

在 MATLAB Online 中打开

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.

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olivio gusmao 2020-5-17

编辑：Walter Roberson 2020-5-17

在 MATLAB Online 中打开

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')

Walter Roberson 2020-5-20

在 MATLAB Online 中打开

data_that_is_0_and_1s = double(binaryImage);

Image Analyst 2020-5-20

在 MATLAB Online 中打开

binaryImage = imbinarize(grayScaleImage);

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

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

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